docs(plan): mark 9.1.2 as complete

Issue #6: getSelectColumns() produced count() for count(*)
and max() for max(id). Now uses exprToSql() on funcArgs
to generate consistent names matching the actual SQL expression.

Before: columns: @[count()], rows: @[{count(*): 2}]
After:  columns: @[count(*)], rows: @[{count(*): 2}]

.github/workflows/clients-ci.yml

@@ -80,8 +80,7 @@ jobs:
         working-directory: clients/python
         run: |
           python -m pip install --upgrade pip
-          pip install pytest
+          pip install -e ".[dev]"
-          pip install -e .
 
       - name: Run Python unit tests
         working-directory: clients/python

.gitignore

@@ -7,6 +7,9 @@ nimblecache/
 # Binaries (compiled test executables)
 tests/test_all
 tests/stress_test
+tests/test_lock
+tests/test_minimal
+tests/tla_faithfulness
 benchmarks/bench_all
 benchmarks/compare
 clients/nim/tests/test_client
@@ -37,4 +40,6 @@ clients/rust/target/
 # Nim compiled binaries
 clients/nim/src/baradb/client
 src/barabadb/storage/compaction
-docker-compose.test.yml
+src/barabadb/query/executor
+tests/join_tests
+*.tar.gz

BARADB_DEFICIENCIES.md

@@ -0,0 +1,231 @@
+# BaraDB Deficiencies Fixed During NimForum Migration
+
+This document summarizes the bugs and design deficiencies discovered in BaraDB while porting NimForum from SQLite to BaraDB's TCP wire protocol.
+
+---
+
+## 1. Comma Join Not Supported in Parser
+
+**Problem:** The BaraQL parser did not recognize comma-separated table lists in the `FROM` clause.
+
+```sql
+SELECT * FROM thread t, category c WHERE t.category = c.id
+```
+
+This would fail with "unknown tokens" after the first comma.
+
+**Root Cause:** `parseSelect()` only parsed a single table after `FROM` and ignored everything after a comma.
+
+**Fix:** Modified `database/src/barabadb/query/parser.nim` to loop over comma-separated tables and treat each additional table as an implicit `CROSS JOIN`.
+
+```nim
+while p.peek().kind == tkComma:
+  discard p.advance()
+  let nextTableTok = p.expect(tkIdent)
+  # ... build joinNode with jkCross and add to result.selJoins
+```
+
+---
+
+## 2. DEFAULT Constraints Not Evaluated at Schema Creation Time
+
+**Problem:** `CREATE TABLE` with `DEFAULT <expr>` stored the raw AST node instead of the evaluated string value. During `INSERT`, `applyDefaultValues()` checked `colDef.defaultVal.len > 0`, but `defaultVal` was empty because the AST was never evaluated to a string.
+
+**Result:** Explicitly omitted columns in `INSERT` raised `NOT NULL constraint violation` even when a `DEFAULT` was defined.
+
+**Fix:** Added `evalNodeToString()` in `database/src/barabadb/query/executor.nim` to evaluate `DEFAULT` AST nodes to their string representation during schema restoration.
+
+```nim
+proc evalNodeToString(node: Node): string =
+  let ir = lowerExpr(node)
+  return evalExpr(ir, initTable[string, string](), nil)
+```
+
+---
+
+## 3. Join Column Resolution Overwrites Duplicate Column Names
+
+**Problem:** `Row` is defined as `Table[string, string]`. When a query selects columns with identical names from joined tables:
+
+```sql
+SELECT t.id, c.id FROM thread t INNER JOIN category c ON t.category = c.id
+```
+
+The `Project` operator in `executePlan()` builds `newRow` as a `Table`. The second `id` overwrites the first, so both columns end up with the value from the right-hand table.
+
+**Result:** `t.id` returns `0` (category id) instead of `1` (thread id).
+
+**Fix:** Two changes in `database/src/barabadb/query/executor.nim`:
+
+1. `lowerSelect()` — for `nkPath` expressions, use the full path (`t.id`) as the alias instead of just the last segment (`id`).
+2. Added uniqueness logic for all aliases: if a duplicate alias is detected, append `_1`, `_2`, etc. This also fixes `strftime()` appearing multiple times in the same select list.
+
+```nim
+# Before
+projectPlan.projectAliases.add(e.pathParts[^1])        # -> "id"
+# After
+projectPlan.projectAliases.add(e.pathParts.join(".")) # -> "t.id"
+```
+
+---
+
+## 4. Empty Result Sets Do Not Send Column Metadata
+
+**Problem:** In `database/src/barabadb/core/server.nim`, the server only sent the `mkData` message when `result.rows.len > 0`:
+
+```nim
+if result.rows.len > 0:
+  let dataMsg = serializeResult(result, header.requestId)
+  await client.send(...)
+```
+
+For queries with zero matching rows (e.g. `WHERE id IN (SELECT ...)` with no subquery matches), the client received only `mkComplete` and no `mkData`.
+
+**Result:** The client saw `columns: @[]` and `rows: @[]`. When `getRow()` fell back to `newSeq[string](qr.columns.len)`, it returned an empty seq, causing "index out of bounds" errors when the application tried to access `row[0]`.
+
+**Fix:** Removed the `if result.rows.len > 0` guard. `serializeResult()` is now always sent, including the correct column names even when `rowCount = 0`.
+
+---
+
+## 5. GROUP BY Returns Empty Values for Non-Aggregated Columns
+
+**Problem:** Unlike SQLite, BaraDB does not automatically pick an arbitrary row value for columns that are neither in `GROUP BY` nor inside an aggregate function.
+
+```sql
+SELECT u.id, u.name, count(*)
+FROM person u, post p
+WHERE p.author = u.id AND p.thread = ?
+GROUP BY name
+```
+
+**Result:** `u.id`, `u.email`, `u.usrStatus`, etc. return empty strings, while `name` and `count(*)` are correct.
+
+**Fix:** (Workaround in forum code) Replaced `GROUP BY` queries with `DISTINCT` + separate subqueries where ordering by count is not critical:
+
+```sql
+SELECT DISTINCT u.id, u.name, u.email, ...
+FROM person u, post p
+WHERE p.author = u.id AND p.thread = ?
+LIMIT 5
+```
+
+---
+
+## 6. Inconsistent Aggregate Column Names
+
+**Problem:** Aggregate functions produce column names that omit the argument expression:
+
+- `SELECT count(*)` → column name `count()`
+- `SELECT max(id)` → column name `max()`
+- `SELECT min(creation)` → column name `min()`
+
+Code that relies on exact column names (e.g. `getValue` looking up `count(*)`) can be confused.
+
+**Fix:** (Workaround in forum code) Avoided name-dependent lookup and rewrote queries to use positional access via `getRow()` / `getAllRows()`.
+
+---
+
+## 7. Async Client + waitFor in Async Context = Connection Instability
+
+**Problem:** The original `baradb_client.nim` used `AsyncSocket` wrapped in `SyncClient` via `waitFor`. When called from inside Jester's async handlers, nested `waitFor` + `poll()` created race conditions on the single socket. `recv(12)` occasionally returned 0 bytes, causing "Connection closed" exceptions.
+
+**Result:** Login and other routes crashed intermittently with 502 Bad Gateway.
+
+**Fix:** Built a new synchronous client (`forum/src/baradb_sync_client.nim`) using blocking `net.Socket` from Nim's standard library. This eliminates all async event loop interactions.
+
+Key differences from the async client:
+- Uses `net.Socket` instead of `asyncnet.AsyncSocket`
+- Uses blocking `recv()` with an explicit `recvExact()` helper
+- No dependency on `asyncdispatch` or `waitFor`
+- Fully compatible with the existing wire protocol
+
+---
+
+## 8. Lack of Thread Safety in the Adapter
+
+**Problem:** A single `SyncClient` instance was shared across all HTTP requests. NimForum runs on Jester's async event loop, which can interleave request handlers in the same thread. Without synchronization, two handlers could send queries over the same socket simultaneously, corrupting the wire protocol stream.
+
+**Fix:** Added a global `Lock` and `withDbLock` template in `forum/src/baradb_sqlite.nim`:
+
+```nim
+var dbLock: Lock
+initLock(dbLock)
+
+template withDbLock(body: untyped) =
+  acquire(dbLock)
+  try: body
+  finally: release(dbLock)
+```
+
+All DB operations (`query`, `getRow`, `exec`, etc.) are wrapped in this lock.
+
+---
+
+## 9. `key` is a Reserved SQL Keyword
+
+**Problem:** BaraDB's SQL parser treats `key` as a reserved keyword. Using it as a column or table name causes parse errors:
+
+```
+Expected tkIdent but got tkKey
+```
+
+**Result:** The `settings` table could not use `key varchar(100) primary key`.
+
+**Fix:** Added backtick-quoted identifier support in `query/lexer.nim`. Users can now escape reserved keywords using backticks:
+
+```sql
+CREATE TABLE settings(
+  `key` varchar(100) primary key,
+  value varchar(500) default ''
+);
+```
+
+Changes made:
+- Added `readBacktickIdent()` proc in `lexer.nim`
+- Added backtick case in `nextToken()` to recognize `` `identifier` `` as `tkIdent`
+
+---
+
+## 10. Empty String (`""`) Treated as NULL
+
+**Problem:** BaraDB normalized empty strings to `NULL` internally. A column defined as `NOT NULL` rejected empty string inserts, even when the application explicitly passed `''`.
+
+**Result:** SMTP settings saved via the admin panel failed with constraint violations when fields were left blank:
+
+```sql
+INSERT INTO settings (skey, value) VALUES ('smtpUser', '');
+-- ERROR: NOT NULL constraint violation
+```
+
+**Fix:** Changed internal NULL representation from empty string `""` to `\N` in `query/executor.nim`:
+
+1. `isNull()` now checks for `\N` instead of `value.len == 0`
+2. NULL literals in INSERT/UPDATE store `\N` instead of `""`
+3. Missing columns return `\N` instead of `""`
+4. `getValue()` returns `\N` for missing fields
+5. JOIN padding uses `\N` for unmatched rows
+6. Server wire protocol uses `\N` sentinel to send `fkNull`
+7. HTTP server sends JSON `null` for NULL values
+
+This allows empty strings to be stored in NOT NULL columns while still properly supporting NULL values.
+
+---
+
+## Summary Table
+
+| # | Issue | Location | Type |
+|---|-------|----------|------|
+| 1 | Comma join parsing | `query/parser.nim` | Parser bug |
+| 2 | DEFAULT not evaluated | `query/executor.nim` | Schema bug |
+| 3 | Duplicate column overwrite | `query/executor.nim` | Data structure bug |
+| 4 | Empty result = no columns | `core/server.nim` | Protocol bug |
+| 5 | GROUP BY empty values | N/A (engine behavior) | Semantic difference |
+| 6 | Inconsistent agg names | N/A (engine behavior) | Naming convention |
+| 7 | Async client unstable | `forum/src/baradb_client.nim` | Client design |
+| 8 | No thread safety | `forum/src/baradb_sqlite.nim` | Adapter design |
+| 9 | `key` reserved keyword | `query/lexer.nim` | Parser limitation |
+| 10 | Empty string = NULL | `query/executor.nim` | Data handling bug |
+
+---
+
+*Document version: 2026-05-17*

Dockerfile.source

@@ -4,9 +4,9 @@
 # └─────────────────────────────────────────────────────────┘
 #
 # Този Dockerfile build-ва BaraDB от source код.
-# ВНИМАНИЕ: Изисква локални nimble пакети (hunos, nimmax), които
+# ВНИМАНИЕ: Изисква локален nimble пакет (hunos), който
-# не са в публичния nimble repository. Преди build трябва да:
+# не е в публичния nimble repository. Преди build трябва да:
-#   1. symlink-нете или копирате hunos/ и nimmax/ в проекта, или
+#   1. symlink-нете или копирате hunos/ в проекта, или
 #   2. копирате ~/.nimble/pkgs2 в builder стейджа.
 #
 # Build:

PLAN.md

@@ -123,3 +123,82 @@
 
 **BaraDB v1.0.0 е production-ready за blogs, e-commerce и small ERP системи.**
 **Всички distributed gaps са запълнени: replication, gossip transport, sharding migration, inter-module wiring.**
+
+---
+
+## 🆕 Сесия 9 — Stabilization Sprint (май 2026)
+
+> **Цел:** Да махнем всички workaround-и от `BARADB_DEFICIENCIES.md`, да почистим build-а и да подготвим почвата за типова система.
+> **Принцип:** Без нови светове — само stabilizaция на съществуващото.
+
+### Седмица 1: Deficiency Hunt + Build Cleanup
+
+| # | Задача | Оценка | Статус |
+|---|--------|--------|--------|
+| 9.1.1 | Почистване на 9-те build warnings (ResultShadowed + UnusedImport) | 1ч | ✅ |
+| 9.1.2 | Issue #6: Aggregate column names (`count(*)` → `count(*)`, `max(id)` → `max(id)`) | 2ч | ✅ |
+| 9.1.3 | Issue #5: GROUP BY bare columns — първи ред от групата за non-aggregated колони | 4-6ч | 🔄 |
+| 9.1.4 | Issue #7+8: Решение за async vs sync client + thread safety | 2ч | 🔄 |
+| 9.1.5 | Regression тестове за всички 10 deficiencies | 2ч | 🔄 |
+
+**Метрика:** NimForum миграционният код маха всички `DISTINCT` workaround-и за GROUP BY.
+
+---
+
+### Седмица 2: Type Safety in Execution Layer
+
+| # | Задача | Оценка | Статус |
+|---|--------|--------|--------|
+| 9.2.1 | `IRExpr` носи `expectedType` — всеки AST node знае дали е INT, FLOAT, TEXT, NULL | 4-6ч | 🔄 |
+| 9.2.2 | `evalExpr` връща discriminated union (`Value(kind: vkInt64/Float64/String/Null)`) вместо само `string` | 6-8ч | 🔄 |
+| 9.2.3 | `irAdd`/`irSub`/`irMul`/`irDiv` използват типовата информация (INT+INT → INT, INT+FLOAT → FLOAT) | 3ч | 🔄 |
+| 9.2.4 | `validateType` използва `Value.kind` вместо `parseInt`/`parseFloat` на string | 2ч | 🔄 |
+
+**Метрика:** Премахваме всички `try: parseFloat catch: return fallback` евристики от `evalExpr`.
+
+---
+
+### Седмица 3: JOIN Performance
+
+| # | Задача | Оценка | Статус |
+|---|--------|--------|--------|
+| 9.3.1 | Hash Join: `ON a.col = b.col` с hash table върху по-малката страна | 6ч | 🔄 |
+| 9.3.2 | Index Nested Loop Join: ако има B-Tree индекс на join колоната | 4ч | 🔄 |
+| 9.3.3 | Benchmark: `thread JOIN category` с 10K/100K/1M редове | 2ч | 🔄 |
+| 9.3.4 | Query planner избира между Nested Loop / Hash / Index въз основа на cardinality | 4ч | 🔄 |
+
+**Метрика:** JOIN с 100K редове е под 100ms.
+
+---
+
+### Седмица 4: Production Hardening
+
+| # | Задача | Оценка | Статус |
+|---|--------|--------|--------|
+| 9.4.1 | Property-based tests за `evalExpr` — случайни AST-та, проверка на invariant-и | 4ч | 🔄 |
+| 9.4.2 | Fuzz test за wire protocol — случайни байтове в `_requestQueue` на JS client-а | 3ч | 🔄 |
+| 9.4.3 | Thread safety audit: `execInsert`/`execUpdate`/`execDelete` с shared `ExecutionContext` | 3ч | 🔄 |
+| 9.4.4 | Final integration test: NimForum login + thread list + post create с BaraDB | 4ч | 🔄 |
+
+**Метрика:** 48 часа continuous fuzzing без crash. NimForum smoke test минава end-to-end.
+
+---
+
+### Рискове и митигации
+
+| Риск | Митигация |
+|------|-----------|
+| GROUP BY bare columns е по-сложен от очакваното | Fallback: SQLite behavior (първи ред), не PostgreSQL (грешка) |
+| Type safety рефакторингът чупи 294 теста | Правим го на отделен branch, не в `main` |
+| Hash Join изисква памет proportional на N | Добавяме `work_mem` лимит като PostgreSQL |
+
+---
+
+### Текущи метрики (преди сесия 9)
+
+| Метрика | Стойност |
+|---------|----------|
+| **Тестове** | 294 — 0 failures |
+| **Build warnings** | 9 (3× ResultShadowed + 6× UnusedImport) |
+| **BARADB_DEFICIENCIES** | 4 непоправени (#5, #6, #7, #8) |
+| **Workaround-и в NimForum** | 2 (GROUP BY → DISTINCT, aggregate positional access) |

PLAN_ID_GENERATORS.md

@@ -0,0 +1,71 @@
+# Plan: ID Generators & Sequence System
+
+## Goal
+Add auto-generated ID support to BaraDB so users don't need to manually supply IDs on INSERT.
+
+## Phase 1: ID Generators
+
+### 1.1 AUTO_INCREMENT on INTEGER columns
+- Add `AUTO_INCREMENT` keyword to lexer
+- Parse in CREATE TABLE: `id INTEGER PRIMARY KEY AUTO_INCREMENT`
+- Store auto-increment state per table in ExecutionContext (counter)
+- On INSERT without explicit ID → auto-populate with next value
+- Thread-safe counter (atomic increment)
+
+### 1.2 SERIAL / BIGSERIAL as syntactic sugar
+- `SERIAL` = `INTEGER AUTO_INCREMENT`
+- `BIGSERIAL` = `BIGINT AUTO_INCREMENT`
+- Already partially parsed — wire to auto-increment logic
+
+### 1.3 UUID generation
+- Add `gen_random_uuid()` or `uuid()` as built-in function
+- Can be used in INSERT: `INSERT INTO t (id) VALUES (uuid())`
+- Also usable as DEFAULT: `id UUID DEFAULT uuid()`
+- Use Nim's std/oids or crypto random
+
+### 1.4 RETURNING clause
+- After INSERT, return generated values
+- `INSERT INTO t (name) VALUES ('x') RETURNING id`
+- Already partially parsed — wire to execution
+
+### 1.5 CREATE SEQUENCE / nextval / currval
+- `CREATE SEQUENCE seq_name START 1 INCREMENT 1`
+- `nextval('seq_name')` → returns next value
+- `currval('seq_name')` → returns current value
+- Store sequences in ExecutionContext
+
+### 1.6 Snowflake ID (distributed)
+- 64-bit ID = timestamp(41) + node_id(10) + sequence(12)
+- `snowflake_id(node_id)` function
+- For future distributed use
+
+## Phase 2: JOIN Optimizations (future)
+
+### 2.1 Hash Join
+- For equi-join ON a.col = b.col
+- Build hash table on smaller side, probe with larger
+- O(N+M) instead of O(N*M)
+
+### 2.2 Index Nested Loop Join
+- If index exists on join column → probe index per left row
+- O(N * log M) instead of O(N*M)
+
+### 2.3 Merge Join
+- For sorted inputs
+- Two-pointer sweep O(N+M)
+
+## Phase 3: Foreign Key Enforcement (future)
+
+### 3.1 CASCADE DELETE
+### 3.2 SET NULL on delete
+### 3.3 RESTRICT on delete
+### 3.4 ON UPDATE CASCADE
+### 3.5 FK check on UPDATE (not just INSERT)
+
+## Implementation Order
+1. AUTO_INCREMENT (lexer + parser + executor)
+2. SERIAL/BIGSERIAL sugar
+3. UUID function
+4. RETURNING clause
+5. Sequences (CREATE SEQUENCE / nextval / currval)
+6. Snowflake ID function

PLAN_SQL_ADVANCED.md

@@ -0,0 +1,351 @@
+# BaraDB — Универсален план за Advanced SQL Engine
+
+> **Визия**: BaraDB е самостоятелен, универсален SQL engine с Nim ядро, поддържащ модерни SQL:2023 разширения — Property Graph, Vector Search, JSON документи и прозоречни функции, в една вградена или клиент/сървър конфигурация.
+> 
+> **Принцип**: Само основи. Не се добавят нови светове — само стабилизираме и документираме съществуващите.
+>
+> **Multi-Tenant фокус**: BaraDB е проектирана да поддържа ERP сценарии с много фирми (tenants) в една база данни. Всеки tenant се изолира чрез Row-Level Security (RLS) + session variables (`SET app.tenant_id = 'X'`), а не чрез отделни бази.
+
+---
+
+## История на разработката
+
+- **Фаза 1 (Base SQL + MVCC + Raft)**: BaraDB core engine
+- **Фаза 2 (Advanced SQL)**: Разработена с **Xiaomi Mimo** (`mimo-v2.5-pro`) — Window Functions, MERGE, LATERAL JOIN, Advanced Aggregates, PIVOT/UNPIVOT, SQL/PGQ Property Graph
+- **Фаза 3 (Stabilization + Multi-Tenant)**: Текуща — Vector SQL Integration, Session Variables, `current_user`/`current_role`, RLS tenant isolation, тестове, документация
+
+---
+
+---
+
+## Част 1: BaraDB Advanced SQL Engine
+
+### 1.1 Window Functions ✅ ГОТОВО
+
+Нови AST nodes: `nkWindowExpr`, `nkOverClause`, `nkFrameSpec`. Нов IR plan: `irpkWindow`.
+
+| Функция | Описание | Статус |
+|---------|----------|--------|
+| `ROW_NUMBER()` | Пореден номер в партишъна | ✅ |
+| `RANK()` / `DENSE_RANK()` | Класиране с/без gaps | ✅ |
+| `LEAD(col, n, default)` / `LAG(col, n, default)` | Достъп до съседни редове | ✅ |
+| `FIRST_VALUE(col)` / `LAST_VALUE(col)` | Краен елемент във frame | ✅ |
+| `NTILE(n)` | Bucket-ване в n части | ✅ |
+
+Frame поддръжка: `ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW` ✅
+
+Файлове: `lexer.nim`, `ast.nim`, `ir.nim`, `parser.nim`, `executor.nim`, `codegen.nim`
+Тестове: 5 теста в `tests/test_all.nim`, всички зелени.
+
+### 1.2 MERGE / UPSERT ✅ ГОТОВО
+
+```sql
+MERGE INTO inventory AS target
+USING updates AS source
+ON target.sku = source.sku
+WHEN MATCHED THEN UPDATE SET qty = target.qty + source.delta
+WHEN NOT MATCHED THEN INSERT (sku, qty) VALUES (source.sku, source.delta);
+```
+
+- Поддържа таблица или subquery като source
+- WHEN MATCHED UPDATE с eval на изрази (target.col + source.col)
+- WHEN NOT MATCHED INSERT с eval на value изрази
+- Trigger support (BEFORE/AFTER UPDATE/INSERT)
+
+Файлове: `lexer.nim`, `ast.nim`, `ir.nim`, `parser.nim`, `executor.nim`, `codegen.nim`
+Тестове: 2 теста в `tests/test_all.nim`, всички зелени.
+
+### 1.3 LATERAL JOIN / CROSS APPLY ✅ ГОТОВО
+
+Позволява correlated subquery във FROM clause с достъп до лявата таблица.
+
+```sql
+SELECT u.name, recent_orders.*
+FROM users u,
+LATERAL (
+  SELECT order_id, total FROM orders o
+  WHERE o.user_id = u.id ORDER BY created_at DESC LIMIT 3
+) recent_orders;
+```
+
+- Поддържа `JOIN LATERAL`, `LEFT JOIN LATERAL`, `CROSS JOIN LATERAL`
+- Correlated references (e.g. `u.id`) чрез scan + merge + filter стратегия
+- Sort и Limit от subquery се прилагат след merge
+- LEFT LATERAL запазва unmatched редове с NULL padding
+
+Файлове: `lexer.nim`, `ast.nim`, `ir.nim`, `parser.nim`, `executor.nim`
+Тестове: 4 execution теста + 3 parser теста, всички зелени.
+
+### 1.4 Advanced Aggregates ✅ ГОТОВО
+
+- `ARRAY_AGG(col ORDER BY ...)`
+- `STRING_AGG(col, delimiter)`
+- `COUNT(*) FILTER (WHERE ...)`
+- `GROUPING SETS`, `CUBE`, `ROLLUP`
+
+#### GROUP BY + HAVING ✅ ГОТОВО
+
+- SUM/AVG/MIN/MAX оценяват се в групите
+- HAVING филтрира групите по aggregate условия
+- Pre-computed aggregates се съхраняват в group rows
+- evalExpr поддържа irekAggregate lookup
+
+Тестове: 6 теста в `tests/test_all.nim`, всички зелени.
+
+#### FILTER (WHERE ...) ✅ ГОТОВО
+
+```sql
+SELECT COUNT(*) FILTER (WHERE active = true) FROM users;
+SELECT dept, SUM(amount) FILTER (WHERE amount > 100) FROM sales GROUP BY dept;
+```
+
+- Parser: `FILTER (WHERE ...)` след aggregate function call
+- AST: `funcFilter*: Node` на `nkFuncCall`
+- IR: `aggFilter*: IRExpr` на `irekAggregate`
+- Executor: филтрира редове преди aggregate computation
+
+Тестове: 2 execution теста + 1 parser тест, всички зелени.
+
+#### ARRAY_AGG / STRING_AGG ✅ ГОТОВО
+
+```sql
+SELECT dept, ARRAY_AGG(amount) AS amounts FROM sales GROUP BY dept;
+SELECT dept, STRING_AGG(name, ', ') AS names FROM employees GROUP BY dept;
+```
+
+- Нови IR aggregate ops: `irArrayAgg`, `irStringAgg`
+- Multi-argument aggregate parsing (delimiter за STRING_AGG)
+- FILTER support за двете функции
+
+Тестове: 2 теста, всички зелени.
+
+#### GROUPING SETS / ROLLUP / CUBE ✅ ГОТОВО
+
+```sql
+SELECT dept, SUM(amount) FROM sales GROUP BY ROLLUP (dept);
+SELECT dept, job, SUM(amount) FROM sales GROUP BY CUBE (dept, job);
+SELECT dept, job, SUM(amount) FROM sales GROUP BY GROUPING SETS ((dept), (job), ());
+```
+
+- ROLLUP(a, b) → GROUPING SETS ((a,b), (a), ())
+- CUBE(a, b) → GROUPING SETS ((a,b), (a), (b), ())
+- Генериране на subsets за CUBE чрез powerset алгоритъм
+
+Тестове: 4 parser теста + 1 execution тест, всички зелени.
+
+### 1.5 PIVOT / UNPIVOT ✅ ГОТОВО
+
+```sql
+SELECT * FROM (SELECT name, dept, salary FROM emp) 
+PIVOT (SUM(salary) FOR dept IN ('Eng', 'Sales'));
+
+SELECT * FROM emp
+UNPIVOT (salary FOR dept IN (eng_salary, sales_salary));
+```
+
+- Parser: PIVOT/UNPIVOT в FROM clause
+- IR: `irpkPivot`, `irpkUnpivot`
+- Executor: group by identity cols → aggregate per pivot value → create columns
+- Subquery storage в `nkFrom.fromSubquery`
+
+Тестове: 1 parser + 1 execution тест, всички зелени.
+
+### 1.6 SQL:2023 Property Graph (SQL/PGQ) ✅ ГОТОВО (Parser)
+
+```sql
+SELECT * FROM GRAPH_TABLE(org_chart
+  MATCH (e)-[r]->(d)
+  COLUMNS (e.name, d.name)
+);
+```
+
+- Lexer: `tkVertex`, `tkEdge`, `tkLabels`, `tkGraphTable`, `tkMatch`, `tkColumns`, `tkSrc`, `tkDst`
+- AST: `nkGraphTraversal` с `gtGraphName`, `gtReturnCols`
+- IR: `irpkGraphTraversal` с `graphName`, `graphAlgo`, `graphReturnCols`
+- Executor: table-based graph storage (`graph_nodes`, `graph_edges`)
+- Parser: `GRAPH_TABLE(name MATCH (pattern) COLUMNS (cols))`
+
+Тестове: 1 parser тест, всички зелени.
+
+---
+
+## Част 1.5: Multi-Tenant ERP Support ✅ ГОТОВО
+
+BaraDB поддържа multi-tenant архитектура, при която множество фирми (tenants) работят в една физическа база данни. Това е критично за ERP сценарии, където поддръжката на "сто бази" не е опция.
+
+### Механизъм
+
+| Компонент | Описание |
+|-----------|----------|
+| **Session Variables** | `SET app.tenant_id = 'company-123'` — задава tenant за текущата сесия |
+| **current_setting()** | `current_setting('app.tenant_id')` — чете session променлива в SQL израз |
+| **current_user** | `current_user` — връща автентикирания потребител от JWT/SCRAM |
+| **current_role** | `current_role` — връща ролята на автентикирания потребител |
+| **RLS Policies** | `CREATE POLICY tenant_isolation ON invoices FOR SELECT USING (tenant_id = current_setting('app.tenant_id'))` |
+| **Auth Bridge** | `server.nim` и `httpserver.nim` попълват `ExecutionContext.currentUser`/`currentRole` след верификация |
+
+### Пример
+
+```sql
+-- Една таблица за всички фирми
+CREATE TABLE invoices (
+  id SERIAL PRIMARY KEY,
+  tenant_id TEXT NOT NULL,
+  data JSONB
+);
+
+-- Изолация чрез RLS
+CREATE POLICY tenant_isolation ON invoices
+  FOR SELECT USING (tenant_id = current_setting('app.tenant_id'));
+
+-- Всяка сесия вижда само своя tenant
+SET app.tenant_id = 'company-a';
+SELECT * FROM invoices;  -- → само фактури на company-a
+```
+
+### Архитектурни предимства
+
+- **JSONB документи** — schema-flexible, лесно се добавят нови полета без миграции (като ArangoDB)
+- **RLS изолация** — базата данни гарантира, че всеки tenant вижда само своите данни
+- **Един instance** — един BaraDB сървър обслужва всички tenants, вместо сто отделни бази
+- **Auth integration** — JWT/SCRAM токените носят `sub` (user) и `role`, които се пропагират до executor-а
+
+---
+
+## Част 2: Мултимодални Възможности (Core Only)
+
+### 2.1 JSON / JSONB Документи ✅ ГОТОВО
+
+```sql
+SELECT data->>'name' FROM users WHERE data->'tags' @> '["admin"]';
+```
+
+- Типове: `JSON`, `JSONB` колони в таблици
+- Оператори: `->`, `->>`, `#>`, `#>>`, `@>`, `<@`, `?`, `?&`, `?|`
+- Функции: `jsonb_array_elements`, `jsonb_object_keys`, `jsonb_extract_path`
+- Съхранение: двоично parsed tree (не plain text)
+
+### 2.2 Vector Search ⚠️ ЧАСТИЧНО (Engine ✅, SQL Integration 🔄)
+
+**Вектор Engine (готов):**
+- `src/barabadb/vector/engine.nim` — HNSW index с cosine/euclidean distance
+- `src/barabadb/vector/quant.nim` — IVF-PQ quantization
+- `src/barabadb/vector/simd.nim` — SIMD оптимизации
+- `src/barabadb/core/crossmodal.nim` — CrossModalEngine за хибридно търсене (vector + text)
+
+**Липсваща SQL интеграция (базова — за стабилизация):**
+```sql
+-- Тип и колона
+CREATE TABLE items (id INT PRIMARY KEY, embedding VECTOR(768));
+
+-- Index
+CREATE VECTOR INDEX idx_items_vec ON items(embedding) 
+  USING hnsw WITH (m = 16, ef_construction = 200, metric = 'cosine');
+
+-- Query functions
+SELECT id, cosine_distance(embedding, '[0.1, 0.2, ...]') AS dist
+FROM items
+ORDER BY dist ASC
+LIMIT 10;
+```
+
+**Задачи за стабилизация (всички изпълнени):**
+- [x] `VECTOR(n)` тип в CREATE TABLE (parser + storage)
+- [x] `CREATE VECTOR INDEX ... USING hnsw` (DDL)
+- [x] `cosine_distance()`, `euclidean_distance()`, `inner_product()` в SQL expression evaluator
+- [x] `<->` nearest-neighbor оператор в ORDER BY / WHERE
+- [x] Executor integration: HNSW index population при CREATE INDEX и DML
+
+**Статус:** ✅ ГОТОВО. 8 SQL-level vector теста зелени.
+
+### 2.3 Full-Text Search ✅ ГОТОВО
+
+- Inverted Index в `src/barabadb/fts/`
+- `MATCH(column, query)` функция
+- BM25 scoring
+- Интеграция с CrossModalEngine за hybrid search
+
+---
+
+## Част 3: Транзакции и Протоколи ✅ ГОТОВО
+
+- MVCC с snapshot isolation
+- WAL + checkpoint
+- Distributed transactions (2PC) — `txn.addParticipant("vector")`
+- Wire protocol: binary за vectors, JSON за queries
+
+---
+
+## Имплементационен ред (финален статус)
+
+1. ✅ **Window Functions** (AST → Parser → IR → Executor → Tests)
+2. ✅ **MERGE statement** (Parser → Executor → Tests)
+3. ✅ **LATERAL JOIN** (Parser → Executor, correlated subquery strategy)
+4. ✅ **GROUP BY + HAVING** (SUM/AVG/MIN/MAX, HAVING filter)
+5. ✅ **FILTER clause** (COUNT/SUM/AVG FILTER (WHERE ...))
+6. ✅ **ARRAY_AGG / STRING_AGG** (multi-arg aggregates)
+7. ✅ **GROUPING SETS / ROLLUP / CUBE** (powerset generation)
+8. ✅ **PIVOT / UNPIVOT** (row-to-column transformation)
+9. ✅ **SQL/PGQ Property Graph** (GRAPH_TABLE MATCH parser)
+10. ✅ **JSON/JSONB** (operators + functions)
+11. ✅ **Full-Text Search** (inverted index + BM25)
+12. ✅ **Vector Engine** (HNSW + IVF-PQ + SIMD)
+13. ✅ **Vector SQL Integration** (тип, index, distance functions, <-> operator, ORDER BY)
+
+---
+
+## Крайно състояние
+
+**340+ теста зелени.** Всички фундаментални SQL:2023 features имплементирани.
+
+**Четирите свята:**
+
+| Свят | Features | Статус |
+|------|----------|--------|
+| **SQL** | Window, MERGE, LATERAL, GROUP BY/HAVING, FILTER, ARRAY_AGG, STRING_AGG, GROUPING SETS/ROLLUP/CUBE, PIVOT/UNPIVOT | ✅ |
+| **JSON** | JSON/JSONB колони, `->` / `->>` оператори | ✅ |
+| **Graph** | BFS/DFS/PageRank/Dijkstra engine + SQL/PGQ GRAPH_TABLE | ✅ |
+| **Vector** | HNSW index, cosine/euclidean distance, IVF-PQ, SIMD | ✅ Engine<br>🔄 SQL glue |
+| **FTS** | Inverted index, BM25, hybrid search | ✅ |
+
+**Файлове модифицирани:**
+- `lexer.nim` — tkLateral, tkFilter, tkPivot, tkUnpivot, tkVertex, tkEdge, tkGraphTable, tkMatch, tkColumns, tkArrayAgg, tkStringAgg, tkGrouping, tkSets, tkRollup, tkCube, tkVector
+- `ast.nim` — joinLateral, funcFilter, nkPivot, nkUnpivot, GroupingSetsKind, nkGraphTraversal fields
+- `ir.nim` — joinLateral, aggFilter, irArrayAgg, irStringAgg, IRGroupingSetsKind, irpkGroupBy grouping sets, irpkPivot, irpkUnpivot, irpkGraphTraversal
+- `parser.nim` — LATERAL, FILTER, multi-arg aggregates, GROUPING SETS/ROLLUP/CUBE, PIVOT/UNPIVOT, GRAPH_TABLE
+- `executor.nim` — LATERAL correlated strategy, GROUP BY aggregates + HAVING, FILTER in aggregates, ARRAY_AGG/STRING_AGG, GROUPING SETS/ROLLUP/CUBE, PIVOT/UNPIVOT, GRAPH_TABLE, fromTable kind checks
+- `codegen.nim` — irpkPivot, irpkUnpivot, irpkGraphTraversal
+- `tests/test_all.nim` — 25+ нови теста
+- `tests/join_tests.nim` — 4 LATERAL теста
+
+---
+
+## Тестова стратегия
+
+- **Unit**: Всеки нов AST/IR/Parser тест — property-based (генериране на случайни partition/order)
+- **Integration**: HTTP server + клиент тестове
+- **TLA+**: `windowfunctions.tla` — deterministic partitioning semantics
+- **Benchmark**: Window function performance vs PostgreSQL (опционално)
+
+---
+
+## Поправени грешки при тази сесия
+
+- **Vector SQL Integration** — имплементиран пълен SQL glue за вектори (тип, индекс, функции, оператор)
+- **MERGE тестове** — поправени чрез изолиране на тестовата директория (unique temp dir per suite)
+- **Row storage escape** — `escapeRowVal()` в `execInsert` за стойности със запетай (vector literals)
+- **ORDER BY + projection** — `irpkSort` сега е преди `irpkProject` в `lowerSelect`, което позволява `ORDER BY` по колони извън `SELECT`
+- **GROUPING SETS execution** — `lowerSelect` сега проверява `selGroupingSetsKind != gskNone` освен `selGroupBy.len > 0`, което позволява изпълнение на GROUPING SETS без традиционен GROUP BY
+- **FTS CREATE INDEX docId** — поправено несъответствие в изчислението на `docId` при `CREATE INDEX ... USING FTS` (сега използва хеш на `tableName.$key`, съвместим с DML операциите)
+- **Тестова изолация (всички suite-ове)** — всички `newLSMTree("")` заменени с уникални temp директории; setup/teardown за suite-ове с изолирана state
+- **Multi-tenant ERP support** — имплементирани критични градивни елементи:
+  - `SET var = value` — session variables за tenant isolation
+  - `current_setting('var')` — четене на session променливи в SQL изрази
+  - `current_user` / `current_role` — SQL keywords, които се оценяват от `ExecutionContext`
+  - Auth bridge — `server.nim` и `httpserver.nim` попълват `currentUser`/`currentRole` след JWT/SCRAM верификация
+  - RLS tenant isolation тест — `CREATE POLICY` + `current_setting('app.tenant_id')` работи за multi-tenant филтрация
+  - `evalExpr` вече предава `ctx` рекурсивно — поправен бъг, при който `current_user`/`current_setting` връщаха празни стойности в под-изрази
+
+---
+
+> **Бележка**: Този план е *замразен* за нови светове. Следващата работа е само стабилизация на съществуващото и документация.

PR_DESCRIPTION.md

@@ -0,0 +1,60 @@
+# Nodebara Compatibility Fixes
+
+This PR bundles three independent fixes discovered while integrating BaraDB with [NodeBB](https://nodebb.org/) (a large Node.js forum application). Each commit is self-contained and can be reviewed separately.
+
+---
+
+## 1. fix(protocol): serialize float32/float64 in big-endian
+
+**Problem:**  
+The JavaScript client reads `FLOAT32`/`FLOAT64` wire values with `readFloatBE()` / `readDoubleBE()` (big-endian), but the Nim server was writing them with `copyMem(..., unsafeAddr fl, N)` — i.e. **native byte order**. On little-endian machines (virtually all x86_64 servers) the client deserializes garbage. Example: a zset `score = 1.0` becomes `3.03865e-319`, which breaks any application relying on numeric scores (user IDs, timestamps, rankings, etc.).
+
+**Fix:**  
+Cast floats to `int32`/`int64` and route them through the existing `bigEndian32`/`bigEndian64` helpers, exactly like the integer paths already do. Same change applied to deserialization.
+
+**Impact:**  
+Breaking fix for cross-platform wire compatibility. No API changes.
+
+---
+
+## 2. feat(client): add TCP request queue for safe concurrency
+
+**Problem:**  
+`Client.query()`, `execute()`, and `ping()` were async methods that wrote directly to the TCP socket. When NodeBB fired multiple parallel DB operations (common on startup), their binary frames interleaved on the wire, causing parse errors, wrong request/response pairing, and random crashes.
+
+**Fix:**  
+Introduce an internal `_requestQueue` + `_requestLock`. Every public async method enqueues a closure; a tiny drain loop processes them one at a time via `setImmediate()`.
+
+**Impact:**  
+No breaking API change. Existing single-request usage is unchanged; concurrent usage now works safely.
+
+---
+
+## 3. fix(gossip): use async UDP socket to avoid blocking the event loop
+
+**Problem:**  
+`startGossipListener` created a **synchronous** UDP socket (`newSocket`) and called blocking `recvFrom` inside an `async` proc. This freezes the entire async event loop until a UDP packet arrives, stalling all other async I/O.
+
+**Fix:**  
+Replace `newSocket` with `newAsyncSocket` and `recvFrom` with `await recvFrom`.
+
+**Impact:**  
+Non-breaking. Gossip remains optional; when enabled it no longer blocks the main loop.
+
+---
+
+## Testing
+
+- [x] NodeBB v4.11.2 setup completes end-to-end  
+- [x] Admin login works (relies on correct FLOAT64 score deserialization)  
+- [x] Concurrent DB queries during startup no longer corrupt frames  
+- [x] Gossip listener no longer blocks other async tasks
+
+---
+
+## Checklist
+
+- [x] Each commit is atomic and compiles on its own  
+- [x] No Nim compiler warnings introduced  
+- [x] JS client backward-compatible for single-request callers  
+- [x] Existing tests (`nimble test`) still pass

README.md

@@ -4,8 +4,9 @@
 
 **A multimodal database engine written in Nim — 100% native, zero dependencies.**
 
-[![Version](https://img.shields.io/badge/version-1.1.0-blue.svg)](baradadb.nimble)
+[![Version](https://img.shields.io/badge/version-1.1.2-blue.svg)](baradadb.nimble)
 [![Documentation](https://img.shields.io/badge/docs-7_languages-blue.svg)](docs/index.md)
+[![Stars](https://img.shields.io/github/stars/katehonz/barabaDB?style=social)](https://github.com/katehonz/barabaDB)
 
 ## Documentation
 
@@ -15,6 +16,8 @@ BaraDB combines document, graph, vector, columnar, and full-text search storage
 in a single engine with a unified query language (BaraQL). It compiles to a
 single 3.3MB binary with no runtime dependencies.
 
+⭐ Thank you to everyone who continues to star and support BaraDB on [GitHub](https://github.com/katehonz/barabaDB)!
+
 > **Current Status:** BaraDB is a production-ready multimodal database engine.
 > All core storage engines, query processing, and protocol layers are fully
 > implemented and tested. See [Limitations](#current-limitations) below for
@@ -285,8 +288,23 @@ let range = btree.scan("key_a", "key_z")
 
 ### Vector Engine
 
-Native HNSW and IVF-PQ indexes for similarity search.
+Native HNSW and IVF-PQ indexes for similarity search with full SQL integration.
 
+```sql
+-- SQL vector search
+CREATE TABLE items (id INT PRIMARY KEY, embedding VECTOR(768));
+INSERT INTO items (id, embedding) VALUES (1, '[0.1, 0.2, 0.3, ...]');
+
+-- Nearest neighbor search
+SELECT id FROM items
+ORDER BY cosine_distance(embedding, '[0.1, 0.2, 0.3, ...]') ASC
+LIMIT 10;
+
+-- With HNSW index
+CREATE INDEX idx_vec ON items(embedding) USING hnsw;
+```
+
+Native Nim API:
 ```nim
 import barabadb/vector/engine
 
@@ -301,7 +319,10 @@ let filtered = idx.searchWithFilter(queryVector, k = 10,
 ```
 
 Features:
-- **HNSW** — hierarchical navigable small world graph
+- **SQL vector types** — `VECTOR(n)` with dimension validation
+- **SQL distance functions** — `cosine_distance()`, `euclidean_distance()`, `inner_product()`, `l1_distance()`, `l2_distance()`
+- **`<->` operator** — Euclidean distance nearest-neighbor shorthand
+- **HNSW index** — `CREATE INDEX ... USING hnsw` with automatic maintenance
 - **IVF-PQ** — inverted file index with product quantization
 - **Distance metrics** — cosine, euclidean, dot product, Manhattan
 - **Quantization** — scalar 8-bit/4-bit, product, binary
@@ -606,6 +627,23 @@ See [docs/en/docker.md](docs/en/docker.md) for full Docker documentation.
 | `BARADB_CERT_FILE` | — | TLS certificate path |
 | `BARADB_KEY_FILE` | — | TLS private key path |
 
+## Built with BaraDB
+
+### NodeBara
+
+**[NodeBara](https://codeberg.org/baraDB/nodebara)** is the first large-scale application running on BaraDB — a modern forum platform forked from NodeBB and fully adapted for BaraDB's native multimodal engine.
+
+- **Concurrent query safety** — TCP request queue in the JS client handles NodeBara's parallel startup queries without frame corruption
+- **Numeric accuracy** — Big-endian float serialization guarantees correct zset scores, timestamps, and rankings across platforms
+- **Non-blocking cluster gossip** — Async UDP sockets keep the event loop free under load
+
+```bash
+git clone https://codeberg.org/baraDB/nodebara
+cd nodebara
+npm install
+npm run setup   # uses BaraDB as the default database
+```
+
 ## Client SDKs
 
 BaraDB provides official clients for multiple languages:
@@ -1214,7 +1252,7 @@ src/barabadb/
 ## Tests
 
 ```bash
-# Run all tests (262 tests, 56 suites)
+# Run all tests (340+ tests, 60+ suites)
 nim c --path:src -r tests/test_all.nim
 
 # Run benchmarks
@@ -1232,6 +1270,7 @@ nim c -d:release -r benchmarks/bench_all.nim
 | Protocol (binary + HTTP + WS + pool + auth + ratelimit) | ✅ | 100% | v1.0.0 |
 | Schema (inheritance + computed + migrations) | ✅ | 100% | v1.0.0 |
 | Vector engine (HNSW + IVF-PQ + quant + SIMD + metadata) | ✅ | 100% | v1.0.0 |
+| Vector SQL Integration (VECTOR type, distance functions, <->, HNSW indexes) | ✅ | 100% | v1.1.0 |
 | Graph engine (all algorithms + pattern matching) | ✅ | 100% | v1.0.0 |
 | FTS (BM25 + TF-IDF + fuzzy + regex + multi-language) | ✅ | 100% | v1.0.0 |
 | CLI shell | ✅ | 100% | v1.0.0 |

adaptors/nim/baradb_sqlite.nim

@@ -0,0 +1,149 @@
+## BaraDB adapter mimicking db_sqlite API for NimForum
+
+import std/strutils, std/tables, std/sequtils, std/parseutils
+import ../../clients/nim/src/baradb/client as baradb_client
+
+type
+  DbError* = object of CatchableError
+  SqlQuery* = distinct string
+  DbConn* = distinct pointer
+
+proc sql*(query: string): SqlQuery =
+  SqlQuery(query)
+
+proc dbError*(msg: string) {.noreturn.} =
+  var e: ref DbError
+  new(e)
+  e.msg = msg
+  raise e
+
+proc dbQuote*(s: string): string =
+  result = "'"
+  for c in items(s):
+    if c == '\'': add(result, "''")
+    else: add(result, c)
+  add(result, '\'')
+
+proc dbFormat*(formatstr: SqlQuery, args: varargs[string]): string =
+  var res = ""
+  var a = 0
+  for c in items(string(formatstr)):
+    if c == '?':
+      if a == args.len:
+        dbError("""The number of \"?\" given exceeds the number of parameters present in the query.""")
+      add(res, dbQuote(args[a]))
+      inc(a)
+    else:
+      add(res, c)
+  res
+
+proc toClient(db: DbConn): SyncClient =
+  cast[SyncClient](db)
+
+proc open*(connection, user, password, database: string): DbConn =
+  var config = defaultConfig()
+  if connection.contains(':'):
+    let parts = connection.split(':')
+    config.host = parts[0]
+    config.port = parseInt(parts[1])
+  elif connection.len > 0 and not connection.endsWith(".db"):
+    config.host = connection
+  config.database = database
+  config.username = user
+  config.password = password
+  var client = newSyncClient(config)
+  client.connect()
+  GC_ref(client)
+  return cast[DbConn](client)
+
+proc close*(db: DbConn) =
+  let client = toClient(db)
+  baradb_client.close(client)
+  GC_unref(client)
+
+proc exec*(db: DbConn, query: SqlQuery, args: varargs[string, `$`]) =
+  let client = toClient(db)
+  let q = dbFormat(query, args)
+  discard client.query(q)
+
+proc tryExec*(db: DbConn, query: SqlQuery, args: varargs[string, `$`]): bool =
+  try:
+    let client = toClient(db)
+    let q = dbFormat(query, args)
+    discard client.query(q)
+    return true
+  except:
+    return false
+
+proc getRow*(db: DbConn, query: SqlQuery, args: varargs[string, `$`]): seq[string] =
+  let client = toClient(db)
+  let q = dbFormat(query, args)
+  let qr = client.query(q)
+  if qr.rows.len > 0:
+    return qr.rows[0]
+  else:
+    return newSeq[string](qr.columns.len)
+
+proc getAllRows*(db: DbConn, query: SqlQuery, args: varargs[string, `$`]): seq[seq[string]] =
+  let client = toClient(db)
+  let q = dbFormat(query, args)
+  let qr = client.query(q)
+  return qr.rows
+
+proc getValue*(db: DbConn, query: SqlQuery, args: varargs[string, `$`]): string =
+  let row = getRow(db, query, args)
+  if row.len > 0: return row[0]
+  return ""
+
+iterator fastRows*(db: DbConn, query: SqlQuery, args: varargs[string, `$`]): seq[string] =
+  let client = toClient(db)
+  let q = dbFormat(query, args)
+  let qr = client.query(q)
+  for row in qr.rows:
+    yield row
+
+iterator rows*(db: DbConn, query: SqlQuery, args: varargs[string, `$`]): seq[string] =
+  for r in fastRows(db, query, args): yield r
+
+proc insertID*(db: DbConn, query: SqlQuery, args: varargs[string, `$`]): int64 =
+  let client = toClient(db)
+  let q = dbFormat(query, args)
+  discard client.query(q)
+  let sqlStr = string(query).strip().toLower()
+  var tableName = ""
+  if sqlStr.startsWith("insert into "):
+    let rest = sqlStr[12..^1]
+    let spacePos = rest.find(' ')
+    if spacePos > 0:
+      tableName = rest[0..<spacePos]
+  if tableName.len > 0:
+    let idQr = client.query("SELECT max(id) FROM " & tableName)
+    if idQr.rows.len > 0 and idQr.rows[0].len > 0:
+      try:
+        return parseInt(idQr.rows[0][0]).int64
+      except:
+        discard
+  return -1
+
+proc tryInsertID*(db: DbConn, query: SqlQuery, args: varargs[string, `$`]): int64 =
+  try:
+    return insertID(db, query, args)
+  except:
+    return -1
+
+proc nextId*(db: DbConn, tableName: string): int64 =
+  let client = toClient(db)
+  let qr = client.query("SELECT max(id) FROM " & tableName)
+  if qr.rows.len > 0 and qr.rows[0].len > 0:
+    try:
+      let current = parseInt(qr.rows[0][0])
+      return current.int64 + 1
+    except:
+      return 1
+  return 1
+
+proc execAffectedRows*(db: DbConn, query: SqlQuery, args: varargs[string, `$`]): int64 =
+  let client = toClient(db)
+  let q = dbFormat(query, args)
+  let qr = client.query(q)
+  return qr.affectedRows.int64

adaptors/nim/test_baradb_adapter.nim

@@ -0,0 +1,21 @@
+import baradb_sqlite
+
+var db = open("127.0.0.1:9472", "", "", "default")
+
+db.exec(sql"CREATE TABLE test_adapter (id INT PRIMARY KEY, name STRING)")
+db.exec(sql"INSERT INTO test_adapter (id, name) VALUES (1, 'hello')")
+db.exec(sql"INSERT INTO test_adapter (id, name) VALUES (2, 'world')")
+
+let rows = db.getAllRows(sql"SELECT * FROM test_adapter")
+echo "All rows: ", rows
+
+let row = db.getRow(sql"SELECT * FROM test_adapter WHERE id = 1")
+echo "Row 1: ", row
+
+let val = db.getValue(sql"SELECT name FROM test_adapter WHERE id = 2")
+echo "Value: ", val
+
+let cnt = db.getValue(sql"SELECT count(*) FROM test_adapter")
+echo "Count: ", cnt
+
+db.close()

baradadb.nimble

@@ -1,5 +1,5 @@
 # Package
-version       = "1.1.0"
+version       = "1.1.2"
 author        = "BaraDB Team"
 description   = "BaraDB — Multimodal database written in Nim"
 license       = "Apache-2.0"
@@ -15,13 +15,13 @@ requires "checksums >= 0.2.0"
 
 # Tasks
 task build_debug, "Build debug version":
-  exec "nim c -d:ssl --threads:on --debugger:native --linedir:on -o:build/baradadb src/baradadb.nim"
+  exec "nim c --debugger:native --linedir:on -o:build/baradadb src/baradadb.nim"
 
 task build_release, "Build release version":
-  exec "nim c -d:ssl --threads:on -d:release --opt:speed -o:build/baradadb src/baradadb.nim"
+  exec "nim c -d:release --opt:speed -o:build/baradadb src/baradadb.nim"
 
 task test, "Run all tests":
-  exec "nim c --path:src -d:ssl --threads:on -r tests/test_all.nim"
+  exec "nim c -r tests/test_all.nim"
 
 task bench, "Run benchmarks":
-  exec "nim c --path:src -d:ssl --threads:on -d:release -r benchmarks/bench_all.nim"
+  exec "nim c -d:release -r benchmarks/bench_all.nim"

clients/javascript/README.md

@@ -20,7 +20,7 @@ npm install baradb
 Or from source:
 
 ```bash
-git clone https://github.com/barabadb/baradadb.git
+git clone https://codeberg.org/baraba/baradb
 cd clients/javascript
 npm link
 ```

clients/javascript/baradb.js

@@ -244,6 +244,8 @@ class Client {
     this.requestId = 0;
     this._buffer = Buffer.alloc(0);
     this._pendingResolve = null;
+    this._requestQueue = [];
+    this._requestLock = false;
   }
 
   async connect() {
@@ -478,8 +480,31 @@ class Client {
     throw new Error(`Unexpected auth response: 0x${header.kind.toString(16)}`);
   }
 
+  async _processQueue() {
+    if (this._requestLock || this._requestQueue.length === 0) return;
+    this._requestLock = true;
+    const { task, resolve, reject } = this._requestQueue.shift();
+    try {
+      const result = await task();
+      resolve(result);
+    } catch (err) {
+      reject(err);
+    } finally {
+      this._requestLock = false;
+      setImmediate(() => this._processQueue());
+    }
+  }
+
+  _enqueue(task) {
+    return new Promise((resolve, reject) => {
+      this._requestQueue.push({ task, resolve, reject });
+      this._processQueue();
+    });
+  }
+
   async ping() {
     if (!this.connected) throw new Error('Not connected');
+    return this._enqueue(async () => {
       const msg = this._build(MsgKind.PING, Buffer.alloc(0));
       this.socket.write(msg);
 
@@ -487,10 +512,12 @@ class Client {
       if (header.kind === MsgKind.PONG) return true;
       if (header.kind === MsgKind.ERROR) throw await this._readError(header.length);
       return false;
+    });
   }
 
   async query(sql) {
     if (!this.connected) throw new Error('Not connected');
+    return this._enqueue(async () => {
       const queryBuf = Buffer.from(sql, 'utf-8');
       const payload = Buffer.alloc(4 + queryBuf.length + 1);
       payload.writeUInt32BE(queryBuf.length, 0);
@@ -510,10 +537,12 @@ class Client {
         return result;
       }
       return new QueryResult();
+    });
   }
 
   async queryParams(sql, params = []) {
     if (!this.connected) throw new Error('Not connected');
+    return this._enqueue(async () => {
       const queryBuf = Buffer.from(sql, 'utf-8');
       const paramParts = [];
       for (const p of params) {
@@ -542,6 +571,7 @@ class Client {
         return result;
       }
       return new QueryResult();
+    });
   }
 
   async execute(sql) {

clients/javascript/package.json

@@ -1,6 +1,6 @@
 {
   "name": "baradb",
-  "version": "1.1.0",
+  "version": "1.1.2",
   "description": "Official JavaScript/Node.js client for BaraDB — Multimodal Database Engine",
   "main": "baradb.js",
   "types": "baradb.d.ts",

clients/javascript/tests/integration.test.js

@@ -8,8 +8,8 @@ const assert = require('node:assert');
 const net = require('net');
 const { Client, WireValue, QueryBuilder } = require('../baradb');
 
-const HOST = 'localhost';
+const HOST = process.env.BARADB_HOST || 'localhost';
-const PORT = 9472;
+const PORT = parseInt(process.env.BARADB_PORT || '9472', 10);
 
 function serverAvailable() {
   return new Promise((resolve) => {

clients/nim/README.md

@@ -15,13 +15,13 @@ Official Nim client for **BaraDB** — a multimodal database engine.
 Add to your `.nimble` file:
 
 ```nim
-requires "baradb >= 1.0.0"
+requires "baradb >= 1.1.0"
 ```
 
 Or clone locally:
 
 ```bash
-git clone https://github.com/barabadb/baradadb.git
+git clone https://codeberg.org/baraba/baradb
 cd clients/nim
 nimble develop
 ```
@@ -141,6 +141,23 @@ nim c -r tests/test_integration.nim
 
 Same as async but blocking. Available on `SyncClient`.
 
+## Ormin Integration
+
+The Nim client ships with an [Ormin](https://github.com/Araq/ormin) backend for compile-time checked SQL queries.
+
+```nim
+import ormin
+
+importModel(DbBackend.baradb, "my_model")
+let db {.global.} = open("127.0.0.1:9472", "admin", "", "default")
+
+let rows = query:
+  select users(id, name)
+  where name == ?"alice"
+```
+
+See `examples/ormin_basic.nim` for a full sample.
+
 ## License
 
 Apache-2.0

clients/nim/baradb.nimble

@@ -1,6 +1,6 @@
 # Package
 
-version       = "1.1.0"
+version       = "1.1.2"
 author        = "BaraDB Team"
 description   = "Official Nim client for BaraDB — async binary protocol client"
 license       = "Apache-2.0"

clients/nim/ormin/.github/workflows/test.yml

@@ -0,0 +1,68 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    services:
+      postgres:
+        image: postgres:14
+        env:
+          POSTGRES_PASSWORD: test
+          POSTGRES_USER: test
+          POSTGRES_DB: test_ormin
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+
+    strategy:
+      matrix:
+        nim:
+          - stable
+    name: Test on nim ${{ matrix.nim }}
+    steps:
+    - name: Checkout source code
+      uses: actions/checkout@v4
+      
+    - name: Cache choosenim
+      id: cache-choosenim
+      uses: actions/cache@v4
+      with:
+        path: ~/.choosenim
+        key: ${{ runner.os }}-choosenim-stable
+
+    - name: Cache nimble
+      id: cache-nimble
+      uses: actions/cache@v4
+      with:
+        path: ~/.nimble
+        key: ${{ runner.os }}-nimble-stable
+
+    - name: Setup nim
+      uses: jiro4989/setup-nim-action@v2
+      with:
+        nim-version: ${{ matrix.nim }}
+
+    - name: Install dependencies
+      run: |
+        nimble --useSystemNim install -d
+        nimble --useSystemNim install karax -y
+        nimble --useSystemNim install jester -y
+        nimble --useSystemNim install websocket -y
+      
+    - name: Run test sqlite
+      run: nimble --useSystemNim test
+
+    - name: Run test postgres
+      run: nimble --useSystemNim test_postgres
+      env:
+        PGPASSWORD: test
+
+    - name: Build examples
+      run: nimble buildexamples

clients/nim/ormin/.gitignore

@@ -0,0 +1,29 @@
+*
+!*/
+!*.*
+*.db
+*.js
+nimcache
+tools/ormin_importer
+tests/forum_model_sqlite.nim
+tests/forum_model_postgres.nim
+tests/model_postgre.nim
+tests/model_sqlite.nim
+tests/tfeature
+tests/tcommon
+tests/tpostgre
+tests/tsqlite
+examples/chat/chat_model.nim
+examples/chat/chatclient.nim
+examples/chat/createdb
+examples/chat/server
+examples/forum/forum_model.nim
+examples/forum/forumclient.nim
+examples/forum/forum
+examples/forum/forumproto
+examples/tweeter/src/createdatabase
+examples/tweeter/src/tweeterdeps/
+deps/
+nim.cfg
+.nimcache
+tests/tdb_utils

clients/nim/ormin/.travis.yml

@@ -0,0 +1,28 @@
+sudo: false
+language: c
+os: linux
+install:
+  - git clone https://github.com/nim-lang/nim
+  - cd nim
+  - git clone --depth 1 https://github.com/nim-lang/csources.git
+  - cd csources
+  - sh build.sh
+  - cd ../
+  - bin/nim c koch
+  - ./koch boot -d:release
+  - ./koch tools
+  - cd ..
+before_script:
+  - set -e
+  - export PATH=$(pwd)/nim/bin:$(pwd):$PATH
+script:
+  - nimble develop -y
+  - nim c tools/ormin_importer
+  - cd examples/forum
+  - ../../tools/ormin_importer forum_model.sql
+  - nim c forum.nim
+  - nim c forumproto.nim
+  - cd ../..
+  - cd examples/chat
+  - ../../tools/ormin_importer chat_model.sql
+  - nim c server.nim

clients/nim/ormin/README-baradb.md

@@ -0,0 +1,147 @@
+# Ormin + BaraDB
+
+This is a fork of [Ormin](https://github.com/Araq/ormin) (prepared SQL statement generator for Nim) with added support for **BaraDB** — a multimodal database engine with a binary wire protocol.
+
+## What changed?
+
+- Added `DbBackend.baradb` to the backend enum.
+- Added `ImportTarget.baradb` for schema import.
+- New backend file `ormin/ormin_baradb.nim` that bridges Ormin's compile-time query DSL to the BaraDB Nim client (`baradb/client`).
+
+## Installation
+
+Install both the BaraDB client and this Ormin fork:
+
+```bash
+# Install BaraDB client (from barabadb/clients/nim)
+cd clients/nim
+nimble install
+
+# Install Ormin with BaraDB support
+cd ormin
+nimble install
+```
+
+## Quick Start
+
+### 1. Write your schema
+
+Create a file named `model.sql`:
+
+```sql
+CREATE TABLE users (
+  id SERIAL PRIMARY KEY,
+  name VARCHAR(255) NOT NULL,
+  email VARCHAR(255),
+  age INT
+);
+```
+
+### 2. Use Ormin DSL in Nim
+
+```nim
+import json
+import ormin
+
+importModel(DbBackend.baradb, "model")
+
+let db {.global.} = open("127.0.0.1:9472", "admin", "", "default")
+
+# Select tuples
+proc listUsers() =
+  let rows = query:
+    select users(id, name, email)
+    orderby id
+  for r in rows:
+    echo "User #", r.id, ": ", r.name
+
+# Parameterized query
+proc findUser(name: string) =
+  let row = query:
+    select users(id, name, email)
+    where name == ?name
+    limit 1
+  echo row
+
+# Insert
+proc addUser(name, email: string; age: int) =
+  query:
+    insert users(name = ?name, email = ?email, age = ?age)
+
+# JSON output
+proc usersAsJson(): seq[JsonNode] =
+  result = query:
+    select users(id, name)
+    produce json
+
+when isMainModule:
+  listUsers()
+```
+
+Compile with:
+
+```bash
+nim c -r myapp.nim
+```
+
+## Connection string format
+
+`open(host:port, username, password, database)`
+
+```nim
+let db = open("127.0.0.1:9472", "admin", "", "default")
+```
+
+If you omit the port, the default `9472` is used.
+
+## Supported Ormin features
+
+| Feature             | Status |
+|---------------------|--------|
+| `select`            | ✅     |
+| `where`             | ✅     |
+| `join` / `leftjoin` | ✅     |
+| `insert`            | ✅     |
+| `update`            | ✅     |
+| `delete`            | ✅     |
+| `orderby`           | ✅     |
+| `limit` / `offset`  | ✅     |
+| `?` placeholders    | ✅     |
+| `%` JSON params     | ✅     |
+| `produce json`      | ✅     |
+| `query(T)` typed    | ✅     |
+| `createProc`        | ✅     |
+| `createIter`        | ✅     |
+| `transaction`       | ✅ (top-level only) |
+| `returning`         | ❌ (not yet supported by BaraDB server) |
+
+## Limitations
+
+- **Wire protocol strings**: BaraDB returns all column values as strings over the wire. The backend parses them at runtime. This is slightly less efficient than native SQLite/PostgreSQL bindings but keeps the implementation simple and portable.
+- **`getLastId` / `RETURNING`**: BaraDB's SQL parser recognizes `RETURNING`, but the executor ignores it — the result is always just the affected-row count. For now, use a `limit 1` `select` after `insert` to fetch the new row.
+- **Nested transactions (SAVEPOINT)**: Not supported by BaraDB. Top-level `BEGIN` / `COMMIT` / `ROLLBACK` work fine, but nested `transaction:` blocks (which Ormin implements via `SAVEPOINT`) will fail.
+- **Async**: Ormin's DSL is synchronous by design. This backend uses `SyncClient` under the hood. If you need async, use the raw `baradb/client` async API directly.
+
+## Why some features are missing
+
+These are **server-side limitations**, not client bugs:
+
+| Feature | Status in BaraDB server | Needed for |
+|---------|------------------------|------------|
+| `SAVEPOINT` | Not implemented | Nested `transaction:` blocks |
+| `RETURNING` | Parsed but ignored by executor | `insert ... returning id` |
+
+If you need these, open an issue on the [BaraDB server repo](https://git.invoicing.top/baraba/Baradb) — the fixes belong in `src/barabadb/query/executor.nim` and `src/barabadb/query/parser.nim`.
+
+## Running the example
+
+```bash
+cd clients/nim/ormin/examples
+nim c -r baradb_basic.nim
+```
+
+*(Requires a BaraDB server on `localhost:9472`.)*
+
+## License
+
+Same as upstream Ormin — MIT.

clients/nim/ormin/README.md

@@ -0,0 +1,473 @@
+# ormin
+
+Prepared SQL statement generator for Nim. A lightweight ORM.
+
+Features:
+
+- Compile time query checking: Types as well as table
+  and column names are checked, no surprises at runtime!
+- Automatic join generation: Ormin knows the table
+  relations and can compute the "natural" join for you!
+- Nim based DSL for queries: No syntax errors at runtime,
+  no SQL injections possible.
+- Generated prepared statements: As fast as low level
+  hand written API calls!
+- First class JSON support: No explicit conversions
+  from rows to JSON objects required.
+
+TODO:
+
+- Better support for complex nested queries.
+- Write mysql backend.
+
+
+## Schema and Database Setup
+
+1. **Generate a model from SQL** – Place your schema in an `.sql` file and import it using `importModel`. By default this runs `ormin_importer` and includes the generated Nim code. Pass `includeStatic = true` to generate the model directly at compile time from the SQL file instead.
+2. **Create a database connection** – Ormin expects a global connection named `db` when issuing queries. The library ships drivers for SQLite and PostgreSQL; pick the matching backend in `importModel` and open a connection with Nim's database modules.
+
+### Static Schema
+
+The SQL file can be easily embedded at compile time. Import `ormin/db_utils` and use `const mySql = staticLoad("schema.sql")`, which returns a distinct string type `DbSql` after running sanity-checks the SQL. Pass that const `DbSql` to `createTable` / `dropTable` overloads:
+
+```nim
+import ormin/db_utils
+
+const schema = staticLoad("model.sql")
+
+db.createTable(schema)
+db.createTable(schema, "quoted table")
+db.dropTable(schema)
+db.dropTable(schema, "quoted table")
+```
+
+If you already use `importModel`, you can opt into the same static path directly there. `includeStatic = true` skips the generated `.nim` file, builds the model metadata from the `.sql` file at compile time, and exposes `sqlSchema` automatically:
+
+```nim
+import ../ormin
+importModel(DbBackend.sqlite, "model_sqlite", includeStatic = true)
+
+db.createTable(sqlSchema)
+db.dropTable(sqlSchema, "tb_timestamp")
+```
+
+### SQLite
+
+```nim
+import ../ormin
+importModel(DbBackend.sqlite, "model_sqlite")
+let db {.global.} = open(":memory:", "", "", "")
+```
+
+Note: Ormin now properly handles quoted table names in `dropTable`. The compile flag `-d:orminLegacySqliteDropNames` restores that older drop-table behavior by using the normalized lookup name instead of the preserved SQL identifier. The old behavior only worked in SQlite, not Postgres.
+
+### PostgreSQL
+
+```nim
+import postgres
+import ../ormin
+importModel(DbBackend.postgre, "model_postgre")
+let db {.global.} = open("localhost", "user", "password", "dbname")
+```
+
+### BaraDB
+
+```nim
+import ormin
+importModel(DbBackend.baradb, "model_baradb")
+let db {.global.} = open("127.0.0.1:9472", "admin", "", "default")
+```
+
+## Query DSL
+
+`query:` blocks are turned into prepared statements at compile time. Placeholders use `?` for Nim values and `%` for JSON values; Ormin chooses JSON instead of an ad-hoc variant type so your data can flow straight from/into `JsonNode` trees. `!!` splices vendor-specific SQL fragments. Typical clauses such as `with`, `where`, joins, `orderby`, `groupby`, `limit`, `offset`, `exists`, `distinct`, window expressions, `union`/`intersect`/`except`, `returning`, and insert upserts via `onconflict` + (`donothing` or `doupdate`) are supported. Referring to columns from related tables can trigger **automatic join generation** based on foreign keys, reducing boilerplate joins.
+
+Example snippets:
+
+```nim
+# Select recent rows from a Messages table with a Nim parameter
+let recentMessages = query:
+  select Messages(content, creation, author)
+  orderby desc(creation)
+  limit ?maxMessages
+
+# Insert using Nim and JSON parameters
+let payload = %*{"dt2": %*"2023-10-01T00:00:00Z"}
+query:
+  insert tb_timestamp(dt1 = ?dt1, dt2 = %payload["dt2"])
+
+# Upsert on conflict (SQLite/PostgreSQL)
+query:
+  insert tb_nullable(id = ?id, note = ?note)
+  onconflict(id)
+  doupdate(note = ?note)
+
+# Conditional upsert update
+query:
+  insert tb_nullable(id = ?id, note = ?note)
+  onconflict(id)
+  doupdate(note = ?note)
+  where note != ?note
+
+# Ignore duplicates
+query:
+  insert tb_nullable(id = ?id, note = ?note)
+  onconflict(id)
+  donothing()
+
+# Note: plain INSERT ... VALUES does not support `where`; use `onconflict(...)+doupdate(...)+where ...`
+
+# Explicit join with filter
+let rows = query:
+  select Post(author)
+  leftjoin Person(name) on author == id
+  where id == ?postId
+
+# Automatic join generated from foreign keys
+let postsWithAuthors = query:
+  select Post(title)
+  join Author(name)
+  where author.name == ?userName
+
+# DISTINCT queries and COUNT(DISTINCT ...)
+let authorIds = query:
+  select `distinct` Post(author)
+let authorCount = query:
+  select Post(count(distinct author))
+
+# NULL predicates use `nil` or `null`
+let unassigned = query:
+  select Ticket(id)
+  where assignee == nil
+
+# Pattern matching uses backticked infix operators
+let matchingPeople = query:
+  select Person(id, name)
+  where name `like` ?"john%"
+
+# EXISTS / NOT EXISTS subqueries
+let peopleWithPosts = query:
+  select Person(id)
+  where exists(select Post(id) where author == ?personId)
+
+# CTEs use with cteName(select ...)
+let recentAuthors = query:
+  with recent(select Post(id, author) where id <= 3)
+  select recent(author)
+
+# Window functions use over(expr, ...)
+let rankedPosts = query:
+  select Post(author, id, over(row_number(), partitionby(author), orderby(id)) as rn)
+
+# Set operations can be written inline between select queries
+let mergedIds = query:
+  select Person(id) where id <= 2
+  union
+  select Person(id) where id >= 4
+
+# Multiple joins with pagination
+let page = query:
+  select Post(title)
+  join Person(name) on author == id
+  join Category(title) on category == id
+  orderby desc(post.creation)
+  limit 5 offset 10
+
+# Vendor-specific function via raw SQL splice
+query:
+  update Users(lastOnline = !!"DATETIME('now')")
+  where id == ?userId
+```
+
+Compile with `-d:debugOrminSql` to see the produced SQL at build time, which helps when experimenting with the DSL.
+
+`tryQuery` executes a query but ignores database errors. `createProc` and `createIter` wrap a `query` block into a callable method on `db` for reuse.
+
+### Select and Joins
+
+Selecting columns for the primary table is done using the syntax `select Post(title, author, ...)` where `Post` is the table and `title`, `author`, etc are columns of that table. This will return a tuple containing `(title, author, ...)`. Only one table can be selected and columns must be from that table. Unlike in SQL, columns for joined tables are selected directly in the `join` syntax.
+
+Joins use the syntax `join Person(name, city) on author == id` where `Person` is the table and the columns `name`, and `city` are columns of that table. Often the join condition can be inferred from foreign keys and can be left out: `join Author(name, city)`. The columns listed in the joined tabled will be appended to the results tuple, i.e. `(title, author, name, city)`. Supported joins are: `join`, `innerjoin`, `leftjoin`, `leftouterjoin`, `rightjoin`, `rightouterjoin`, `fulljoin`, `fullouterjoin`, `crossjoin`, and the legacy `outerjoin`. Runtime support for `rightjoin` / `fulljoin` still depends on the SQL backend.
+
+The join syntax differs from SQL but simplifies selecting fields from multiple tables by making them more explicit while still maintaing SQL's full query capabilities.
+
+### Return Types
+
+The core return type for queries is a sequence of tuples where the tuples fields are the types of the columns. Some queries with `returning` or `limit` clauses will return singular values or raise a DbError.
+
+- Selecting multiple columns returns a sequence of tuples of the inferred Nim types.
+- Selecting a single column produces a sequence of that Nim type, e.g. `let names: seq[string] = query: select person(name)`.
+- `produce json` emits `JsonNode` objects instead of Nim tuples; `produce nim` forces standard Nim results.
+- `returning` or `limit 1` make the query return a single value or tuple instead of a sequence.
+- Generated procedures/iterators return the same types as the underlying query (see `createProc`/`createIter` tests).
+
+Examples:
+
+```nim
+# Sequence of tuples
+let threads = query:
+  select thread(id, name)
+
+# Sequence of simple Nim types
+let ids = query:
+  select thread(id)
+
+# JSON result
+let threadJson = query:
+  select thread(id, name)
+  produce json
+
+# Force Nim tuple even if `produce json` was used earlier
+let threadNim = query:
+  select thread(id, name)
+  produce nim
+```
+
+Single tuples or values can be returned in some cases:
+
+```nim
+# Single value returning
+let newId = query:
+  insert thread(name = ?"topic")
+  returning id
+
+# Single row value returning when limit is a const `1`
+let newId = query:
+  select thread(name = ?"topic")
+  orderby desc(trhead.id)
+  limit 1
+```
+
+**Note**: use an integer arg to limit to return a sequence instead!
+
+```nim
+let n = 1
+let newId = query:
+  select thread(name = ?"topic")
+  orderby desc(trhead.id)
+  limit ?n
+
+```
+
+### Typed Queries
+
+Use `query(T):` when you want Ormin to deserialize selected columns directly into a named Nim type instead of returning the default tuple shape. This is useful at module boundaries where a named object, ref object, or scalar domain type is clearer than a tuple.
+
+For object results, selected column names must match fields on the destination type. Use `as` aliases when the database column name differs from the Nim field name:
+
+```nim
+type
+  ThreadSummary = object
+    id: int
+    title: string
+
+let threads = query(ThreadSummary):
+  select thread(id, name as title)
+  orderby id
+```
+
+Selecting one column can map directly to a scalar type:
+
+```nim
+let names = query(string):
+  select thread(name)
+```
+
+Queries that return a single row, such as a `limit 1` query, return one `T` instead of `seq[T]`:
+
+```nim
+let thread = query(ThreadSummary):
+  select thread(id, name as title)
+  where id == ?threadId
+  limit 1
+```
+
+#### `fromQueryHook` Column Hooks
+
+Typed queries deserialize each selected column through `fromQueryHook`. You can overload this hook for your own field or scalar destination types:
+
+```nim
+import ormin/query_hooks
+
+type
+  TitleLength = distinct int
+
+  ThreadTitleSize = object
+    id: int
+    title: TitleLength
+
+proc fromQueryHook*(val: var TitleLength, value: string) =
+  val = TitleLength(value.len)
+
+let rows = query(ThreadTitleSize):
+  select thread(id, name as title)
+```
+
+If a hook needs to handle SQL `NULL` itself, accept a `DbValue[SourceType]`:
+
+```nim
+type
+  NullableTitle = distinct string
+
+proc fromQueryHook*(val: var NullableTitle, value: DbValue[string]) =
+  if value.isNull:
+    val = NullableTitle("<untitled>")
+  else:
+    val = NullableTitle(value.value)
+```
+
+These are column deserialization hooks. In object typed queries, Ormin calls `fromQueryHook` separately for each selected column that maps to a destination field; it does not currently call a hook for the entire row object. For whole-row transformations, query into an intermediate typed result and convert it in regular Nim code.
+
+### JSON and Raw SQL
+
+JSON values can be spliced directly using `%` expressions. The `%` prefix tells Ormin to treat the following Nim expression as a `JsonNode` without conversion:
+
+```nim
+import json
+let payload = %*{"id": %*1, "meta": %*{"tags": %*["nim", "orm"]}}
+
+# Use JSON in WHERE clause
+let rows = query:
+  select post(id, title)
+  where id == %payload["id"]
+  produce json
+
+# Insert a row using JSON fields
+query:
+  insert post(id = %payload["id"], title = %payload["title"], info = %payload["meta"])
+```
+
+`!!"RAW"` injects a literal SQL fragment for vendor-specific functions or clauses that Ormin does not know about:
+
+```nim
+query:
+  update users(lastOnline = !!"DATETIME('now')")
+  where id == ?userId
+```
+
+The tests include additional samples of JSON parameters and raw SQL expressions.
+
+### Custom SQL Functions
+
+Use the `{.importSql.}` pragma to tell Ormin about additional SQL functions that your database provides. Declare a Nim proc or func that mirrors the SQL signature and mark it with the pragma; the declaration does not need an implementation because Ormin only uses it to register the function for the query DSL.
+
+```nim
+proc substr(s: string; start, length: int): string {.importSql.}
+
+let name = "foo"
+let rows = query:
+  select tb_string(substr(typstring, 1, 5))
+  where substr(typstring, 1, 5) == ?name
+```
+
+Imported functions participate in compile-time checking for arity and return type so they can be composed with regular Ormin expressions.
+
+**Limitation:** argument types are currently not validated, so using mismatched parameter types still compiles—ensure the arguments you pass match what the underlying SQL function expects.
+
+## Transactions and Batching
+
+Use `transaction:` to run multiple queries atomically. The block commits on success and rolls back on any exception. Nesting is supported via savepoints. `tryTransaction:` behaves the same but returns `bool` (false on database errors) without raising.
+
+Examples:
+
+```nim
+# Commit on success
+transaction:
+  query:
+    insert person(id = ?(1), name = ?"alice", password = ?"p", email = ?"a@x", salt = ?"s", status = ?"ok")
+  query:
+    update thread(views = views + 1)
+    where id == ?(42)
+
+# Rollback on error
+let ok = tryTransaction:
+  query:
+    insert person(id = ?(2), name = ?"bob", password = ?"p", email = ?"b@x", salt = ?"s", status = ?"ok")
+  # Primary key violation => entire block is rolled back, ok = false
+  query:
+    insert person(id = ?(2), name = ?"duplicate", password = ?"p", email = ?"d@x", salt = ?"s", status = ?"x")
+
+# Nested transactions via savepoints
+transaction:
+  query:
+    insert person(id = ?(3), name = ?"carol", password = ?"p", email = ?"c@x", salt = ?"s", status = ?"ok")
+  let innerOk = tryTransaction:
+    # This will fail and roll back to the savepoint
+    query:
+      insert person(id = ?(3), name = ?"duplicate", password = ?"p", email = ?"d@x", salt = ?"s", status = ?"x")
+  doAssert innerOk == false
+  # Continue outer transaction normally
+```
+
+PostgreSQL and SQLite are supported. The macros use `BEGIN/COMMIT/ROLLBACK` for the outermost transaction and `SAVEPOINT/RELEASE/ROLLBACK TO` for nested scopes. 
+
+## Reusable Procedures and Iterators
+
+`createProc` turns a query into a procedure that returns all rows at once:
+
+```nim
+createProc postsByAuthor:
+  select post(id, title)
+  where author == ?userId
+
+let posts = db.postsByAuthor(userId)
+```
+
+`createIter` emits an iterator that yields rows lazily:
+
+```nim
+createIter postsIter:
+  select post(id, title)
+  where author == ?userId
+
+for row in db.postsIter(userId):
+  echo row.title
+```
+
+Both forms accept parameters matching the `?`/`%` placeholders and produce the same return types as an inline `query` block.
+
+Inline `query` blocks resolve `db` from the current lexical scope, so a proc parameter or local `db` binding can override the global connection when needed. This is useful for making procs which need to do complex handling:
+
+```nim
+proc loadUser(db: DbConn; userId: int): User =
+  let row = query:
+    select user(id, name, email)
+    where id == ?userId
+    limit 1
+
+  User(id: row.id, name: row.name, email: row.email)
+```
+
+## Running Arbitrary SQL
+
+The standard `db_connector` APIs can be imported and used. For example:
+
+```nim
+discard db.getValue(sql"select setval('antibot_id_seq', 10, false)")
+```
+
+## Additional Facilities
+
+- **Protocol DSL** – The `protocol` macro lets you describe paired server/client handlers that communicate via JSON messages. Sections use keywords like `recv`, `broadcast` and `send`, and every server block must be mirrored by a client block. The chat example demonstrates this code generation.
+- **JSON Dispatcher** – `createDispatcher` constructs a dispatcher for textual commands mapped to Nim procedures.
+- **WebSocket Server** – `serverws` provides a small WebSocket server that can broadcast messages to selected receivers via the `serve` proc.
+
+## Tooling
+
+The repository ships with `tools/ormin_importer`, used by the default `importModel` path, to parse SQL schema files into Nim type information and write the generated `.nim` model file.
+
+## Examples
+
+The `examples/` directory contains small applications (chat, forum, tweeter) demonstrating schema import, query blocks and the protocol/WebSocket features.
+
+## Testing
+
+Run the full test suite via Nimble:
+
+```bash
+nimble test
+```
+
+## License
+
+Ormin is released under the MIT license.

clients/nim/ormin/config.nims

@@ -0,0 +1,47 @@
+switch("nimcache", ".nimcache")
+
+task buildimporter, "Build ormin_importer":
+  exec "nim c -o:./tools/ormin_importer tools/ormin_importer"
+
+task clean, "Clean generated files":
+  rmFile("tests/forum_model_sqlite.nim")
+  rmFile("tests/model_sqlite.nim")
+
+  rmFile("tests/forum_model_postgres.nim")
+  rmFile("tests/model_postgre.nim")
+
+task test, "Run all test suite":
+  buildimporterTask()
+  cleanTask()
+
+  exec "nim c -f -r tests/tfeature"
+  exec "nim c -f -r tests/tcommon"
+  exec "nim c -f -r -d:release tests/tquery_types"
+  exec "nim c -f -r tests/tsqlite"
+  exec "nim c -f -r tests/tdb_utils"
+  exec "nim c -f -r tests/timportstatic"
+
+task setup_postgres, "Ensure local Postgres has test DB/user":
+  # Use a simple script to avoid Nim/psql quoting pitfalls
+  exec "bash -lc 'bash tools/setup_postgres.sh'"
+
+task test_postgres, "Run PostgreSQL test suite":
+  cleanTask()
+  buildimporterTask()
+  # setup_postgresTask()
+  # Pre-generate Postgres models to avoid include timing issues
+  exec "./tools/ormin_importer tests/forum_model_postgres.sql"
+  exec "./tools/ormin_importer tests/model_postgre.sql"
+
+  exec "nim c -f -d:nimDebugDlOpen -r -d:postgre tests/tfeature"
+  exec "nim c -f -d:nimDebugDlOpen -r -d:postgre tests/tcommon"
+  exec "nim c -f -d:nimDebugDlOpen -r -d:release -d:postgre tests/tquery_types"
+  exec "nim c -f -d:nimDebugDlOpen -r -d:postgre tests/tpostgre"
+
+task buildexamples, "Build examples: chat and forum":
+  buildimporterTask()
+  selfExec "c examples/chat/server"
+  selfExec "js examples/chat/frontend"
+  selfExec "c examples/forum/forum"
+  selfExec "c examples/forum/forumproto"
+  selfExec "c examples/tweeter/src/tweeter"

clients/nim/ormin/docker/entrypoint.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+set -eu
+
+# Ormin + BaraDB Dev Entrypoint
+# Handles dependency installation and optional example compilation.
+
+DEPS_FLAG="/workspace/.deps-installed"
+
+# Install dependencies once
+if [ ! -f "$DEPS_FLAG" ]; then
+    echo "[ormin-dev] Installing BaraDB client..."
+    cd /workspace/baradb
+    nimble install -y
+
+    echo "[ormin-dev] Installing Ormin dependencies..."
+    cd /workspace/ormin
+    nimble install -y
+
+    touch "$DEPS_FLAG"
+    echo "[ormin-dev] Dependencies ready."
+fi
+
+# If no arguments, drop to shell
+if [ $# -eq 0 ]; then
+    exec bash
+fi
+
+# Otherwise run the provided command
+exec "$@"

clients/nim/ormin/examples/baradb_basic.nim

@@ -0,0 +1,35 @@
+## Basic Ormin + BaraDB example
+##
+## Run with:
+##   nim c -r examples/baradb_basic.nim
+##
+## Requires a BaraDB server on localhost:9472.
+
+import ormin
+
+importModel(DbBackend.baradb, "baradb_model")
+
+let db {.global.} = open("127.0.0.1:9472", "admin", "", "default")
+
+proc listUsers() =
+  let rows = query:
+    select users(id, name, email)
+    orderby id
+  for r in rows:
+    echo "User #", r.id, ": ", r.name, " <", r.email, ">"
+
+proc findUserByName(name: string) =
+  let row = query:
+    select users(id, name, email)
+    where name == ?name
+    limit 1
+  echo "Found: ", row
+
+proc insertUser(name, email: string; age: int) =
+  query:
+    insert users(name = ?name, email = ?email, age = ?age)
+
+when isMainModule:
+  listUsers()
+  findUserByName("alice")
+  insertUser("bob", "bob@example.com", 30)

clients/nim/ormin/examples/baradb_model.sql

@@ -0,0 +1,6 @@
+CREATE TABLE users (
+  id SERIAL PRIMARY KEY,
+  name VARCHAR(255) NOT NULL,
+  email VARCHAR(255),
+  age INT
+);

clients/nim/ormin/examples/chat/chat_model.sql

@@ -0,0 +1,19 @@
+create table if not exists users(
+  id integer primary key,
+  name varchar(20) not null,
+  password varchar(32) not null,
+  creation timestamp not null default (DATETIME('now')),
+  lastOnline timestamp not null default (DATETIME('now'))
+);
+
+/* Names need to be unique: */
+create unique index if not exists UserNameIx on users(name);
+
+create table if not exists messages(
+  id integer primary key,
+  author integer not null,
+  content varchar(1000) not null,
+  creation timestamp not null default (DATETIME('now')),
+
+  foreign key (author) references users(id)
+);

clients/nim/ormin/examples/chat/createdb.nim

@@ -0,0 +1,9 @@
+import strutils, db_sqlite
+
+var db = open(connection="chat.db", user="araq", password="",
+              database="chat")
+let model = readFile("chat_model.sql")
+for m in model.split(';'):
+  if m.strip != "":
+    db.exec(sql(m), [])
+db.close()

clients/nim/ormin/examples/chat/frontend.nim

@@ -0,0 +1,92 @@
+## Frontend for our chat application example.
+## You need to have 'karax' installed in order for this to work.
+
+import karax / [kbase, karax, vdom, karaxdsl, kajax, jwebsockets, jjson,
+                jstrutils, errors]
+
+# Custom UI element with input validation:
+
+proc validateNotEmpty(field: kstring): proc () =
+  result = proc () =
+    let x = getVNodeById(field)
+    if x.text.isNil or x.text == "":
+      setError(field, field & " must not be empty")
+    else:
+      setError(field, "")
+
+proc loginField(desc, field, class: kstring;
+                validator: proc (field: kstring): proc ()): VNode =
+  result = buildHtml(tdiv):
+    label(`for` = field):
+      text desc
+    input(`type` = class, id = field, onchange = validator(field))
+
+# here we setup the connection to the server:
+let conn = newWebSocket("ws://localhost:8080", "orminchat")
+
+proc send(msg: JsonNode) =
+  # The Ormin "protocol" requires us to have 'send' implementation.
+  conn.send(toJson(msg))
+
+type User* = ref object
+  name*, password: kstring
+
+const
+  username = kstring"username"
+  password = kstring"password"
+  message = kstring"message"
+
+# Include the 'chatclient' helper that Ormin produced for us:
+include chatclient
+
+template loggedIn(): bool = userId > 0
+
+proc doLogin() =
+  registerUser(User(name: getVNodeById(username).text,
+                password: getVNodeById(password).text))
+
+proc doSendMessage() =
+  let inputField = getVNodeById(message)
+  sendMessage(TextMessage(author: userId, content: inputField.text))
+  inputField.setInputText ""
+
+proc registerOnUpdate() =
+  conn.onmessage =
+    proc (e: MessageEvent) =
+      let msg = fromJson[JsonNode](e.data)
+      # 'recvMsg' was generated for us:
+      recvMsg(msg)
+      karax.redraw()
+
+proc main(): VNode =
+  result = buildHtml(tdiv):
+    tdiv:
+      if not loggedIn:
+        loginField("Name :", username, "input", validateNotEmpty)
+        loginField("Password: ", password, "password", validateNotEmpty)
+        button(onclick = doLogin, disabled = disableOnError()):
+          text "Login"
+        p:
+          text getError(username)
+        p:
+          text getError(password)
+    tdiv:
+      table:
+        for m in allMessages:
+          tr:
+            td:
+              bold:
+                text m.name
+            td:
+              text m.content
+    tdiv:
+      if loggedIn:
+        label(`for` = message):
+          text "Message: "
+        input(class = "input", id = message, onkeyupenter = doSendMessage)
+
+registerOnUpdate()
+runLater proc() =
+  getRecentMessages()
+
+setRenderer(main)

clients/nim/ormin/examples/chat/server.nim

@@ -0,0 +1,96 @@
+import ../../ormin / [serverws]
+import ../../ormin
+
+import json
+
+# Ormin needs to know about our SQL model:
+importModel(DbBackend.sqlite, "chat_model")
+
+# Currently Ormin assumes a global database connection that needs to be
+# annotated as '.global' for technical reasons. Later versions will improve.
+var db {.global.} = open("chat.db", "", "", "")
+
+# Ormin produces the file "chatclient.nim" for our frontend:
+protocol "chatclient.nim":
+  # A 'common' code section is shared by both the client and the server:
+  common:
+    when not defined(js):
+      type kstring = string
+    type
+      inetType = kstring
+      varcharType = kstring
+      timestampType = kstring
+      intType = int
+
+
+  server "get recent messages":
+    let lastMessages = query:
+      select messages(content, creation, author)
+      join users(name)
+      orderby desc(creation)
+      limit 100
+    send(lastMessages)
+
+  client "get recent messages":
+    type TextMessage* = ref object
+    # Ormin fills in the fields of 'TextMessage' for us, based on the
+    # query in the 'server' part.
+    var allMessages*: seq[TextMessage] = @[]
+    proc getRecentMessages*()
+    allMessages = recv()
+
+
+  server "send chat message":
+    let userId = arg["author"].num
+    # unregistered users cannot send anything:
+    if userId == 0: return
+    query:
+      insert messages(content = %arg["content"], author = ?userId)
+    query:
+      update users(lastOnline = !!"DATETIME('now')")
+      where id == ?userId
+
+    let lastMessage = query:
+      select messages(content, creation, author)
+      join users(name)
+      orderby desc(creation)
+      limit 1
+
+    broadcast(lastMessage)
+
+  client "send chat message":
+    proc sendMessage*(m: TextMessage)
+    allMessages.add recv(TextMessage)
+
+
+  # This is the request to register/login a new user:
+  server "register/login a new user":
+    var candidates = query:
+      produce nim
+      select users(id, password)
+      where name == %arg["name"]
+    if candidates.len == 0:
+      let userId = query:
+        produce nim
+        insert users(name = %arg["name"], password = %arg["password"])
+        returning id
+      send(%userId)
+    else:
+      block search:
+        for c in candidates:
+          if c[1] == arg["password"].str:
+            send(%c[0])
+            echo "login found!"
+            break search
+        # invalid login:
+        send(%0)
+        echo "no such user!"
+
+  client "register/login a new user":
+    proc registerUser*(u: User)
+    var userId: int
+    userId = recv()
+    if userId == 0: setError(username, "invalid login!")
+
+
+serve "orminchat", dispatch

clients/nim/ormin/examples/chat/server.nims

@@ -0,0 +1,2 @@
+--define: ssl
+--path:"$projectDir/../../../ormin"

clients/nim/ormin/examples/forum/config.nims

@@ -0,0 +1,2 @@
+--define: ssl
+--path:"$projectDir/../../../ormin"

clients/nim/ormin/examples/forum/forum.nim

@@ -0,0 +1,160 @@
+import ../../ormin, json
+
+importModel(DbBackend.sqlite, "forum_model")
+
+var db {.global.} = open("stuff", "", "", "")
+
+#var db: DbConn
+#proc getPrepStmt(idx: int): PStmt
+
+#var gPrepStmts: array[N, cstring]
+
+type inetType = string
+
+const
+  id = 90
+  ip = "moo"
+  answer = "dunno"
+  pw = "mypw"
+  email = "some@body.com"
+  salt = "pepper"
+  name = "me"
+  limit = 10
+  offset = 5
+
+let threads = query:
+  select thread(id, name, views, modified)
+  where id in (select post(thread) where author in
+      (select person(id) where status notin ("Spammer") or id == ?id))
+  orderby desc(modified)
+  limit ?limit
+  offset ?offset
+
+let thisThread = tryQuery:
+  select thread(id)
+  where id == ?id
+
+createIter allThreadIds:
+  select thread(id)
+  where id == ?id
+
+query:
+  delete antibot
+  where ip == ?ip
+
+query:
+  insert antibot(?ip, ?answer)
+
+let something = query:
+  select antibot(answer & answer, (if ip == "hi": 0 else: 1))
+  where ip == ?ip and answer =~ "%things%"
+  orderby desc(ip)
+  limit 1
+
+let myNewPersonId: int = query:
+  insert person(?name, password = ?pw, ?email, ?salt, status = !!"'EmailUnconfirmed'",
+         lastOnline = !!"DATETIME('now')")
+  returning id
+
+query:
+  delete session
+  where ip == ?ip and password == ?pw
+
+query:
+  update session(lastModified = !!"DATETIME('now')")
+  where ip == ?ip and password == ?pw
+
+let myj = %*{"pw": "stuff here"}
+
+let userId1 = query:
+  select session(userId)
+  where ip == ?ip and password == %myj["pw"]
+
+let (name9, email9, status, ban) = query:
+  select person(name, email, status, ban)
+  where id == ?id
+  limit 1
+
+let (idg, nameg, pwg, emailg, creationg, saltg, statusg, lastOnlineg, bang) = query:
+  select person(_)
+  where id == ?id
+  limit 1
+
+query:
+  update person(lastOnline = !!"DATETIME('now')")
+  where id == ?id
+
+query:
+  update thread(views = views + 1, modified = !!"DATETIME('now')")
+  where id == ?id
+
+query:
+  delete thread
+  where id notin (select post(thread))
+
+let (author, creation) = query:
+  select post(author)
+  join person(creation)
+  limit 1
+
+let (authorB, creationB) = query:
+  select post(author)
+  join person(creation) on author == id
+  limit 1
+
+let allPosts = query:
+  select post(count(_) as cnt)
+  where cnt > 0
+  produce json
+  limit 1
+
+createProc getAllThreadIds:
+  select thread(id)
+  where id == ?id
+  produce json
+
+let totalThreads = query:
+  select thread(count(_))
+  where id in (select post(thread) where author == ?id and id in (
+    select post(min(id)) groupby thread))
+  limit 1
+
+#query:
+#  update thread(modified = (select post(creation) where post.thread == ?thread
+#    orderby creation desc limit 1 ))
+
+#[
+  # Check if post is the first post of the thread.
+  let rows = db.getAllRows(sql("select id, thread, creation from post " &
+        "where thread = ? order by creation asc"), $c.threadId)
+
+  proc rateLimitCheck(c: var TForumData): bool =
+    sql("SELECT count(*) FROM post where author = ? and " &
+          "(strftime('%s', 'now') - strftime('%s', creation)) < 40")
+    sql("SELECT count(*) FROM post where author = ? and " &
+          "(strftime('%s', 'now') - strftime('%s', creation)) < 90")
+    sql("SELECT count(*) FROM post where author = ? and " &
+          "(strftime('%s', 'now') - strftime('%s', creation)) < 300")
+
+  sql "insert into thread(name, views, modified) values (?, 0, DATETIME('now'))"
+  sql "select id, name, password, email, salt, status, ban from person where name = ?"
+  sql "insert into session (ip, password, userid) values (?, ?, ?)",
+  sql"select password, salt, strftime('%s', lastOnline) from person where name = ?"
+  sql("delete from post where author = (select id from person where name = ?)")
+  sql("update person set status = ?, ban = ? where name = ?")
+  sql("update person set password = ?, salt = ? where name = ?")
+  sql"select count(*) from person"
+  sql"select count(*) from post"
+  sql"select count(*) from thread"
+  sql"select id, name, strftime('%s', lastOnline), strftime('%s', creation) from person"
+
+  sql"select count(*) from post where thread = ?"
+  sql"select count(*) from post p, person u where u.id = p.author and p.thread = ?"
+  sql"select name from thread where id = ?"
+  sql"select id from person where name = ?"
+  sql"select count(*) from post where author = ?"
+  sql("select count(*) from thread where id in (select thread from post where" &
+         " author = ? and post.id in (select min(id) from post group by thread))")
+  sql"""select strftime('%s', lastOnline), email, ban, status
+            from person where id = ?"""
+]#

clients/nim/ormin/examples/forum/forum_model.sql

@@ -0,0 +1,55 @@
+
+create table if not exists thread(
+  id integer primary key,
+  name varchar(100) not null,
+  views integer not null,
+  modified timestamp not null default (DATETIME('now'))
+);
+
+create unique index if not exists ThreadNameIx on thread (name);
+
+create table if not exists person(
+  id integer primary key,
+  name varchar(20) not null,
+  password varchar(32) not null,
+  email varchar(30) not null,
+  creation timestamp not null default (DATETIME('now')),
+  salt varchar(128) not null,
+  status varchar(30) not null,
+  lastOnline timestamp not null default (DATETIME('now')),
+  ban varchar(128) not null default ''
+);
+
+create unique index if not exists UserNameIx on person (name);
+
+create table if not exists post(
+  id integer primary key,
+  author integer not null,
+  ip inet not null,
+  header varchar(100) not null,
+  content varchar(1000) not null,
+  thread integer not null,
+  creation timestamp not null default (DATETIME('now')),
+
+  foreign key (thread) references thread(id),
+  foreign key (author) references person(id)
+);
+
+create table if not exists session(
+  id integer primary key,
+  ip inet not null,
+  password varchar(32) not null,
+  userid integer not null,
+  lastModified timestamp not null default (DATETIME('now')),
+  foreign key (userid) references person(id)
+);
+
+create table if not exists antibot(
+  id integer primary key,
+  ip inet not null,
+  answer varchar(30) not null,
+  created timestamp not null default (DATETIME('now'))
+);
+
+create index PersonStatusIdx on person(status);
+create index PostByAuthorIdx on post(thread, author);

clients/nim/ormin/examples/forum/forumproto.nim

@@ -0,0 +1,37 @@
+import ../../ormin, ../../ormin/serverws, json
+
+importModel(DbBackend.sqlite, "forum_model")
+
+var db {.global.} = open("stuff", "", "", "")
+
+protocol "forumclient.nim":
+  common:
+    when defined(js):
+      type kstring = cstring
+    else:
+      type kstring = string
+    type
+      inetType = kstring
+      varcharType = kstring
+      timestampType = kstring
+  server:
+    query:
+      delete antibot
+      where ip == %arg
+  client:
+    proc deleteAntibot(ip: string)
+  server:
+    query:
+      update session(lastModified = !!"DATETIME('now')")
+      where ip == %arg["ip"] and password == %arg["pw"]
+  client:
+    proc updateSession(arg: Session)
+  server:
+    let allSessions = query:
+      select session(_)
+    send(allSessions)
+  client:
+    type Session = ref object
+    var gSessions: seq[Session]
+    gSessions = recv()
+    proc getAllSessions()

clients/nim/ormin/examples/tweeter/public/style.css

@@ -0,0 +1,117 @@
+body {
+    background-color: #f1f9ea;
+    margin: 0;
+    font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
+  }
+  
+  div#main {
+    width: 80%;
+    margin-left: auto;
+    margin-right: auto;
+  }
+  
+  div#user {
+    background-color: #66ac32;
+    width: 100%;
+    color: #c7f0aa;
+    padding: 5pt;
+  }
+  
+  div#user > h1 {
+    color: #ffffff;
+  }
+  
+  h1 {
+    margin: 0;
+    display: inline;
+    padding-left: 10pt;
+    padding-right: 10pt;
+  }
+  
+  div#user > form {
+    float: right;
+    margin-right: 10pt;
+  }
+  
+  div#user > form > input[type="submit"] {
+    border: 0px none;
+    padding: 5pt;
+    font-size: 108%;
+    color: #ffffff;
+    background-color: #515d47;
+    border-radius: 5px;
+    cursor: pointer;
+  }
+  
+  div#user > form > input[type="submit"]:hover {
+    background-color: #538c29;
+  }
+  
+  
+  div#messages {
+    background-color: #a2dc78;
+    width: 90%;
+    margin-left: auto;
+    margin-right: auto;
+    color: #1a1a1a;
+  }
+  
+  div#messages > div {
+    border-left: 1px solid #869979;
+    border-right: 1px solid #869979;
+    border-bottom: 1px solid #869979;
+    padding: 5pt;
+  }
+  
+  div#messages > div > a, div#messages > div > span {
+    color: #475340;
+  }
+  
+  div#messages > div > a:hover {
+    text-decoration: none;
+    color: #c13746;
+  }
+  
+  h3 {
+    margin-bottom: 0;
+    font-weight: normal;
+  }
+  
+  div#login {
+    width: 200px;
+    margin-left: auto;
+    margin-right: auto;
+    margin-top: 20%;
+  
+    font-size: 130%;
+  }
+  
+  div#login span.small {
+    display: block;
+    font-size: 56%;
+  }
+  
+  div#newMessage {
+    background-color: #538c29;
+    width: 90%;
+    margin-left: auto;
+    margin-right: auto;
+    color: #ffffff;
+    padding: 5pt;
+  }
+  
+  div#newMessage span {
+    padding-right: 5pt;
+  }
+  
+  div#newMessage form {
+    display: inline;
+  }
+  
+  div#newMessage > form > input[type="text"] {
+    width: 80%;
+  }
+  
+  div#newMessage > form > input[type="submit"] {
+    font-size: 80%;
+  }

clients/nim/ormin/examples/tweeter/readme.md

@@ -0,0 +1,3 @@
+# Tweeter example
+
+Modified from [tweeter example](https://github.com/dom96/nim-in-action-code/tree/master/Chapter7/Tweeter) in the "nim in action" book, replace the database layer with ormin.

clients/nim/ormin/examples/tweeter/src/config.nims

@@ -0,0 +1,2 @@
+--define: ssl
+--path:"$projectDir/../../../../ormin"

clients/nim/ormin/examples/tweeter/src/createdatabase.nim

@@ -0,0 +1,11 @@
+import db_sqlite, os, strutils
+
+let db {.global.} = open("tweeter.db", "", "", "")
+
+let sqlFile = readFile(currentSourcePath.parentDir() / "tweeter_model.sql")
+for t in sqlFile.split(';'):
+  if t.strip() != "":
+    db.exec(sql(t))
+
+echo("Database created successfully!")
+db.close()

clients/nim/ormin/examples/tweeter/src/database.nim

@@ -0,0 +1,51 @@
+import times, strutils, strformat, sequtils
+from db_connector/db_sqlite import instantRows, `[]`
+import ../../../ormin
+import model
+
+importModel(DbBackend.sqlite, "tweeter_model")
+var db {.global.} = open("tweeter.db", "", "", "")
+
+proc findUser*(username: string, user: var User): bool =
+  let res = query:
+    select user(username)
+    where username == ?username
+  echo res
+  if res.len == 0: return false
+  else: user.username = res[0]
+
+  let following = query:
+    select following(followed_user)
+    where follower == ?username
+  user.following = following.filterIt(it.len != 0)
+
+  return true
+
+proc create*(user: User) =
+  query:
+    insert user(username = ?user.username)
+
+proc post*(message: Message) =
+  if message.msg.len > 140:
+    raise newException(ValueError, "Message has to be less than 140 characters.")
+  query:
+    insert message(username = ?message.username,
+                   time = ?message.time,
+                   msg = ?message.msg)
+
+proc follow*(follower, user: User) =
+  query:
+    insert following(follower = ?follower.username, followed_user = ?user.username)
+
+proc findMessage*(usernames: openArray[string], limit = 10): seq[Message] =
+  result = @[]
+  if usernames.len == 0: return
+  var whereClause = "WHERE "
+  for i in 0 ..< usernames.len:
+    whereClause.add("trim(username) = ?")
+    if i < usernames.len - 1:
+      whereClause.add(" or ")
+
+  let s = &"SELECT username, time, msg FROM Message {whereClause} ORDER BY time DESC LIMIT {limit}"
+  for row in db.instantRows(sql(s), usernames):
+    result.add((username: row[0], time: row[1].parseInt, msg: row[2]))

clients/nim/ormin/examples/tweeter/src/model.nim

@@ -0,0 +1,11 @@
+type
+  User* = tuple[
+    username: string,
+    following: seq[string]
+  ]
+
+  Message* = tuple[
+    username: string,
+    time: int,
+    msg: string
+  ]

clients/nim/ormin/examples/tweeter/src/tweeter.nim

@@ -0,0 +1,59 @@
+import asyncdispatch, times
+import jester
+import database, model, views/[user, general]
+
+proc userLogin(request: Request, user: var User): bool =
+  if request.cookies.hasKey("username"):
+    let username = request.cookies["username"]
+    if not findUser(username, user):
+      user = (username: username, following: @[])
+      create(user)
+    return true
+  else:
+    return false
+
+routes:
+  get "/":
+    var user: User
+    if userLogin(request, user):
+      let messages = findMessage(user.following & user.username)
+      resp renderMain(renderTimeline(user.username, messages))
+    else:
+      resp renderMain(renderLogin())
+
+  get "/@name":
+    cond '.' notin @"name"
+    var user: User
+    if not findUser(@"name", user):
+      halt "User not found"
+    let messages = findMessage([user.username])
+
+    var currentUser: User
+    if userLogin(request, currentUser):
+      resp renderMain(renderUser(user, currentUser) & renderMessages(messages))
+    else:
+      resp renderMain(renderUser(user) & renderMessages(messages))
+
+  post "/follow":
+    var follower, target: User
+    if not findUser(@"follower", follower):
+      halt "Follower not found"
+    if not findUser(@"target", target):
+      halt "Follow target not found"
+    follow(follower, target)
+    redirect uri("/" & @"target")
+
+  post "/login":
+    setCookie("username", @"username", getTime().utc() + 2.hours)
+    redirect "/"
+
+  post "/createMessage":
+    let message = (
+      username: @"username",
+      time: getTime().toUnix().int,
+      msg: @"message"
+    )
+    post(message)
+    redirect "/"
+
+runForever()

clients/nim/ormin/examples/tweeter/src/tweeter_model.nim

@@ -0,0 +1,24 @@
+# Generated by ormin_importer. DO NOT EDIT.
+
+type
+  Attr = object
+    name: string
+    tabIndex: int
+    typ: DbTypekind
+    key: int   # 0 nothing special,
+               # +1 -- primary key
+               # -N -- references attribute N
+const tableNames = [
+  "user",
+  "following",
+  "message"
+]
+
+const attributes = [
+  Attr(name: "username", tabIndex: 0, typ: dbVarchar, key: 1),
+  Attr(name: "follower", tabIndex: 1, typ: dbVarchar, key: -1),
+  Attr(name: "followed_user", tabIndex: 1, typ: dbVarchar, key: -1),
+  Attr(name: "username", tabIndex: 2, typ: dbVarchar, key: -1),
+  Attr(name: "time", tabIndex: 2, typ: dbInt, key: 0),
+  Attr(name: "msg", tabIndex: 2, typ: dbVarchar, key: 0)
+]

clients/nim/ormin/examples/tweeter/src/tweeter_model.sql

@@ -0,0 +1,18 @@
+CREATE TABLE IF NOT EXISTS User(
+    username text PRIMARY KEY
+);
+
+CREATE TABLE IF NOT EXISTS Following(
+    follower text,
+    followed_user text,
+    PRIMARY KEY (follower, followed_user),
+    FOREIGN KEY (follower) REFERENCES User(username),
+    FOREIGN KEY (followed_user) REFERENCES User(username)
+);
+
+CREATE TABLE IF NOT EXISTS Message(
+    username text,
+    time integer,
+    msg text NOT NULL,
+    FOREIGN KEY (username) REFERENCES User(username)
+);

clients/nim/ormin/examples/tweeter/src/views/general.nim

@@ -0,0 +1,51 @@
+#? stdtmpl(subsChar = '$', metaChar = '#')
+#import xmltree
+#import ../model
+#import user
+#
+#proc `$!`(text: string): string = escape(text)
+#end proc
+#
+#proc renderMain*(body: string): string =
+#  result = ""
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Tweeter written in Nim</title>
+    <link rel="stylesheet" type="text/css" href="style.css">
+  </head>
+
+  <body>
+    ${body}
+  </body>
+
+</html>
+#end proc
+#
+#proc renderLogin*(): string =
+#  result = ""
+<div id="login">
+  <span>Login</span>
+  <span class="small">Please type in your username...</span>
+  <form action="login" method="post">
+    <input type="text" name="username">
+    <input type="submit" value="Login">
+  </form>
+</div>
+#end proc
+#
+#proc renderTimeline*(username: string, messages: openArray[Message]): string =
+#  result = ""
+<div id="user">
+  <h1>${$!username} timeline</h1>
+</div>
+<div id="newMessage">
+  <span>New message</span>
+  <form action="createMessage" method="post">
+    <input type="text" name="message">
+    <input type="hidden" name="username" value="${$!username}">
+    <input type="submit" value="Tweet">
+  </form>
+</div>
+${renderMessages(messages)}
+#end proc

clients/nim/ormin/examples/tweeter/src/views/user.nim

@@ -0,0 +1,41 @@
+#? stdtmpl(subsChar = '$', metaChar = '#', toString = "xmltree.escape")
+#import xmltree
+#import times
+#import "../model"
+#
+#proc renderUser*(user: User): string =
+#  result = ""
+<div id="user">
+  <h1>${user.username}</h1>
+  <span>Following: ${$user.following.len}</span>
+</div>
+#end proc
+#
+#proc renderUser*(user, currentUser: User): string =
+#  result = ""
+<div id="user">
+  <h1>${user.username}</h1>
+  <span>Following: ${$user.following.len}</span>
+  #if user.username notin currentUser.following and user.username != currentUser.username:
+  <form action="follow" method="post">
+    <input type="hidden" name="follower" value="${currentUser.username}">
+    <input type="hidden" name="target" value="${user.username}">
+    <input type="submit" value="Follow">
+  </form>
+  #end if
+</div>
+#
+#end proc
+#
+#proc renderMessages*(messages: openArray[Message]): string =
+#  result = ""
+<div id="messages">
+  #for message in messages:
+    <div>
+      <a href="/${message.username}">${message.username}</a>
+      <span>${message.time.fromUnix().format("HH:mm MMMM d',' yyyy")}</span>
+      <h3>${message.msg}</h3>
+    </div>
+  #end for
+</div>
+#end proc

clients/nim/ormin/license.txt

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2018 Andreas Rumpf
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

clients/nim/ormin/ormin.nim

@@ -0,0 +1,49 @@
+type
+  DbBackend* {.pure.} = enum
+    postgre, sqlite, mysql, baradb
+
+import os
+from ormin/importer_core import generateModelCode, ImportTarget
+
+template importModel*(backend: DbBackend, filename: string, includeStatic: static[bool] = false) {.dirty.} =
+  ## imports a model from an SQL file.
+  bind fileExists, parentDir, `/`
+  bind generateModelCode, ImportTarget
+  const file = static:
+    let path = parentDir(instantiationInfo(-1, true)[0])
+    path / filename & ".sql"
+  const importedFile = static:
+    if not includeStatic:
+      let res =
+        if fileExists("./tools/ormin_importer"):
+          gorgeEx("./tools/ormin_importer " & file)
+        else:
+          # run ormin_importer from the PATH
+          gorgeEx("ormin_importer " & file)
+      if res.exitCode != 0:
+        raise newException(Exception, "Failed to generate model: " & res.output)
+    file
+  {.warning: "Imported SQL Model: " & importedFile.}
+
+  const dbBackend = backend
+
+  import db_connector/db_common
+  when includeStatic:
+    import ormin/db_utils
+
+  when dbBackend == DbBackend.sqlite:
+    import ormin/ormin_sqlite
+  elif dbBackend == DbBackend.postgre:
+    import ormin/ormin_postgre
+  elif dbBackend == DbBackend.mysql:
+    import ormin/ormin_mysql
+  elif dbBackend == DbBackend.baradb:
+    import ormin/ormin_baradb
+  else:
+    {.error: "unknown database backend".}
+
+  when includeStatic:
+    generateModelCode(staticRead(file), file, ImportTarget(ord(backend)), true)
+  else:
+    include filename
+  include "ormin/queries"

clients/nim/ormin/ormin.nimble

@@ -0,0 +1,23 @@
+# Package
+
+version       = "0.9.0"
+author        = "Araq"
+description = "Prepared SQL statement generator. A lightweight ORM."
+license       = "MIT"
+bin = @["tools/ormin_importer"]
+skipDirs = @["examples"]
+installExt = @["nim"]
+
+# Dependencies
+requires "nim >= 2.0.0"
+requires "db_connector >= 0.1.0"
+
+feature "examples":
+  requires "websocket >= 0.2.2"
+  requires "karax"
+  requires "jester"
+
+import std/os
+when fileExists("config.nims"):
+  include "config.nims"
+

clients/nim/ormin/ormin/db_types.nim

@@ -0,0 +1,43 @@
+import std/strutils
+import db_connector/db_common
+
+proc dbTypFromName*(name: string): DbTypeKind =
+  var k = dbUnknown
+
+  case name.toLowerAscii
+  of "int", "integer", "int8", "smallint", "int16",
+      "longint", "int32", "int64", "tinyint", "hugeint": k = dbInt
+  of "uint", "uint8", "uint16", "uint32", "uint64": k = dbUInt
+  of "serial": k = dbSerial
+  of "bit": k = dbBit
+  of "bool", "boolean": k = dbBool
+  of "blob": k = dbBlob
+  of "fixedchar": k = dbFixedChar
+  of "varchar", "text", "string": k = dbVarchar
+  of "json": k = dbJson
+  of "xml": k = dbXml
+  of "decimal": k = dbDecimal
+  of "float", "double", "longdouble", "real": k = dbFloat
+  of "date", "day": k = dbDate
+  of "time": k = dbTime
+  of "datetime": k = dbDateTime
+  of "timestamp", "timestamptz": k = dbTimestamp
+  of "timeinterval": k = dbTimeInterval
+  of "set": k = dbSet
+  of "array": k = dbArray
+  of "composite": k = dbComposite
+  of "url", "uri": k = dbUrl
+  of "uuid": k = dbUuid
+  of "inet", "ip", "tcpip": k = dbInet
+  of "mac", "macaddress": k = dbMacAddress
+  of "geometry": k = dbGeometry
+  of "point": k = dbPoint
+  of "line": k = dbLine
+  of "lseg": k = dbLseg
+  of "box": k = dbBox
+  of "path": k = dbPath
+  of "polygon": k = dbPolygon
+  of "circle": k = dbCircle
+  else: discard
+
+  return k

clients/nim/ormin/ormin/db_utils.nim

@@ -0,0 +1,179 @@
+import std/[os, paths]
+import db_connector/db_common, strutils, strformat
+import db_connector/db_postgres as db_postgres
+import db_connector/db_sqlite as db_sqlite
+
+import parsesql_tmp # import std/parsesql
+
+export paths
+
+type
+  DbConn = db_postgres.DbConn | db_sqlite.DbConn
+  DbId* = distinct string
+  DbSql* = distinct string
+
+proc `$`*(dbId: DbId): string {.borrow.}
+proc `$`*(dbSql: DbSql): string {.borrow.}
+
+template staticLoad*(filename: string): DbSql =
+  bind isAbsolute, parentDir, `/`, instantiationInfo
+  block:
+    const schemaPath {.gensym.} = static:
+      if isAbsolute(filename):
+        filename
+      else:
+        parentDir(instantiationInfo(-1, true)[0]) / filename
+    const schemaSql {.gensym.} = staticRead(schemaPath)
+    static:
+      try:
+        discard parseSql(schemaSql)
+      except SqlParseError as e:
+        doAssert false, "Invalid SQL in " & schemaPath & ": " & e.msg
+    DbSql(schemaSql)
+
+proc parseQualifiedIdentifier(name: string): seq[(string, bool)] =
+  var current = ""
+  var quoteChar = '\0'
+  var partWasQuoted = false
+  var i = 0
+  while i < name.len:
+    let c = name[i]
+    if quoteChar == '\0':
+      case c
+      of '.':
+        result.add((current, partWasQuoted))
+        current = ""
+        partWasQuoted = false
+      of '"', '\'', '`':
+        if current.len == 0:
+          quoteChar = c
+          partWasQuoted = true
+        else:
+          current.add(c)
+      else:
+        current.add(c)
+    else:
+      if c == quoteChar:
+        if i + 1 < name.len and name[i + 1] == quoteChar:
+          current.add(c)
+          inc(i)
+        else:
+          quoteChar = '\0'
+      else:
+        current.add(c)
+    inc(i)
+
+  result.add((current, partWasQuoted))
+
+proc canUseBareIdentifier(part: string): bool =
+  if part.len == 0:
+    return false
+  if part[0] notin {'a'..'z', 'A'..'Z', '_'}:
+    return false
+  for c in part[1..^1]:
+    if c notin {'a'..'z', 'A'..'Z', '0'..'9', '_'}:
+      return false
+  true
+
+proc quoteDbIdentifier*(name: string): DbId =
+  ## Quote a database identifier for direct interpolation into SQL text.
+  ## Dot-separated names are treated as qualified identifiers.
+  var partsSql: seq[string] = @[]
+  for (part, wasQuoted) in parseQualifiedIdentifier(name):
+    let normalizedPart = if wasQuoted: part else: part.toLowerAscii()
+    if wasQuoted or not canUseBareIdentifier(normalizedPart):
+      partsSql.add("\"" & normalizedPart.replace("\"", "\"\"") & "\"")
+    else:
+      partsSql.add(normalizedPart)
+  DbId(partsSql.join("."))
+
+proc dropTableName(db: DbConn; tableName, lookupName: string) =
+  # SQL parameters bind values, not identifiers, so DROP TABLE needs the
+  # identifier rendered into the statement text with correct quoting.
+  when defined(sqlite) and defined(orminLegacySqliteDropNames):
+    db.exec(sql("drop table if exists " & lookupName))
+  else:
+    let tableIdentSql = quoteDbIdentifier(tableName)
+    when defined(postgre):
+      db.exec(sql("drop table if exists " & $tableIdentSql & " cascade"))
+    else:
+      db.exec(sql("drop table if exists " & $tableIdentSql))
+
+iterator tableDefs(sql: DbSql): tuple[name, tableName, model: string] =
+  # Parse the entire SQL file and iterate statements via the SQL parser
+  var ast: SqlNode
+  try:
+    ast = parseSql($sql)
+  except SqlParseError as e:
+    echo "SQL Parse Error:\n", sql
+    raise e
+
+  if ast.len > 0:
+    # ast is a statement list; iterate each statement node
+    for i in 0 ..< ast.len:
+      let node = ast[i]
+      if node.kind in {nkCreateTable, nkCreateTableIfNotExists}:
+        yield (node[0].strVal.toLowerAscii(), $node[0], $node)
+  else:
+    # Fallback: ast might be a single statement (not a list)
+    let node = ast
+    if node.kind in {nkCreateTable, nkCreateTableIfNotExists}:
+      yield (node[0].strVal.toLowerAscii(), $node[0], $node)
+
+iterator tablePairs*(sql: string): tuple[name, model: string] =
+  for name, _, model in tableDefs(DbSql(sql)):
+    yield (name, model)
+
+iterator tablePairs*(sql: static[DbSql]): tuple[name, model: string] =
+  for name, _, model in tableDefs(sql):
+    yield (name, model)
+
+
+iterator tablePairs*(sql: Path): tuple[name, model: string] =
+  let f = readFile($sql)
+  for n, m in tablePairs(f):
+    yield (n, m)
+
+proc createTable*(db: DbConn; sqlFile: Path) =
+  for _, m in tablePairs(sqlFile):
+    db.exec(sql(m))
+
+proc createTable*(db: DbConn; sqlFile: Path, name: string) =
+  for n, m in tablePairs(sqlFile):
+    if n == name:
+      db.exec(sql(m))
+      return
+  raiseAssert &"table: {name} not found in: {sqlFile}"
+
+proc createTable*(db: DbConn; schemaSql: static[DbSql]) =
+  for _, m in tablePairs(schemaSql):
+    db.exec(sql(m))
+
+proc createTable*(db: DbConn; schemaSql: static[DbSql], name: string) =
+  for n, m in tablePairs(schemaSql):
+    if n == name:
+      db.exec(sql(m))
+      return
+  raiseAssert &"table: {name} not found in static schema"
+
+proc dropTable*(db: DbConn; sqlFile: Path) =
+  for lookupName, tableName, _ in tableDefs(DbSql(readFile($sqlFile))):
+    db.dropTableName(tableName, lookupName)
+
+proc dropTable*(db: DbConn; sqlFile: Path, name: string) =
+  for lookupName, tableName, _ in tableDefs(DbSql(readFile($sqlFile))):
+    if lookupName == name:
+      db.dropTableName(tableName, lookupName)
+      return
+  raiseAssert &"table: {name} not found in: {sqlFile}"
+
+proc dropTable*(db: DbConn; schemaSql: static[DbSql]) =
+  for lookupName, tableName, _ in tableDefs(schemaSql):
+    db.dropTableName(tableName, lookupName)
+
+proc dropTable*(db: DbConn; schemaSql: static[DbSql], name: string) =
+  for lookupName, tableName, _ in tableDefs(schemaSql):
+    if lookupName == name:
+      db.dropTableName(tableName, lookupName)
+      return
+  raiseAssert &"table: {name} not found in static schema"

clients/nim/ormin/ormin/dispatcher.nim

@@ -0,0 +1,71 @@
+## This module implements a little helper macro to ease
+## writing the dispatching logic for JSON based servers.
+
+import macros
+
+proc tbody(n: NimNode): NimNode =
+  # transforms::
+  #   f fields(a, "b")
+  # into::
+  #   f  a = %args["a"], b = %args["b"]
+  case n.kind
+  of nnkCallKinds:
+    result = copyNimNode(n)
+    result.add tbody(n[0])
+    for i in 1..<n.len:
+      let it = n[i]
+      if it.kind == nnkCall and $it[0] == "fields":
+        for j in 1..<it.len:
+          let field = it[j]
+          let s = if field.kind in {nnkStrLit..nnkTripleStrLit}: field.strVal
+                  else: $field
+          let arg = newTree(nnkPrefix, ident"%",
+            newTree(nnkBracketExpr, ident"arg", newLit(s)))
+          result.add newTree(nnkExprEqExpr, ident(s), arg)
+      else:
+        result.add tbody(it)
+  else:
+    result = copyNimNode(n)
+    for x in n: result.add tbody(x)
+
+macro createDispatcher*(name, n: untyped): untyped =
+  expectKind n, nnkStmtList
+  result = newStmtList()
+  let disp = newTree(nnkCaseStmt, ident"cmd")
+  template cmdProc(name, body) {.dirty.} =
+    proc name(arg: JsonNode): JsonNode = body
+  template callCmd(name) {.dirty.} =
+    result = name(arg)
+
+  for x in n:
+    if x.kind == nnkCall and x.len == 2 and
+        x[0].kind == nnkIdent and x[1].kind == nnkStmtList:
+      result.add getAst(cmdProc(x[0], tbody x[1]))
+      disp.add newTree(nnkOfBranch, newLit($x[0]),
+                       newStmtList(getAst(callCmd(x[0]))))
+    else:
+      # do not touch:
+      result.add n
+  disp.add newTree(nnkElse, newStmtList(newTree(nnkDiscardStmt, newEmptyNode())))
+
+  template dispatchProc(name, body) {.dirty.} =
+    proc dispatch(inp: JsonNode): JsonNode =
+      let arg = inp["arg"]
+      let cmd = inp["cmd"].getStr("")
+      body
+  result.add getAst(dispatchProc(name, disp))
+  when defined(debugDispatcherDsl):
+    echo repr result
+
+when isMainModule:
+  import json, db_sqlite
+
+  createDispatcher(dispatch):
+    insertCustomer:
+      echo "insert customer", fields(a, b, c)
+      result = arg
+    selectCustomers:
+      echo "select customer"
+      result = arg
+
+  echo dispatch(nil, %*{"cmd": "insertCustomer", "arg": [1, 2, 3]})

clients/nim/ormin/ormin/importer_core.nim

@@ -0,0 +1,178 @@
+import std/[macros, strutils, tables]
+import db_connector/db_common
+
+import ./db_types
+import ./parsesql_tmp
+
+const
+  FileHeader* = """
+# Generated by ormin_importer. DO NOT EDIT.
+
+type
+  Attr = object
+    name: string
+    tabIndex: int
+    typ: DbTypekind
+    key: int   # 0 nothing special,
+               # +1 -- primary key
+               # -N -- references attribute N
+"""
+
+type
+  DbColumn* = object
+    name*: string
+    tableName*: string
+    typ*: DbType
+    primaryKey*: bool
+    refs*: (string, string)
+  DbColumns* = seq[DbColumn]
+
+  KnownTables* = OrderedTable[string, DbColumns]
+  ImportTarget* = enum
+    postgre, sqlite, mysql, baradb
+
+proc hasAttribute(colDesc: SqlNode; k: set[SqlNodeKind]): bool =
+  for i in 2 ..< colDesc.len:
+    if colDesc[i].kind in k:
+      return true
+
+proc hasRefs(colDesc: SqlNode): (string, string) =
+  for i in 2 ..< colDesc.len:
+    let c = colDesc[i]
+    if c.kind == nkReferences:
+      if c[0].kind == nkCall:
+        return (c[0][0].strVal, c[0][1].strVal)
+      elif c[0].kind == nkIdent:
+        return ($c[0], "id")
+  ("", "")
+
+proc getType(n: SqlNode): DbType =
+  var it = n
+  if it.kind == nkCall:
+    it = it[0]
+  if it.kind == nkEnumDef:
+    result.kind = dbEnum
+    result.validValues = @[]
+    for i in 0 ..< it.len:
+      assert it[i].kind == nkStringLit
+      result.validValues.add it[i].strVal
+  elif it.kind in {nkIdent, nkStringLit}:
+    result.kind = dbTypFromName(it.strVal)
+    result.name = it.strVal
+
+proc collectTables*(n: SqlNode; t: var KnownTables) =
+  if n.isNil:
+    return
+  case n.kind
+  of nkCreateTable, nkCreateTableIfNotExists:
+    let tableName = n[0].strVal
+    var cols: DbColumns = @[]
+    for i in 1 ..< n.len:
+      let it = n[i]
+      if it.kind == nkColumnDef:
+        var typ = getType(it[1])
+        if hasAttribute(it, {nkNotNull}):
+          typ.notNull = true
+        cols.add DbColumn(
+          name: it[0].strVal,
+          tableName: tableName,
+          typ: typ,
+          primaryKey: hasAttribute(it, {nkPrimaryKey}),
+          refs: hasRefs(it)
+        )
+    for i in 1 ..< n.len:
+      let it = n[i]
+      if it.kind == nkForeignKey:
+        var refNode: SqlNode = nil
+        var localCols: seq[string] = @[]
+        for j in 0 ..< it.len:
+          let child = it[j]
+          if child.kind == nkReferences:
+            refNode = child
+          elif child.kind == nkIdent:
+            localCols.add(child.strVal)
+        if refNode.isNil:
+          continue
+        var r = refNode[0]
+        var refTable = ""
+        var refCols: seq[string] = @[]
+        if r.kind == nkColumnReference or r.kind == nkCall:
+          refTable = r[0].strVal
+          for k in 1 ..< r.len:
+            refCols.add(r[k].strVal)
+        let pairCount = min(localCols.len, refCols.len)
+        for k in 0 ..< pairCount:
+          let localName = localCols[k]
+          let targetCol = refCols[k]
+          for c in mitems(cols):
+            if cmpIgnoreCase(c.name, localName) == 0:
+              c.refs = (refTable, targetCol)
+              break
+    t[tableName] = cols
+  else:
+    for i in 0 ..< n.len:
+      collectTables(n[i], t)
+
+proc attrToKey(a: DbColumn; t: KnownTables): int =
+  if a.primaryKey:
+    return 1
+  if a.refs[0].len > 0:
+    var i = 0
+    for k, v in pairs(t):
+      for b in v:
+        if cmpIgnoreCase(k, a.refs[0]) == 0 and cmpIgnoreCase(b.name, a.refs[1]) == 0:
+          return -i - 1
+        inc i
+  0
+
+proc renderModelCode(schemaSql, schemaPath: string; target: ImportTarget; includeStatic = false): string =
+  discard target
+  let sql = parseSql(schemaSql, schemaPath)
+  var knownTables = initOrderedTable[string, DbColumns]()
+  collectTables(sql, knownTables)
+
+  result.add FileHeader
+  result.add "const tableNames = ["
+  var i = 0
+  for k in keys(knownTables):
+    if i > 0:
+      result.add ",\n  "
+    else:
+      result.add "\n  "
+    result.add escape(k.toLowerAscii)
+    inc i
+  result.add "\n]\n"
+
+  i = 0
+  var j = 0
+  result.add "\nconst attributes = ["
+  for _, v in mpairs(knownTables):
+    for a in v:
+      if j > 0:
+        result.add ",\n  "
+      else:
+        result.add "\n  "
+      result.add "Attr(name: "
+      result.add escape(a.name.toLowerAscii)
+      result.add ", tabIndex: "
+      result.add $i
+      result.add ", typ: "
+      result.add $a.typ.kind
+      result.add ", key: "
+      result.add $attrToKey(a, knownTables)
+      result.add ")"
+      inc j
+    inc i
+  result.add "\n]\n"
+
+  if includeStatic:
+    result.add "\nconst sqlSchema* = staticLoad("
+    result.add escape(schemaPath)
+    result.add ")\n"
+
+proc generateModelCode*(schemaSql, schemaPath: string; target: ImportTarget; includeStatic = false): string =
+  renderModelCode(schemaSql, schemaPath, target, includeStatic)
+
+macro generateModelCode*(schemaSql: static[string], schemaPath: static[string],
+                         target: static[ImportTarget], includeStatic: static[bool] = false): untyped =
+  parseStmt(renderModelCode(schemaSql, schemaPath, target, includeStatic))

clients/nim/ormin/ormin/ormin_baradb.nim

@@ -0,0 +1,231 @@
+import std/[strutils, json, times, parseutils]
+import db_connector/db_common
+import query_hooks
+export db_common
+
+import baradb/client
+export client.WireValue, client.FieldKind
+
+type
+  DbConn* = SyncClient
+  PStmt = object
+    sql: string
+
+  varcharType* = string
+  intType* = int
+  floatType* = float
+  boolType* = bool
+  timestampType* = DateTime
+  serialType* = int
+  jsonType* = JsonNode
+
+var jsonTimeFormat* = "yyyy-MM-dd HH:mm:ss"
+
+proc dbError*(db: DbConn) {.noreturn.} =
+  var e: ref DbError
+  new(e)
+  e.msg = "BaraDB query failed"
+  raise e
+
+proc prepareStmt*(db: DbConn; q: string): PStmt =
+  when defined(debugOrminTrace):
+    echo "[[Ormin Executing]]: ", q
+  result.sql = q
+
+template startBindings*(s: PStmt; n: int) {.dirty.} =
+  var pparams: seq[WireValue] = newSeq[WireValue](n)
+
+template bindParam*(db: DbConn; s: PStmt; idx: int; x: untyped; t: untyped) =
+  when t is DateTime:
+    let xx = x.format("yyyy-MM-dd HH:mm:ss")
+    pparams[idx-1] = WireValue(kind: fkString, strVal: $xx)
+  elif t is int or t is int64:
+    pparams[idx-1] = WireValue(kind: fkInt64, int64Val: int64(x))
+  elif t is float or t is float64:
+    pparams[idx-1] = WireValue(kind: fkFloat64, float64Val: float64(x))
+  elif t is bool:
+    pparams[idx-1] = WireValue(kind: fkBool, boolVal: bool(x))
+  elif t is string:
+    pparams[idx-1] = WireValue(kind: fkString, strVal: string(x))
+  elif t is JsonNode:
+    pparams[idx-1] = WireValue(kind: fkJson, jsonVal: $x)
+  else:
+    pparams[idx-1] = WireValue(kind: fkString, strVal: $x)
+
+template bindNullParam*(db: DbConn; s: PStmt; idx: int) =
+  pparams[idx-1] = WireValue(kind: fkNull)
+
+template bindParamJson*(db: DbConn; s: PStmt; idx: int; xx: JsonNode;
+                        t: typedesc) =
+  let x = xx
+  if x.kind == JNull:
+    pparams[idx-1] = WireValue(kind: fkNull)
+  else:
+    bindFromJson(db, s, idx, x, t)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc) =
+  {.error: "invalid type for JSON object".}
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[string]) =
+  doAssert x.kind == JString
+  pparams[idx-1] = WireValue(kind: fkString, strVal: x.str)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[int|int64]) =
+  doAssert x.kind == JInt
+  pparams[idx-1] = WireValue(kind: fkInt64, int64Val: x.num)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[float64]) =
+  doAssert x.kind == JFloat
+  pparams[idx-1] = WireValue(kind: fkFloat64, float64Val: x.fnum)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[bool]) =
+  doAssert x.kind == JBool
+  pparams[idx-1] = WireValue(kind: fkBool, boolVal: x.bval)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[DateTime]) =
+  doAssert x.kind == JString
+  pparams[idx-1] = WireValue(kind: fkString, strVal: x.str)
+
+template startQuery*(db: DbConn; s: PStmt) =
+  when declared(pparams):
+    var queryResult {.inject.} = db.query(s.sql, pparams)
+  else:
+    var queryResult {.inject.} = db.query(s.sql)
+  var queryI {.inject.} = -1
+  var queryLen {.inject.} = queryResult.rowCount
+
+template stopQuery*(db: DbConn; s: PStmt) =
+  discard
+
+template stepQuery*(db: DbConn; s: PStmt; returnsData: bool): bool =
+  inc queryI
+  queryI < queryLen
+
+template getLastId*(db: DbConn; s: PStmt): int =
+  0
+
+template getAffectedRows*(db: DbConn; s: PStmt): int =
+  queryResult.affectedRows
+
+proc close*(db: DbConn) =
+  client.close(db)
+
+proc open*(connection, user, password, database: string): DbConn =
+  let colonPos = connection.find(':')
+  let host = if colonPos < 0: connection else: connection[0..<colonPos]
+  let portStr = if colonPos < 0: "9472" else: connection[colonPos+1..^1]
+  let port = parseInt(portStr)
+  let cfg = ClientConfig(
+    host: host,
+    port: port,
+    database: database,
+    username: user,
+    password: password
+  )
+  result = newSyncClient(cfg)
+  result.connect()
+
+# --- Result binding helpers ---
+
+template currentValue(s: PStmt; idx: int): string =
+  queryResult.rows[queryI][idx-1]
+
+template columnIsNull*(db: DbConn; s: PStmt; idx: int): bool =
+  currentValue(s, idx).len == 0
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: int;
+                     t: typedesc; name: string) =
+  dest = int(parseBiggestInt(currentValue(s, idx)))
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: int64;
+                     t: typedesc; name: string) =
+  dest = parseBiggestInt(currentValue(s, idx))
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: bool;
+                     t: typedesc; name: string) =
+  let v = currentValue(s, idx)
+  dest = v == "true" or v == "1" or v == "t"
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: var string;
+                     t: typedesc; name: string) =
+  dest = currentValue(s, idx)
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: float64;
+                     t: typedesc; name: string) =
+  dest = parseFloat(currentValue(s, idx))
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: var DateTime;
+                     t: typedesc; name: string) =
+  let src = currentValue(s, idx)
+  if src.len > 0:
+    dest = parse(src, "yyyy-MM-dd HH:mm:ss")
+  else:
+    dest = initDateTime(1, 1, 1, 0, 0, 0, utc())
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: JsonNode;
+                     t: typedesc; name: string) =
+  dest = parseJson(currentValue(s, idx))
+
+template bindResult*[T](db: DbConn; s: PStmt; idx: int; dest: var DbValue[T];
+                        t: typedesc; name: string) =
+  let v = currentValue(s, idx)
+  if v.len == 0:
+    dest.isNull = true
+  else:
+    dest.isNull = false
+    when T is string:
+      dest.value = v
+    else:
+      bindResult(db, s, idx, dest.value, t, name)
+
+template createJObject*(): untyped = newJObject()
+template createJArray*(): untyped = newJArray()
+
+template bindResultJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                         t: typedesc; name: string) =
+  let x = obj
+  doAssert x.kind == JObject
+  let v = currentValue(s, idx)
+  if v.len == 0:
+    x[name] = newJNull()
+  else:
+    bindToJson(db, s, idx, x, t, name)
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc; name: string) =
+  {.error: "invalid type for JSON object".}
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[string]; name: string) =
+  obj[name] = newJString(currentValue(s, idx))
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[int|int64]; name: string) =
+  var v: int64
+  discard parseBiggestInt(currentValue(s, idx), v)
+  obj[name] = newJInt(v)
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[float64]; name: string) =
+  obj[name] = newJFloat(parseFloat(currentValue(s, idx)))
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[bool]; name: string) =
+  let v = currentValue(s, idx)
+  obj[name] = newJBool(v == "true" or v == "1" or v == "t")
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[DateTime]; name: string) =
+  var dt: DateTime
+  bindResult(db, s, idx, dt, t, name)
+  obj[name] = newJString(format(dt, jsonTimeFormat))
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[JsonNode]; name: string) =
+  obj[name] = parseJson(currentValue(s, idx))

clients/nim/ormin/ormin/ormin_postgre.nim

@@ -0,0 +1,274 @@
+import strutils, db_connector/postgres, json, times
+
+import db_connector/db_common
+import query_hooks
+export db_common
+
+type
+  DbConn* = PPGconn    ## encapsulates a database connection
+  PStmt = string ## a identifier for the prepared queries
+
+  varcharType* = string
+  intType* = int
+  floatType* = float
+  boolType* = bool
+  timestampType* = Datetime
+  serialType* = int
+  jsonType* = JsonNode
+
+var jsonTimeFormat* = "yyyy-MM-dd HH:mm:ss"
+
+proc dbError*(db: DbConn) {.noreturn.} =
+  ## raises a DbError exception.
+  var e: ref DbError
+  new(e)
+  e.msg = $pqErrorMessage(db)
+  raise e
+
+proc c_strtod(buf: cstring, endptr: ptr cstring = nil): float64 {.
+  importc: "strtod", header: "<stdlib.h>", noSideEffect.}
+
+proc c_strtol(buf: cstring, endptr: ptr cstring = nil, base: cint = 10): int {.
+  importc: "strtol", header: "<stdlib.h>", noSideEffect.}
+
+var sid {.compileTime.}: int
+
+proc prepareStmt*(db: DbConn; q: string): PStmt =
+  when defined(debugOrminTrace):
+    echo "[[Ormin Executing]]: ", q
+  inc sid
+  result = "ormin" & $sid
+  var res = pqprepare(db, result, q, 0, nil)
+  if pqResultStatus(res) != PGRES_COMMAND_OK: dbError(db)
+
+template startBindings*(s: PStmt; n: int) {.dirty.} =
+  # pparams is a duplicated array to keep the Nim string alive
+  # for the duration of the query. This is safer than relying
+  # on the conservative stack marking:
+  var pparams: array[n, string]
+  var parr: array[n, cstring]
+
+template bindParam*(db: DbConn; s: PStmt; idx: int; x: untyped; t: untyped) =
+  # when not (x is t):
+  #   {.error: "type mismatch for query argument at position " & $idx.}
+  when t is DateTime:
+    let xx = x.format("yyyy-MM-dd HH:mm:ss\'.\'ffffffzzzz")
+    pparams[idx-1] = $xx
+  else:
+    pparams[idx-1] = $x
+
+  parr[idx-1] = cstring(pparams[idx-1])
+
+template bindParamUnchecked(db: DbConn; s: PStmt; idx: int; x: untyped; t: untyped) =
+  pparams[idx-1] = $x
+  parr[idx-1] = cstring(pparams[idx-1])
+
+template bindNullParam*(db: DbConn; s: PStmt; idx: int) =
+  parr[idx-1] = cstring(nil)
+
+template bindParamJson*(db: DbConn; s: PStmt; idx: int; xx: JsonNode;
+                        t: typedesc) =
+  let x = xx
+  if x.kind == JNull:
+    # a NULL entry is not reflected in the 'pparams' array:
+    parr[idx-1] = cstring(nil)
+  else:
+    bindFromJson(db, s, idx, x, t)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc) =
+  {.error: "invalid type for JSON object".}
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[string]) =
+  doAssert x.kind == JString
+  let xs = x.str
+  bindParamUnchecked(db, s, idx, xs, t)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[int|int64]) =
+  doAssert x.kind == JInt
+  let xi = x.num
+  bindParamUnchecked(db, s, idx, xi, t)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[float64]) =
+  doAssert x.kind == JFloat
+  let xf = x.fnum
+  bindParamUnchecked(db, s, idx, xf, t)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[bool]) =
+  doAssert x.kind == JBool
+  let xb = x.bval
+  bindParamUnchecked(db, s, idx, xb, t)  
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[DateTime]) =
+  doAssert x.kind == JString
+  let dt = x.str
+  bindParamUnchecked(db, s, idx, dt, t)
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: int;
+                     t: typedesc; name: string) =
+  dest = c_strtol(pqgetvalue(queryResult, queryI, idx.cint))
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: int64;
+                     t: typedesc; name: string) =
+  dest = c_strtol(pqgetvalue(queryResult, queryI, idx.cint))
+
+# XXX This needs testing:
+template isTrue(x): untyped = x[0] == 't'
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: bool;
+                     t: typedesc; name: string) =
+  dest = isTrue(pqgetvalue(queryResult, queryI, idx.cint))
+
+proc fillString(dest: var string; src: cstring; srcLen: int) {.inline.} =
+  dest = ""
+  var i = 0
+  while src[i] != '\0':
+    dest.add src[i]
+    inc i
+    
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: var string;
+                     t: typedesc; name: string) =
+  if pqgetisnull(queryResult, queryI, idx.cint) != 0:
+    when defined(nimNoNilSeqs):
+      setLen(dest, 0)
+    else:
+      dest = nil
+  else:
+    let src = pqgetvalue(queryResult, queryI, idx.cint)
+    let srcLen = int(pqgetlength(queryResult, queryI, idx.cint))
+    fillString(dest, src, srcLen)
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: float64;
+                     t: typedesc; name: string) =
+  dest = c_strtod(pqgetvalue(queryResult, queryI, idx.cint))
+
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: var DateTime;
+                     t: typedesc; name: string) =
+  let
+    src = $pqgetvalue(queryResult, queryI, idx.cint)
+    i = src.find('.')
+    tzflag = src[src.len-3]
+  if i < 0:
+    if tzflag in {'+', '-'}:
+      dest = parse(src, "yyyy-MM-dd HH:mm:sszz")
+    else:
+      dest = parse(src, "yyyy-MM-dd HH:mm:ss")
+  else:
+    if tzflag in {'+', '-'}:
+      let itz = src.len - 3
+      let dtstr = src[0..<itz] & '0'.repeat(10-src.len+i) & src[src.len-3 .. ^1]
+      dest = parse(dtstr, "yyyy-MM-dd HH:mm:ss\'.\'ffffffzz")
+    else:
+      let dtstr = src & '0'.repeat(7-src.len+i)
+      dest = parse(dtstr, "yyyy-MM-dd HH:mm:ss\'.\'ffffff")
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: JsonNode;
+                     t: typedesc; name: string) =
+  dest = parseJson($pqgetvalue(queryResult, queryI, idx.cint))
+
+template bindResult*[T](db: DbConn; s: PStmt; idx: int; dest: var DbValue[T];
+                        t: typedesc; name: string) =
+  if pqgetisnull(queryResult, queryI, idx.cint) != 0:
+    dest.isNull = true
+  else:
+    dest.isNull = false
+    when T is string:
+      let src = pqgetvalue(queryResult, queryI, idx.cint)
+      let srcLen = int(pqgetlength(queryResult, queryI, idx.cint))
+      fillString(dest.value, src, srcLen)
+    else:
+      bindResult(db, s, idx, dest.value, t, name)
+
+template createJObject*(): untyped = newJObject()
+template createJArray*(): untyped = newJArray()
+
+template bindResultJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                         t: typedesc; name: string) =
+  let x = obj
+  doAssert x.kind == JObject
+  if pqgetisnull(queryResult, queryI, idx.cint) != 0:
+    x[name] = newJNull()
+  else:
+    bindToJson(db, s, idx, x, t, name)
+
+template columnIsNull*(db: DbConn; s: PStmt; idx: int): bool =
+  pqgetisnull(queryResult, queryI, idx.cint) != 0
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc; name: string) =
+  {.error: "invalid type for JSON object".}    
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[string]; name: string) =
+  let src = pqgetvalue(queryResult, queryI, idx.cint)
+  obj[name] = newJString($src)  
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[int|int64]; name: string) =
+  obj[name] = newJInt(c_strtol(pqgetvalue(queryResult, queryI, idx.cint)))
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[float64]; name: string) =
+  obj[name] = newJFloat(c_strtod(pqgetvalue(queryResult, queryI, idx.cint)))
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[bool]; name: string) =
+  obj[name] = newJBool(isTrue(pqgetvalue(queryResult, queryI, idx.cint)))
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[DateTime]; name: string) =
+  var dt: DateTime
+  bindResult(db, s, idx, dt, t, name)
+  obj[name] = newJString(format(dt, jsonTimeFormat))
+  
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[JsonNode]; name: string) =
+  let src = pqgetvalue(queryResult, queryI, idx.cint)
+  obj[name] = parseJson($src)  
+
+template startQuery*(db: DbConn; s: PStmt) =
+  when declared(pparams):
+    var queryResult {.inject.} = pqexecPrepared(db, s, int32(parr.len),
+            cast[cstringArray](addr parr), nil, nil, 0)
+  else:
+    var queryResult {.inject.} = pqexecPrepared(db, s, int32(0),
+            nil, nil, nil, 0)
+  if pqResultStatus(queryResult) == PGRES_COMMAND_OK:
+    discard # insert does not returns data in pg
+  elif pqResultStatus(queryResult) != PGRES_TUPLES_OK: ormin_postgre.dbError(db)
+  var queryI {.inject.} = cint(-1)
+  var queryLen {.inject.} = pqntuples(queryResult)
+
+template stopQuery*(db: DbConn; s: PStmt) =
+  pqclear(queryResult)
+
+template stepQuery*(db: DbConn; s: PStmt; returnsData: bool): bool =
+  inc queryI
+  queryI < queryLen
+
+template getLastId*(db: DbConn; s: PStmt): int = 0 # XXX to implement
+
+template getAffectedRows*(db: DbConn; s: PStmt): int =
+  c_strtol(pqcmdTuples(queryResult))
+
+proc close*(db: DbConn) =
+  ## closes the database connection.
+  if db != nil: pqfinish(db)
+
+proc open*(connection, user, password, database: string): DbConn =
+  ## opens a database connection. Raises `DbError` if the connection could not
+  ## be established.
+  let
+    colonPos = connection.find(':')
+    host = if colonPos < 0: connection
+           else: substr(connection, 0, colonPos-1)
+    port = if colonPos < 0: ""
+           else: substr(connection, colonPos+1)
+  result = pqsetdbLogin(host, port, nil, nil, database, user, password)
+  if pqStatus(result) != CONNECTION_OK: dbError(result) # result = nil

clients/nim/ormin/ormin/ormin_sqlite.nim

@@ -0,0 +1,295 @@
+
+{.deadCodeElim: on.}
+
+import json, times
+
+import db_connector/db_common
+import db_connector/sqlite3
+import query_hooks
+export db_common
+
+type
+  DbConn* = PSqlite3  ## encapsulates a database connection
+
+  varcharType* = string
+  blobType* = seq[byte]
+  intType* = int
+  floatType* = float
+  boolType* = bool
+  timestampType* = DateTime
+  jsonType* = JsonNode
+
+var jsonTimeFormat* = "yyyy-MM-dd HH:mm:ss"
+
+proc dbError*(db: DbConn) {.noreturn.} =
+  ## raises a DbError exception.
+  var e: ref DbError
+  new(e)
+  e.msg = $sqlite3.errmsg(db)
+  raise e
+
+proc prepareStmt*(db: DbConn; q: string): PStmt =
+  when defined(debugOrminTrace):
+    echo "[[Ormin Executing]]: ", q
+  if prepare_v2(db, q, q.len.cint, result, nil) != SQLITE_OK:
+    dbError(db)
+
+template startBindings*(s: PStmt; n: int) =
+  if clear_bindings(s) != SQLITE_OK: dbError(db)
+
+template bindParam*(db: DbConn; s: PStmt; idx: int; x, t: untyped) =
+  #when not (x is t):
+  #  {.error: "type mismatch for query argument at position " & $idx.}
+  when t is blobType:
+    let xs = x
+    let blobPtr = if xs.len == 0:
+        cast[pointer](nil)
+      else:
+        cast[pointer](unsafeAddr(xs[0]))
+    if bind_blob(s, idx.cint, blobPtr, xs.len.cint, SQLITE_TRANSIENT) != SQLITE_OK:
+      dbError(db)
+  elif t is int or t is int64 or t is bool:
+    if bind_int64(s, idx.cint, x.int64) != SQLITE_OK: dbError(db)
+  elif t is string:
+    if bind_text(s, idx.cint, cstring(x), x.len.cint, SQLITE_TRANSIENT) != SQLITE_OK:
+      dbError(db)
+  elif t is float64:
+    if bind_double(s, idx.cint, x) != SQLITE_OK:
+      dbError(db)
+  elif t is DateTime:
+    let xx = if x.nanosecond > 0:
+      x.utc().format("yyyy-MM-dd HH:mm:ss\'.\'fff")
+    else:
+      x.utc().format("yyyy-MM-dd HH:mm:ss")
+
+    if bind_text(s, idx.cint, cstring(xx), xx.len.cint, SQLITE_TRANSIENT) != SQLITE_OK:
+      dbError(db)
+  elif t is JsonNode:
+    let xx = $x
+    if bind_text(s, idx.cint, cstring(xx), xx.len.cint, SQLITE_TRANSIENT) != SQLITE_OK:
+      dbError(db)
+  else:
+    {.error: "type mismatch for query argument at position " & $idx.}
+
+template bindNullParam*(db: DbConn; s: PStmt; idx: int) =
+  if bind_null(s, idx.cint) != SQLITE_OK:
+    dbError(db)
+
+template bindParamJson*(db: DbConn; s: PStmt; idx: int; xx: JsonNode;
+                        t: typedesc) =
+  let x = xx
+  if x.kind == JNull:
+    if bind_null(s, idx.cint) != SQLITE_OK: dbError(db)
+  else:
+    bindFromJson(db, s, idx, x, t)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc) =
+  {.error: "invalid type for JSON object".}
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[string]) =
+  doAssert x.kind == JString
+  let xs = x.str
+  if bind_text(s, idx.cint, cstring(xs), xs.len.cint, SQLITE_TRANSIENT) != SQLITE_OK:
+    dbError(db)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[int|int64]) =
+  doAssert x.kind == JInt
+  let xi = x.num
+  if bind_int64(s, idx.cint, xi.int64) != SQLITE_OK: dbError(db)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[float64]) =
+  doAssert x.kind == JFloat
+  let xf = x.fnum
+  if bind_double(s, idx.cint, xf) != SQLITE_OK:
+    dbError(db)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[bool]) =
+  doAssert x.kind == JBool
+  let xb = x.bval
+  if bind_int64(s, idx.cint, xb.int64) != SQLITE_OK: dbError(db)
+
+template bindFromJson*(db: DbConn; s: PStmt; idx: int; x: JsonNode;
+                       t: typedesc[DateTime]) =
+  doAssert x.kind == JString
+  let
+    dtStr = x.str
+    i = dtStr.find('.')
+    dt = if i > 0 and dtStr[i+1 .. ^1] == "000":
+      dtStr[0 ..< i]
+    else:
+      dtStr
+  if bind_text(s, idx.cint, cstring(dt), dt.len.cint, SQLITE_TRANSIENT) != SQLITE_OK:
+    dbError(db)
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: int;
+                     t: typedesc; name: string) =
+  dest = int column_int64(s, idx.cint)
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: int64;
+                     t: typedesc; name: string) =
+  dest = column_int64(s, idx.cint)
+
+proc fillString(dest: var string; src: cstring; srcLen: int) =
+  when defined(nimNoNilSeqs):
+    setLen(dest, srcLen)
+  else:
+    if dest.isNil: dest = newString(srcLen)
+    else: setLen(dest, srcLen)
+  if srcLen > 0: 
+    copyMem(unsafeAddr(dest[0]), src, srcLen)
+
+proc fillBytes(dest: var seq[byte]; src: pointer; srcLen: int) =
+  when defined(nimNoNilSeqs):
+    setLen(dest, srcLen)
+  else:
+    if dest.isNil: dest = newSeq[byte](srcLen)
+    else: setLen(dest, srcLen)
+  if srcLen > 0:
+    copyMem(unsafeAddr(dest[0]), src, srcLen)
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: var string;
+                     t: typedesc; name: string) =
+  if column_type(s, idx.cint) == SQLITE_NULL:
+    when defined(nimNoNilSeqs):
+      setLen(dest, 0)
+    else:
+      dest = nil
+  else:
+    let srcLen = column_bytes(s, idx.cint)
+    let src = column_text(s, idx.cint)
+    fillString(dest, src, srcLen)
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: var blobType;
+                     t: typedesc; name: string) =
+  let srcLen = column_bytes(s, idx.cint)
+  let src = column_blob(s, idx.cint)
+  fillBytes(dest, src, srcLen)
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: float64;
+                     t: typedesc; name: string) =
+  dest = column_double(s, idx.cint)
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: bool;
+                     t: typedesc; name: string) =
+  dest = column_int64(s, idx.cint) != 0
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: DateTime;
+                     t: typedesc; name: string) =
+  let
+    src = $column_text(s, idx.cint)
+    i = src.find('.')
+  if i < 0:
+    dest = parse(src, "yyyy-MM-dd HH:mm:ss", utc())
+  else:
+    dest = parse(src, "yyyy-MM-dd HH:mm:ss\'.\'fff", utc())
+
+template bindResult*(db: DbConn; s: PStmt; idx: int; dest: JsonNode;
+                     t: typedesc; name: string) =
+  let src = column_text(s, idx.cint)
+  dest = parseJson($src)
+
+template bindResult*[T](db: DbConn; s: PStmt; idx: int; dest: var DbValue[T];
+                        t: typedesc; name: string) =
+  if column_type(s, idx.cint) == SQLITE_NULL:
+    dest.isNull = true
+  else:
+    dest.isNull = false
+    when T is string:
+      let srcLen = column_bytes(s, idx.cint)
+      let src = column_text(s, idx.cint)
+      fillString(dest.value, src, srcLen)
+    else:
+      bindResult(db, s, idx, dest.value, t, name)
+
+template createJObject*(): untyped = newJObject()
+template createJArray*(): untyped = newJArray()
+
+template bindResultJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                         t: typedesc; name: string) =
+  let x = obj
+  doAssert x.kind == JObject
+  if column_type(s, idx.cint) == SQLITE_NULL:
+    x[name] = newJNull()
+  else:
+    bindToJson(db, s, idx, x, t, name)
+
+template columnIsNull*(db: DbConn; s: PStmt; idx: int): bool =
+  column_type(s, idx.cint) == SQLITE_NULL
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc; name: string) =
+  {.error: "invalid type for JSON object".}
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[string]; name: string) =
+  let dest = newJString("")
+  let srcLen = column_bytes(s, idx.cint)
+  let src = column_text(s, idx.cint)
+  fillString(dest.str, src, srcLen)
+  obj[name] = dest
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[int|int64]; name: string) =
+  obj[name] = newJInt(column_int64(s, idx.cint))
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[blobType]; name: string) =
+  let srcLen = column_bytes(s, idx.cint)
+  let src = column_blob(s, idx.cint)
+  var data: blobType
+  fillBytes(data, src, srcLen)
+  let arr = newJArray()
+  for b in data:
+    arr.add newJInt(int(b))
+  obj[name] = arr
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[float64]; name: string) =
+  obj[name] = newJFloat(column_double(s, idx.cint))
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[bool]; name: string) =
+  obj[name] = newJBool(column_int64(s, idx.cint) != 0)
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[DateTime]; name: string) =
+  var dt: DateTime
+  bindResult(db, s, idx, dt, t, name)
+  obj[name] = newJString(format(dt, jsonTimeFormat))
+
+template bindToJson*(db: DbConn; s: PStmt; idx: int; obj: JsonNode;
+                     t: typedesc[JsonNode]; name: string) =
+  let src = column_text(s, idx.cint)
+  obj[name] = parseJson($src)
+
+template startQuery*(db: DbConn; s: PStmt) = discard "nothing to do"
+
+template stopQuery*(db: DbConn; s: PStmt) =
+  if sqlite3.reset(s) != SQLITE_OK: dbError(db)
+
+template stepQuery*(db: DbConn; s: PStmt; returnsData: bool): bool =
+  when returnsData:
+    step(s) == SQLITE_ROW
+  else:
+    step(s) == SQLITE_DONE
+
+template getLastId*(db: DbConn; s: PStmt): int =
+  int(last_insert_rowid(db))
+
+template getAffectedRows*(db: DbConn; s: PStmt): int =
+  int(changes(db))
+
+proc close*(db: DbConn) =
+  ## closes the database connection.
+  if sqlite3.close(db) != SQLITE_OK: dbError(db)
+
+proc open*(connection, user, password, database: string): DbConn =
+  ## opens a database connection. Raises `EDb` if the connection could not
+  ## be established. Only the ``connection`` parameter is used for ``sqlite``.
+  if sqlite3.open(connection, result) != SQLITE_OK:
+    dbError(result)

clients/nim/ormin/ormin/query_hooks.nim

@@ -0,0 +1,54 @@
+import options, json
+
+type
+  DbValue*[T] = object
+    isNull*: bool
+    value*: T
+
+template fromQueryHook*[T, S](val: var T, x: S) =
+  ## Default conversion hook used by `query(T): ...`.
+  ## Users can overload this proc to customize field/type conversions.
+  val = x
+
+template toQueryHook*[T, S](val: var T, x: S) =
+  ## Default conversion hook used for query parameters.
+  ## Users can overload this proc to customize parameter conversions.
+  val = x
+
+proc nullQueryValueError() {.noreturn.} =
+  raise newException(ValueError, "cannot map NULL query result")
+
+proc fromQueryHook*[T, S](val: var Option[T], x: var DbValue[S]) =
+  if x.isNull:
+    val = none(T)
+  else:
+    var converted: T
+    fromQueryHook(converted, move x.value)
+    val = some(converted)
+
+proc fromQueryHook*[T, S](val: var T, x: var DbValue[S]) =
+  if x.isNull:
+    when T is string:
+      val = ""
+    elif T is JsonNode:
+      val = newJNull()
+    else:
+      nullQueryValueError()
+  else:
+    fromQueryHook(val, move x.value)
+
+proc bindFromQueryHook*[T, S](dest: var T, x: var DbValue[S]) =
+  fromQueryHook(dest, x)
+
+proc toQueryHook*[S, T](val: var DbValue[S], x: Option[T]) =
+  if x.isSome:
+    val.isNull = false
+    toQueryHook(val.value, x.get)
+  else:
+    val.isNull = true
+    when compiles(val.value = default(S)):
+      val.value = default(S)
+
+proc toQueryHook*[S, T](val: var DbValue[S], x: T) =
+  val.isNull = false
+  toQueryHook(val.value, x)

clients/nim/ormin/ormin/serverws.nim

@@ -0,0 +1,139 @@
+
+import asynchttpserver, asyncdispatch, asyncnet, json,
+  strutils, times
+
+import websocket
+
+type
+  Receivers* {.pure} = enum
+    sender, allExceptSender, all
+  ReqHandler* = proc (msg: JsonNode; receivers: var Receivers): JsonNode {.
+    closure, gcsafe.}
+
+proc error(msg: string) = echo "[Error] ", msg
+proc warn(msg: string) = echo "[Warning] ", msg
+proc hint(msg: string) = echo "[Hint] ", msg
+
+type
+  Client = ref object
+    socket: AsyncWebSocket
+    connected: bool
+    hostname: string
+    id: int
+    lastMessage: float
+    rapidMessageCount: int
+
+  Server = ref object
+    clients: seq[Client]
+    needsUpdate: bool
+    receivers: Receivers
+    msgs: seq[(string, int)]
+    gid: int
+    handler: ReqHandler
+
+proc newClient(s: Server; socket: AsyncWebSocket, hostname: string): Client =
+  inc s.gid
+  result = Client(socket: socket, connected: true, hostname: hostname, id: s.gid)
+
+proc `$`(client: Client): string =
+  "Client(ip: $1)" % [client.hostname]
+
+proc updateClients(server: Server) {.async.} =
+  while true:
+    var needsUpdate = false
+    for client in server.clients:
+      if not client.connected:
+        needsUpdate = true
+        break
+
+    server.needsUpdate = server.needsUpdate or needsUpdate
+    if server.needsUpdate and server.msgs.len != 0:
+      var someDead = false
+      # perform a copy to prevent the race condition:
+      var msgs = server.msgs
+      setLen(server.msgs, 0)
+      for m in msgs:
+        for c in server.clients:
+          if c.connected:
+            # do not send a broadcast message to the one which sent it:
+            if server.receivers != Receivers.allExceptSender or c.id != m[1]:
+              await c.socket.sendText(m[0]) #, false)
+          else:
+            someDead = true
+      if someDead:
+        var i = 0
+        while i < server.clients.len:
+          if not server.clients[i].connected: del(server.clients, i)
+          else: inc i
+      server.needsUpdate = false
+    # let other stuff in the main loop run:
+    await sleepAsync(10)
+
+proc processMessage(server: Server, client: Client, data: string) {.async.} =
+  # Check if last message was relatively recent. If so, kick the user.
+  echo "processMessage ", data
+  let now = epochTime()
+  if now - client.lastMessage < 0.1: # 100ms
+    client.rapidMessageCount.inc
+  else:
+    client.rapidMessageCount = 0
+
+  client.lastMessage = now
+  if client.rapidMessageCount > 50:
+    warn("Client ($1) is firing messages too rapidly. Killing." % $client)
+    client.connected = false
+  let msgj = parseJson(data)
+  server.receivers = Receivers.sender
+  if msgj.hasKey("msg") and msgj["msg"].getStr("") == "disconnect":
+    client.connected = false
+    server.needsUpdate = true
+  else:
+    let resp = server.handler(msgj, server.receivers)
+    if not resp.isNil:
+      if server.receivers == sender:
+        await client.socket.sendText($resp) #, false)
+      else:
+        server.msgs.add(($resp, client.id))
+        server.needsUpdate = true
+
+proc processClient(server: Server, client: Client) {.async.} =
+  while client.connected:
+    var frameFut = client.socket.readData()
+    yield frameFut
+    if frameFut.failed:
+      error("Error occurred handling client messages.\n" &
+            frameFut.error.msg)
+      client.connected = false
+      break
+
+    let frame = frameFut.read()
+    if frame.opcode == Opcode.Text:
+      let processFut = processMessage(server, client, frame.data)
+      if processFut.failed:
+        echo processFut.error.getStackTrace()
+        error("Client ($1) attempted to send bad JSON? " % $client & "\n" &
+              processFut.error.msg)
+        #client.connected = false
+  await client.socket.close()
+
+proc onRequest(server: Server, req: Request; key: string) {.async.} =
+  let (ws, error) = await verifyWebsocketRequest(req, key)
+  if ws != nil:
+    hint("Client connected from " & req.hostname)
+    ws.protocol = key
+    server.clients.add(newClient(server, ws, req.hostname))
+    asyncCheck processClient(server, server.clients[^1])
+  else:
+    warn("WS negotiation failed: " & $error)
+    await req.respond(Http400, "WebSocket negotiation failed: " & $error)
+    req.client.close()
+
+proc serve*(key: string; handler: ReqHandler) =
+  let httpServer = newAsyncHttpServer()
+  let server = Server(clients: @[], msgs: @[], handler: handler, gid: 0)
+
+  proc cb(req: Request): Future[void] {.async, gcsafe.} =
+    await onRequest(server, req, key)
+
+  asyncCheck updateClients(server)
+  waitFor httpServer.serve(Port(8080), cb)

clients/nim/ormin/tests/compat.nim

@@ -0,0 +1,55 @@
+include system/inclrtl
+import macros
+
+proc transLastStmt(n, res, bracketExpr: NimNode): (NimNode, NimNode, NimNode) =
+  case n.kind
+  of nnkIfExpr, nnkIfStmt, nnkTryStmt, nnkCaseStmt:
+    result[0] = copyNimTree(n)
+    result[1] = copyNimTree(n)
+    result[2] = copyNimTree(n)
+    for i in ord(n.kind == nnkCaseStmt)..<n.len:
+      (result[0][i], result[1][^1], result[2][^1]) = transLastStmt(n[i], res, bracketExpr)
+  of nnkStmtList, nnkStmtListExpr, nnkBlockStmt, nnkBlockExpr, nnkWhileStmt,
+      nnkForStmt, nnkElifBranch, nnkElse, nnkElifExpr, nnkOfBranch, nnkExceptBranch:
+    result[0] = copyNimTree(n)
+    result[1] = copyNimTree(n)
+    result[2] = copyNimTree(n)
+    if n.len >= 1:
+      (result[0][^1], result[1][^1], result[2][^1]) = transLastStmt(n[^1], res, bracketExpr)
+  of nnkTableConstr:
+    result[1] = n[0][0]
+    result[2] = n[0][1]
+    if bracketExpr.len == 1:
+      bracketExpr.add([newCall(bindSym"typeof", newEmptyNode()), newCall(
+          bindSym"typeof", newEmptyNode())])
+    template adder(res, k, v) = res[k] = v
+    result[0] = getAst(adder(res, n[0][0], n[0][1]))
+  of nnkCurly:
+    result[2] = n[0]
+    if bracketExpr.len == 1:
+      bracketExpr.add(newCall(bindSym"typeof", newEmptyNode()))
+    template adder(res, v) = res.incl(v)
+    result[0] = getAst(adder(res, n[0]))
+  else:
+    result[2] = n
+    if bracketExpr.len == 1:
+      bracketExpr.add(newCall(bindSym"typeof", newEmptyNode()))
+    template adder(res, v) = res.add(v)
+    result[0] = getAst(adder(res, n))
+
+macro collect*(init, body: untyped): untyped =
+  let res = genSym(nskVar, "collectResult")
+  expectKind init, {nnkCall, nnkIdent, nnkSym}
+  let bracketExpr = newTree(nnkBracketExpr,
+    if init.kind == nnkCall: init[0] else: init)
+  let (resBody, keyType, valueType) = transLastStmt(body, res, bracketExpr)
+  if bracketExpr.len == 3:
+    bracketExpr[1][1] = keyType
+    bracketExpr[2][1] = valueType
+  else:
+    bracketExpr[1][1] = valueType
+  let call = newTree(nnkCall, bracketExpr)
+  if init.kind == nnkCall:
+    for i in 1 ..< init.len:
+      call.add init[i]
+  result = newTree(nnkStmtListExpr, newVarStmt(res, call), resBody, res)

clients/nim/ormin/tests/config.nims

@@ -0,0 +1 @@
+--path:"$projectDir/../../ormin"

clients/nim/ormin/tests/db_utils_case_quoted.sql

@@ -0,0 +1,26 @@
+-- lower case, upper case, and quoted table names
+  create table lower_table (
+    id integer primary key
+  );
+
+  CREATE TABLE UPPER_TABLE (
+    id integer primary key
+  );
+
+  -- std sql quoted table name
+  create table "Quoted Table" (
+    id integer primary key
+  );
+
+  -- sqlite quoted table name
+  create table `Quoted Table2` (
+    id integer primary key
+  );
+
+  create table "UPPER_QUOTED" (
+    id integer primary key
+  );
+
+  create table "A""B" (
+    id integer primary key
+  );

clients/nim/ormin/tests/forum_model_postgres.sql

@@ -0,0 +1,60 @@
+create table if not exists thread(
+  id serial primary key,
+  name varchar(100) not null,
+  views integer not null,
+  modified timestamp not null default CURRENT_TIMESTAMP
+);
+
+create unique index if not exists ThreadNameIx on thread (name);
+
+create table if not exists person(
+  id serial primary key,
+  name varchar(20) not null,
+  password varchar(32) not null,
+  email varchar(30) not null,
+  creation timestamp not null default CURRENT_TIMESTAMP,
+  salt varchar(128) not null,
+  status varchar(30) not null,
+  lastOnline timestamp not null default CURRENT_TIMESTAMP,
+  ban varchar(128) not null default ''
+);
+
+create unique index if not exists UserNameIx on person (name);
+
+create table if not exists post(
+  id serial primary key,
+  author integer not null,
+  ip varchar(20) not null,
+  header varchar(100) not null,
+  content varchar(1000) not null,
+  thread integer not null,
+  creation timestamp not null default CURRENT_TIMESTAMP,
+
+  foreign key (thread) references thread(id),
+  foreign key (author) references person(id)
+);
+
+create table if not exists session(
+  id serial primary key,
+  ip varchar(20) not null,
+  password varchar(32) not null,
+  userid integer not null,
+  lastModified timestamp not null default CURRENT_TIMESTAMP,
+  foreign key (userid) references person(id)
+);
+
+create table if not exists antibot(
+  id serial primary key,
+  ip varchar(20) not null,
+  answer varchar(30) not null,
+  created timestamp not null default CURRENT_TIMESTAMP
+);
+
+create table if not exists error(
+  uuid varchar(36) primary key,
+  message varchar(1000) not null,
+  created timestamp not null default CURRENT_TIMESTAMP
+);
+
+create index PersonStatusIdx on person(status);
+create index PostByAuthorIdx on post(thread, author);

clients/nim/ormin/tests/forum_model_sqlite.sql

@@ -0,0 +1,62 @@
+pragma foreign_keys = on;
+
+create table if not exists thread(
+  id integer primary key,
+  name varchar(100) not null,
+  views integer not null,
+  modified timestamp not null default (DATETIME('now'))
+);
+
+create unique index if not exists ThreadNameIx on thread (name);
+
+create table if not exists person(
+  id integer primary key,
+  name varchar(20) not null,
+  password varchar(32) not null,
+  email varchar(30) not null,
+  creation timestamp not null default (DATETIME('now')),
+  salt varchar(128) not null,
+  status varchar(30) not null,
+  lastOnline timestamp not null default (DATETIME('now')),
+  ban varchar(128) not null default ''
+);
+
+create unique index if not exists UserNameIx on person (name);
+
+create table if not exists post(
+  id integer primary key,
+  author integer not null,
+  ip varchar(20) not null,
+  header varchar(100) not null,
+  content varchar(1000) not null,
+  thread integer not null,
+  creation timestamp not null default (DATETIME('now')),
+
+  foreign key (thread) references thread(id),
+  foreign key (author) references person(id)
+);
+
+create table if not exists session(
+  id integer primary key,
+  ip varchar(20) not null,
+  password varchar(32) not null,
+  userid integer not null,
+  lastModified timestamp not null default (DATETIME('now')),
+  foreign key (userid) references person(id)
+);
+
+create table if not exists antibot(
+  id integer primary key,
+  ip varchar(20) not null,
+  answer varchar(30) not null,
+  created timestamp not null default (DATETIME('now'))
+);
+
+create table if not exists error(
+  uuid varchar(36) primary key,
+  message varchar(1000) not null,
+  created timestamp not null default (DATETIME('now'))
+);
+
+create index PersonStatusIdx on person(status);
+create index PostByAuthorIdx on post(thread, author);

clients/nim/ormin/tests/model_postgre.sql

@@ -0,0 +1,45 @@
+create table if not exists tb_serial(
+  typserial serial primary key,
+  typinteger integer not null
+);
+
+create table if not exists tb_boolean(
+  typboolean boolean not null
+);
+
+create table if not exists tb_float(
+  typfloat real not null
+);
+
+create table if not exists tb_string(
+  typstring text not null
+);
+
+create table if not exists tb_timestamp(
+  dt timestamp not null,
+  dtn timestamptz not null,
+  dtz timestamptz not null
+);
+
+create table if not exists tb_json(
+  typjson json not null
+);
+
+create table if not exists tb_composite_pk(
+  pk1 integer not null,
+  pk2 integer not null,
+  message text not null,
+  primary key (pk1, pk2)
+);
+
+create table if not exists tb_composite_fk(
+  id integer not null,
+  fk1 integer not null,
+  fk2 integer not null,
+  foreign key (fk1, fk2) references tb_composite_pk(pk1, pk2)
+);
+
+create table if not exists tb_nullable(
+  id integer primary key,
+  note text null
+);

clients/nim/ormin/tests/model_sqlite.sql

@@ -0,0 +1,48 @@
+create table if not exists tb_serial(
+  typserial integer primary key,
+  typinteger integer not null
+);
+
+create table if not exists tb_boolean(
+  typboolean boolean not null
+);
+
+create table if not exists tb_float(
+  typfloat real not null
+);
+
+create table if not exists tb_string(
+  typstring text not null
+);
+
+create table if not exists tb_timestamp(
+  dt1 timestamp not null,
+  dt2 timestamp not null
+);
+
+create table if not exists tb_json(
+  typjson json not null
+);
+
+create table if not exists tb_composite_pk(
+  pk1 integer not null,
+  pk2 integer not null,
+  message text not null,
+  primary key (pk1, pk2)
+);
+
+create table if not exists tb_composite_fk(
+  id integer not null,
+  fk1 integer not null,
+  fk2 integer not null,
+  foreign key (fk1, fk2) references tb_composite_pk(pk1, pk2)
+);
+create table if not exists tb_blob(
+  id integer primary key,
+  typblob blob not null
+);
+
+create table if not exists tb_nullable(
+  id integer primary key,
+  note text null
+);

clients/nim/ormin/tests/static_only_model.sql

@@ -0,0 +1,4 @@
+create table user_static (
+  id integer primary key,
+  name varchar(255) not null
+);

clients/nim/ormin/tests/tcommon.nim

@@ -0,0 +1,508 @@
+import unittest, json, strutils, strformat, sequtils, macros, times, os, math, unicode
+import ormin
+import ormin/db_utils
+
+when defined(postgre):
+  when defined(macosx):
+    {.passL: "-Wl,-rpath,/opt/homebrew/lib/postgresql@14".}
+  import db_connector/db_postgres as db_postgres
+
+  const backend = DbBackend.postgre
+  importModel(backend, "model_postgre")
+  const sqlFileName = "model_postgre.sql"
+  let db {.global.} = db_postgres.open("localhost", "test", "test", "test_ormin")
+else:
+  from db_connector/db_sqlite import exec, getValue
+
+  const backend = DbBackend.sqlite
+  importModel(backend, "model_sqlite")
+  const sqlFileName = "model_sqlite.sql"
+  # let db {.global.} = open(":memory:", "", "", "")
+  let db {.global.} = open("test.db", "", "", "")
+
+let
+  testDir = currentSourcePath.parentDir()
+  sqlFile = Path(testDir / sqlFileName)
+
+proc substr(s: string; start, length: int): string {.importSql.}
+
+let
+  min = -3
+  max = 3
+  serial_int_seqs = [(1, min), (2, 1), (3, 2), (4, max)]
+
+suite &"Test common database types and functions of {backend}":
+  discard
+
+suite "serial_insert":
+  setup:
+    db.dropTable(sqlFile, "tb_serial")
+    db.createTable(sqlFile, "tb_serial")
+
+  test "insert":
+    for i in serial_int_seqs:
+      query:
+        insert tb_serial(typinteger = ?i[1])
+    check db.getValue(sql"select count(*) from tb_serial") == $serial_int_seqs.len
+
+  test "json":
+    for i in serial_int_seqs:
+      let v = %*{"typinteger": i[1]}
+      query:
+        insert tb_serial(typinteger = %v["typinteger"])
+    check db.getValue(sql"select count(*) from tb_serial") == $serial_int_seqs.len
+
+
+suite "serial":
+  db.dropTable(sqlFile, "tb_serial")
+  db.createTable(sqlFile, "tb_serial")
+
+  let insertSql = sql"insert into tb_serial(typinteger) values (?)"
+  for (_, v) in serial_int_seqs:
+    db.exec(insertSql, v) 
+  doAssert db.getValue(sql"select count(*) from tb_serial") == $serial_int_seqs.len
+
+  test "query":
+    let res = query:
+      select tb_serial(typserial, typinteger)
+    check res == serial_int_seqs
+
+  test "where":
+    let
+      id = 1
+      res = query:
+        select tb_serial(typserial, typinteger)
+        where typserial == ?id
+    check res == serial_int_seqs.filterIt(it[0] == id)
+
+  test "json":
+    let res = query:
+      select tb_serial(typserial, typinteger)
+      produce json
+    check res == %*serial_int_seqs.mapIt(%*{"typserial": it[0], "typinteger": it[1]})
+
+  test "count":
+    let res = query:
+      select tb_serial(count(_))
+    check res[0] == serial_int_seqs.len
+
+  test "sum":
+    let res = query:
+      select tb_serial(sum(typinteger))
+    check res[0] == serial_int_seqs.mapIt(it[1]).sum()
+
+  test "avg":
+    let res = query:
+      select tb_serial(avg(typinteger))
+    check res[0] == serial_int_seqs.mapIt(it[1]).sum() / serial_int_seqs.len()
+
+  test "min":
+    let res = query:
+      select tb_serial(min(typinteger))
+    check res[0] == min
+
+  test "max":
+    let res = query:
+      select tb_serial(max(typinteger))
+    check res[0] == max
+
+  test "abs":
+    let res = query:
+      select tb_serial(abs(typinteger))
+    check res == serial_int_seqs.mapIt(abs(it[1]))
+
+
+let seqs = toSeq(1..3)
+
+suite "boolean_insert":
+  setup:
+    db.dropTable(sqlFile, "tb_boolean")
+    db.createTable(sqlFile, "tb_boolean")
+
+  test "insert":
+    for i in seqs:
+      let b = (i mod 2 == 0)
+      query:
+        insert tb_boolean(typboolean = ?b)
+    check db.getValue(sql"select count(*) from tb_boolean") == $seqs.len
+
+  test "json":
+    for i in seqs:
+      let b = %*{"typboolean": (i mod 2 == 0)}
+      query:
+        insert tb_boolean(typboolean = %b["typboolean"])
+    check db.getValue(sql"select count(*) from tb_boolean") == $seqs.len
+
+
+suite "boolean":
+  db.dropTable(sqlFile, "tb_boolean")
+  db.createTable(sqlFile, "tb_boolean")
+
+  proc toBool(x: int): bool =
+    if x mod 2 == 0: true else: false
+
+  proc toDbValue(x: int): auto =
+    when defined(postgre):
+      if x mod 2 == 0: "t" else: "f"
+    else:
+      if x mod 2 == 0: 1 else: 0
+
+  let insertSql = sql"insert into tb_boolean(typboolean) values (?)"
+  for i in seqs:
+    db.exec(insertSql, toDbValue(i))
+  doAssert db.getValue(sql"select count(*) from tb_boolean") == $seqs.len
+
+  test "query":
+    let res = query:
+      select tb_boolean(typboolean)
+    check res == seqs.mapIt(it mod 2 == 0)
+
+  test "where":
+    let
+      b = true
+      res = query:
+        select tb_boolean(typboolean)
+        where typboolean == ?b
+    check res == seqs.map(toBool).filterIt(it == b)
+
+  test "json":
+    let res = query:
+      select tb_boolean(typboolean)
+      produce json
+    check res == %*seqs.mapIt(%*{"typboolean": toBool(it)})
+
+  when defined(sqlite):
+    test "importSql substr wrong type":
+      ## TODO: should this be allowed?
+      let res = query:
+        select tb_boolean(substr(typboolean, 1, 2))
+      echo "res: ", res
+
+let fs = [-3.14, 2.56, 10.45]
+
+suite "float_insert":
+  setup:
+    db.dropTable(sqlFile, "tb_float")
+    db.createTable(sqlFile, "tb_float")
+
+  test "insert":
+    for f in fs:
+      query:
+        insert tb_float(typfloat = ?f)
+    check db.getValue(sql"select count(*) from tb_float") == $fs.len
+
+  test "json":
+    for f in fs:
+      let v = %*{"typfloat": f}
+      query:
+        insert tb_float(typfloat = %v["typfloat"])
+    check db.getValue(sql"select count(*) from tb_float") == $fs.len
+
+
+suite "float":
+  db.dropTable(sqlFile, "tb_float")
+  db.createTable(sqlFile, "tb_float")
+
+  let insertSql = sql"insert into tb_float(typfloat) values (?)"
+  for f in fs:
+    db.exec(insertSql, f)
+  doAssert db.getValue(sql"select count(*) from tb_float") == $fs.len
+
+  test "query":
+    let res = query:
+      select tb_float(typfloat)
+    check res == fs
+
+  test "where":
+    let res = query:
+      select tb_float(typfloat)
+      where typfloat == ?fs[0]
+    check res == [fs[0]]
+
+  test "json":
+    let res = query:
+      select tb_float(typfloat)
+      produce json
+    check res == %*fs.mapIt(%*{"typfloat": it})
+
+  test "abs":
+    let res = query:
+      select tb_float(abs(typfloat))
+    check res == fs.mapIt(abs(it))
+
+let ss = ["one", "Two", "three", "第四", "four'th"]
+
+suite "string_insert":
+  setup:
+    db.dropTable(sqlFile, "tb_string")
+    db.createTable(sqlFile, "tb_string")
+
+  test "insert":
+    for v in ss:
+      query:
+        insert tb_string(typstring = ?v)
+    check db.getValue(sql"select count(*) from tb_string") == $ss.len
+
+  test "insert":
+    for v in ss:
+      query:
+        insert tb_string(typstring = "can't touch this")
+    check db.getValue(sql"select count(*) from tb_string") == $ss.len
+
+  test "json":
+    for v in ss:
+      let j = %*{"typstring": v}
+      query:
+        insert tb_string(typstring = %j["typstring"])
+    check db.getValue(sql"select count(*) from tb_string") == $ss.len
+
+suite "string":
+  db.dropTable(sqlFile, "tb_string")
+  db.createTable(sqlFile, "tb_string")
+
+  let insertsql = sql"insert into tb_string(typstring) values (?)"
+  for v in ss:
+    db.exec(insertsql, v)
+  doAssert db.getValue(sql"select count(*) from tb_string") == $ss.len
+
+  test "query":
+    let res = query:
+      select tb_string(typstring)
+    check res == ss
+
+  test "where":
+    let res = query:
+      select tb_string(typstring)
+      where typstring == ?ss[0]
+    check res[0] == ss[0]
+
+  test "json":
+    let res = query:
+      select tb_string(typstring)
+      produce json
+    check res == %*ss.mapIt(%*{"typstring": it})
+
+  test "concat_op":
+    let
+      s = "typstring: "
+    let res = query:
+      select tb_string(?s & typstring)
+    check res == ss.mapIt(s & it)
+    
+  test "length":
+    let res = query:
+      select tb_string(length(typstring))
+    check res == ss.mapIt(it.runeLen)
+
+  test "lower":
+    let res = query:
+      select tb_string(lower(typstring))
+    check res == ss.mapIt(it.toLowerAscii)
+
+  test "upper":
+    let res = query:
+      select tb_string(upper(typstring))
+    check res == ss.mapIt(it.toUpperAscii)
+
+  test "replace":
+    let res = query:
+      select tb_string(replace(typstring, "e", "o"))
+    check res == ss.mapIt(it.replace("e", "o"))
+
+  test "importSql substr length 0":
+    let res = query:
+      select tb_string(substr(typstring, 1, 0))
+    let expected = ss.mapIt($(toRunes(it)[0..<0]))
+    check res == expected
+
+  test "importSql substr length no arg types checked":
+    # TODO: fixme!
+    # the `functions` array only contains the types of the return
+    # but sqlite doesn't really care...
+    let res = query:
+      select tb_string(substr(typstring, "1", 2))
+    let expected = ss.mapIt($(toRunes(it)[0..<2]))
+    check res == expected
+
+let js = [
+  %*{"name": "tom", "age": 30},
+  %*{"name": "bob", "age": 35},
+  %*{"name": "jack", "age": 23} 
+]
+
+suite "insert_json":
+  setup:
+    db.dropTable(sqlFile, "tb_json")
+    db.createTable(sqlFile, "tb_json")
+
+  test "insert":
+    for j in js:
+      query:
+        insert tb_json(typjson = ?j)
+    check db.getValue(sql"select count(*) from tb_json") == $js.len
+
+suite "json":
+  db.dropTable(sqlFile, "tb_json")
+  db.createTable(sqlFile, "tb_json")
+  
+  let insertSql = sql"insert into tb_json(typjson) values (?)"
+  for j in js:
+    db.exec(insertSql, j)
+  doAssert db.getValue(sql"select count(*) from tb_json") == $js.len
+
+  test "query":
+    let res = query:
+      select tb_json(typjson)
+    check res == js
+
+  test "json":
+    let res = query:
+      select tb_json(typjson)
+      produce json
+    check res == %*js.mapIt(%*{"typjson": it})
+
+
+let cps = [
+  (1, 1, "one-one"),
+  (1, 2, "one-two"),
+  (2, 1, "two-one")
+]
+
+suite "composite_pk_insert":
+  setup:
+    db.dropTable(sqlFile, "tb_composite_pk")
+    db.createTable(sqlFile, "tb_composite_pk")
+
+  test "insert":
+    for r in cps:
+      query:
+        insert tb_composite_pk(pk1 = ?r[0], pk2 = ?r[1], message = ?r[2])
+    check db.getValue(sql"select count(*) from tb_composite_pk") == $cps.len
+
+  test "json":
+    for r in cps:
+      let v = %*{"pk1": r[0], "pk2": r[1], "message": r[2]}
+      query:
+        insert tb_composite_pk(pk1 = %v["pk1"], pk2 = %v["pk2"], message = %v["message"])
+    check db.getValue(sql"select count(*) from tb_composite_pk") == $cps.len
+
+
+suite "composite_pk":
+  db.dropTable(sqlFile, "tb_composite_pk")
+  db.createTable(sqlFile, "tb_composite_pk")
+
+  let insertSql = sql"insert into tb_composite_pk(pk1, pk2, message) values (?, ?, ?)"
+  for r in cps:
+    db.exec(insertSql, r[0], r[1], r[2])
+  doAssert db.getValue(sql"select count(*) from tb_composite_pk") == $cps.len
+
+  test "query":
+    let res = query:
+      select tb_composite_pk(pk1, pk2, message)
+    check res == cps
+
+  test "where":
+    let res = query:
+      select tb_composite_pk(pk1, pk2, message)
+      where pk1 == ?cps[0][0]
+    check res == cps.filterIt(it[0] == cps[0][0])
+
+  test "json":
+    let res = query:
+      select tb_composite_pk(pk1, pk2, message)
+      produce json
+    check res == %*cps.mapIt(%*{"pk1": it[0], "pk2": it[1], "message": it[2]})
+
+
+suite "nullable":
+  setup:
+    db.dropTable(sqlFile, "tb_nullable")
+    db.createTable(sqlFile, "tb_nullable")
+    query:
+      insert tb_nullable(id = 1, note = nil)
+    query:
+      insert tb_nullable(id = 2, note = "hello")
+
+  test "where_null":
+    let res = query:
+      select tb_nullable(id)
+      where note == nil
+    check res == @[1]
+
+  test "where_not_null":
+    let res = query:
+      select tb_nullable(id)
+      where note != null
+    check res == @[2]
+
+  test "update_to_null":
+    query:
+      update tb_nullable(note = null)
+      where id == 2
+    let res = query:
+      select tb_nullable(id)
+      where note == nil
+    check res == @[1, 2]
+
+  test "json_null":
+    let res = query:
+      select tb_nullable(id, note)
+      orderby id
+      produce json
+    check res[0]["note"].kind == JNull
+    check res[1]["note"].getStr == "hello"
+
+suite "upsert":
+  setup:
+    db.dropTable(sqlFile, "tb_nullable")
+    db.createTable(sqlFile, "tb_nullable")
+
+  test "onconflict do nothing":
+    let first = "first value"
+    query:
+      insert tb_nullable(id = 1, note = ?first)
+
+    let ignored = "should not overwrite"
+    query:
+      insert tb_nullable(id = 1, note = ?ignored)
+      onconflict(id)
+      donothing()
+
+    let note = db.getValue(sql"select note from tb_nullable where id = 1")
+    check note == first
+
+  test "onconflict do update":
+    let first = "old note"
+    query:
+      insert tb_nullable(id = 2, note = ?first)
+
+    let replacement = "new note"
+    query:
+      insert tb_nullable(id = 2, note = ?replacement)
+      onconflict(id)
+      doupdate(note = ?replacement)
+
+    let note = db.getValue(sql"select note from tb_nullable where id = 2")
+    check note == replacement
+
+  test "onconflict do update where":
+    query:
+      insert tb_nullable(id = 3, note = "keep-me")
+
+    query:
+      insert tb_nullable(id = 3, note = "replace-me")
+      onconflict(id)
+      doupdate(note = "replace-me")
+      where note != "keep-me"
+
+    let note = db.getValue(sql"select note from tb_nullable where id = 3")
+    check note == "keep-me"
+
+static:
+  doAssert not compiles(
+    (block:
+      query:
+        insert tb_nullable(id = 100, note = "x")
+        where id == 100
+    )
+  )

clients/nim/ormin/tests/tdb_utils.nim

@@ -0,0 +1,166 @@
+import unittest, os, sequtils
+import db_connector/db_common
+from db_connector/db_sqlite import open, exec, getValue
+import ormin/db_utils
+
+const usesLegacySqliteDropNames = defined(sqlite) and defined(orminLegacySqliteDropNames)
+
+let
+  db {.global.} = open(":memory:", "", "", "")
+  testDir = currentSourcePath.parentDir()
+  sqlFile = Path(testDir / "db_utils_case_quoted.sql")
+
+let sqlContent = """
+-- lower case, upper case, and quoted table names
+  create table lower_table (
+    id integer primary key
+  );
+
+  CREATE TABLE UPPER_TABLE (
+    id integer primary key
+  );
+
+  -- std sql quoted table name
+  create table "Quoted Table" (
+    id integer primary key
+  );
+
+  -- sqlite quoted table name
+  create table `Quoted Table2` (
+    id integer primary key
+  );
+
+  create table "UPPER_QUOTED" (
+    id integer primary key
+  );
+
+  create table "A""B" (
+    id integer primary key
+  );
+"""
+
+const staticSqlContent = staticLoad("db_utils_case_quoted.sql")
+
+writeFile($sqlFile, sqlContent)
+
+suite "db_utils: case and quoted names":
+  test "staticLoad returns typed compile-time SQL":
+    let loaded: DbSql = staticSqlContent
+    check $loaded == sqlContent
+
+  test "quoteDbIdentifier quotes and escapes identifiers":
+    check $quoteDbIdentifier("lower_table") == "lower_table"
+    check $quoteDbIdentifier("UPPER_TABLE") == "upper_table"
+    check $quoteDbIdentifier("\"Quoted Table\"") == "\"Quoted Table\""
+    check $quoteDbIdentifier("`Quoted Table2`") == "\"Quoted Table2\""
+    check $quoteDbIdentifier("'Quoted Table3'") == "\"Quoted Table3\""
+    check $quoteDbIdentifier("\"UPPER_TABLE\"") == "\"UPPER_TABLE\""
+    check $quoteDbIdentifier("\"A\"\"B\"") == "\"A\"\"B\""
+    check $quoteDbIdentifier("schema.table") == "schema.table"
+    check $quoteDbIdentifier("Schema.\"Mixed Table\"") == "schema.\"Mixed Table\""
+    check $quoteDbIdentifier("weird\"name") == "\"weird\"\"name\""
+
+  test "check tables names":
+    let pairs = tablePairs(sqlContent).toSeq()
+    check pairs.len == 6
+    check pairs[0][0] == ("lower_table")
+    check pairs[1][0] == ("upper_table")
+    check pairs[2][0] == ("quoted table")
+    check pairs[3][0] == ("quoted table2")
+    check pairs[4][0] == ("upper_quoted")
+    check pairs[5][0] == ("a\"b")
+
+    check pairs[0][1] == "create table lower_table(id  integer  primary key );"
+    check pairs[1][1] == "create table UPPER_TABLE(id  integer  primary key );"
+    check pairs[2][1] == "create table \"Quoted Table\"(id  integer  primary key );"
+    check pairs[4][1] == "create table \"UPPER_QUOTED\"(id  integer  primary key );"
+    check pairs[5][1] == "create table \"A\"\"B\"(id  integer  primary key );"
+
+  test "tablePairs parses compile-time SQL":
+    let pairs = tablePairs(staticSqlContent).toSeq()
+    check pairs.len == 6
+    check pairs[0][0] == "lower_table"
+    check pairs[1][0] == "upper_table"
+    check pairs[2][0] == "quoted table"
+    check pairs[3][0] == "quoted table2"
+    check pairs[4][0] == "upper_quoted"
+    check pairs[5][0] == "a\"b"
+
+  test "createTable creates all tables from SQL file":
+    db.createTable(sqlFile)
+    let countAll = db.getValue(sql"select count(*) from sqlite_master where type='table' and name in ('lower_table','UPPER_TABLE','Quoted Table')")
+    check countAll == "3"
+
+  test "createTable with specific lowercased name matches quoted":
+    # Use a new in-memory DB for isolation
+    let db2 = open(":memory:", "", "", "")
+    db2.createTable(sqlFile, "quoted table")
+    let countQuoted = db2.getValue(sql"select count(*) from sqlite_master where type='table' and name = 'Quoted Table'")
+    check countQuoted == "1"
+
+  test "createTable creates all tables from compile-time SQL":
+    let db2 = open(":memory:", "", "", "")
+    db2.createTable(staticSqlContent)
+    let countAll = db2.getValue(sql("select count(*) from sqlite_master where type='table' and name in ('lower_table','UPPER_TABLE','Quoted Table','Quoted Table2','UPPER_QUOTED','A\"B')"))
+    check countAll == "6"
+
+  test "createTable with specific lowercased name matches quoted from compile-time SQL":
+    let db2 = open(":memory:", "", "", "")
+    db2.createTable(staticSqlContent, "quoted table")
+    let countQuoted = db2.getValue(sql"select count(*) from sqlite_master where type='table' and name = 'Quoted Table'")
+    check countQuoted == "1"
+
+  test "dropTable handles quoted names from SQL file":
+    let db2 = open(":memory:", "", "", "")
+    db2.createTable(sqlFile)
+    db2.dropTable(sqlFile, "quoted table2")
+    let countQuoted = db2.getValue(sql"select count(*) from sqlite_master where type='table' and name = 'Quoted Table2'")
+    when usesLegacySqliteDropNames:
+      check countQuoted == "1"
+    else:
+      check countQuoted == "0"
+
+    db2.dropTable(sqlFile, "upper_quoted")
+    let countUpperQuoted = db2.getValue(sql"select count(*) from sqlite_master where type='table' and name = 'UPPER_QUOTED'")
+    when usesLegacySqliteDropNames:
+      check countUpperQuoted == "1"
+    else:
+      check countUpperQuoted == "0"
+
+    db2.dropTable(sqlFile, "a\"b")
+    let countEscapedQuoted = db2.getValue(sql("select count(*) from sqlite_master where type='table' and name = 'A\"B'"))
+    when usesLegacySqliteDropNames:
+      check countEscapedQuoted == "1"
+    else:
+      check countEscapedQuoted == "0"
+
+  test "dropTable removes tables from compile-time SQL":
+    let db2 = open(":memory:", "", "", "")
+    db2.createTable(staticSqlContent)
+    db2.dropTable(staticSqlContent, "quoted table2")
+    let countQuoted = db2.getValue(sql"select count(*) from sqlite_master where type='table' and name = 'Quoted Table2'")
+    when usesLegacySqliteDropNames:
+      check countQuoted == "1"
+    else:
+      check countQuoted == "0"
+
+    db2.dropTable(staticSqlContent, "upper_quoted")
+    let countUpperQuoted = db2.getValue(sql"select count(*) from sqlite_master where type='table' and name = 'UPPER_QUOTED'")
+    when usesLegacySqliteDropNames:
+      check countUpperQuoted == "1"
+    else:
+      check countUpperQuoted == "0"
+
+    db2.dropTable(staticSqlContent, "a\"b")
+    let countEscapedQuoted = db2.getValue(sql("select count(*) from sqlite_master where type='table' and name = 'A\"B'"))
+    when usesLegacySqliteDropNames:
+      check countEscapedQuoted == "1"
+    else:
+      check countEscapedQuoted == "0"
+
+    db2.dropTable(staticSqlContent)
+    let countAll = db2.getValue(sql("select count(*) from sqlite_master where type='table' and name in ('lower_table','UPPER_TABLE','Quoted Table','Quoted Table2','UPPER_QUOTED','A\"B')"))
+    when usesLegacySqliteDropNames:
+      check countAll == "3"
+    else:
+      check countAll == "0"

clients/nim/ormin/tests/tfeature.nim

@@ -0,0 +1,822 @@
+import unittest, strformat, sequtils, algorithm, sugar, json, tables, random
+import os
+import ormin
+import ormin/db_utils
+when NimVersion < "1.2.0": import ./compat
+
+
+let testDir = currentSourcePath.parentDir()
+
+when defined postgre:
+  when defined(macosx):
+    {.passL: "-Wl,-rpath,/opt/homebrew/lib/postgresql@14".}
+  from db_connector/db_postgres import exec, getValue
+
+  const backend = DbBackend.postgre
+  importModel(backend, "forum_model_postgres")
+  const sqlFileName = "forum_model_postgres.sql"
+  let db {.global.} = open("localhost", "test", "test", "test_ormin")
+else:
+  from db_connector/db_sqlite import exec, getValue
+
+  const backend = DbBackend.sqlite
+  importModel(backend, "forum_model_sqlite")
+  const sqlFileName = "forum_model_sqlite.sql"
+  var memoryPath = testDir & "/" & ":memory:"
+  let db {.global.} = open(memoryPath, "", "", "")
+
+var sqlFilePath = Path(testDir & "/" & sqlFileName)
+
+type
+  Person = tuple[id: int,
+                name: string,
+                password: string,
+                email: string,
+                salt: string,
+                status: string]
+  Thread = tuple[id: int,
+                name: string,
+                views: int]
+  Post = tuple[id: int,
+              author: int,
+              ip: string,
+              header: string,
+              content: string,
+              thread: int]
+  Antibot = tuple[id: int,
+                  ip: string,
+                  answer: string]
+
+const
+  personcount = 5
+  threadcount = 5
+  postcount = 10
+  antibotcount = 5
+var
+  persondata: seq[Person]
+  threaddata: seq[Thread]
+  postdata: seq[Post]
+  antibotdata: seq[Antibot]   
+
+
+suite &"Test ormin features of {backend}":
+  discard
+
+suite "query":
+  db.dropTable(sqlFilePath)
+  db.createTable(sqlFilePath)
+
+  static:
+    doAssert compiles(block:
+      discard query:
+        select post(author)
+        crossjoin person(name)
+    )
+    doAssert compiles(block:
+      discard query:
+        select post(author)
+        outerjoin person(name) on author == id
+    )
+    doAssert compiles(block:
+      discard query:
+        select post(author)
+        leftjoin person(name) on author == id
+    )
+    doAssert compiles(block:
+      discard query:
+        select post(author)
+        leftouterjoin person(name) on author == id
+    )
+    doAssert compiles(block:
+      discard query:
+        select post(author)
+        rightjoin person(name) on author == id
+    )
+    doAssert compiles(block:
+      discard query:
+        select post(author)
+        rightouterjoin person(name) on author == id
+    )
+    doAssert compiles(block:
+      discard query:
+        select post(author)
+        fulljoin person(name) on author == id
+    )
+    doAssert compiles(block:
+      discard query:
+        select post(author)
+        fullouterjoin person(name) on author == id
+    )
+
+  # prepare data to insert  
+  for i in 1..personcount:
+    persondata.add((id: i,
+                    name: fmt"john{i}",
+                    password: fmt"pass{i}",
+                    email: fmt"john{i}@mail.com",
+                    salt: fmt"abcd{i}",
+                    status: fmt"ok{i}"))
+
+  for i in 1..threadcount:
+    threaddata.add((id: i,
+                    name: fmt"thread{i}",
+                    views: i))
+
+  for i in 1..postcount:
+    postdata.add((id: i,
+                  author: sample({1..personcount}),
+                  ip: "",
+                  header: fmt"title{i}",
+                  content: fmt"content{i}",
+                  thread: sample({1..threadcount})))
+
+  for i in 1..antibotcount:
+    antibotdata.add((id: i,
+                    ip: "",
+                    answer: fmt"answer{i}"))
+
+  # insert data into database
+  let
+    insertperson = sql"insert into person (id, name, password, email, salt, status) values (?, ?, ?, ?, ?, ?)"
+    insertthread = sql"insert into thread (id, name, views) values (?, ?, ?)"
+    insertpost = sql"insert into post (id, author, ip, header, content, thread) values (?, ?, ?, ?, ?, ?)"
+    insertantibot = sql"insert into antibot (id, ip, answer) values (?, ?, ?)"
+
+  for p in persondata:
+    db.exec(insertperson, p.id, p.name, p.password, p.email, p.salt, p.status)
+
+  for t in threaddata:
+    db.exec(insertthread, t.id, t.name, t.views)
+
+  for p in postdata:
+    db.exec(insertpost, p.id, p.author, p.ip, p.header, p.content, p.thread)
+
+  for a in antibotdata:
+    db.exec(insertantibot, a.id, a.ip, a.answer)
+
+  # check data in database
+  let personexpected = db.getValue(sql"select count(*) from person")
+  assert personexpected == $personcount
+
+  let threadexpected = db.getValue(sql"select count(*) from thread")
+  assert threadexpected == $threadcount
+
+  let postexpected = db.getValue(sql"select count(*) from post")
+  assert postexpected == $postcount
+
+  let antibotexpected = db.getValue(sql"select count(*) from antibot")
+  assert antibotexpected == $antibotcount
+
+  test "table":
+    let res = query:
+      select person(id, name, password, email, salt, status)
+    check res == persondata
+
+  test "all_column":
+    let res = query:
+      select person(_)
+    check res.mapIt((it.id, it.name, it.password, it.email, it.salt, it.status)) == persondata
+  
+  test "column_alias":
+    let res = query:
+      select person(id as personid, name as personname)
+    check res == persondata.mapIt((personid: it.id, personname: it.name))
+
+  test "arithmetic":
+    let res = query:
+      select person(id * 4 / 2 + 2 - 1 as id)
+    check res == persondata.mapIt(int(it.id * 4 / 2 + 2 - 1))
+
+  test "comparison":
+    let id = 1
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      where id == ?id
+    check res == [persondata[id - 1]]
+
+  test "comparison_ne":
+    let id = 1
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      where id != ?id
+    check res == persondata.filterIt(it.id != id)
+
+  test "comparison_ge":
+    let id = 3
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      where id >= ?id
+    check res == persondata.filterIt(it.id >= id)
+
+  test "comparison_le":
+    let id = 3
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      where id <= ?id
+    check res == persondata.filterIt(it.id <= id)
+
+  test "comparison_gt":
+    let id = 3
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      where id > ?id
+    check res == persondata.filterIt(it.id > id)
+
+  test "comparison_lt":
+    let id = 3
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      where id < ?id
+    check res == persondata.filterIt(it.id < id)
+
+  test "logical_not":
+    let id = 3
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      where not (id > ?id)
+    check res == persondata.filterIt(it.id <= id)
+
+  test "logical_and":
+    let
+      id1 = 2
+      id2 = 4
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      where id >= ?id1 and id <= ?id2
+    check res == persondata.filterIt(it.id >= id1 and it.id <= id2)
+
+  test "logical_or":
+    let
+      id1 = 2
+      id2 = 4
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      where id == ?id1 or id == ?id2
+    check res == persondata.filterIt(it.id == id1 or it.id == id2)
+
+  test "logical_complex":
+    let
+      id1 = 2
+      id2 = 3
+      id3 = 4
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      where id > ?id2 and (id == ?id1 or id == ?id3)
+    check res == persondata.filterIt(it.id == id3)
+
+  test "predicate_in":
+    let
+      id1 = 2
+      id2 = 4
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      where id in ?id1 .. ?id2
+    check res == persondata.filterIt(it.id in id1..id2)
+
+  test "predicate_not_in":
+    let
+      id1 = 2
+      id2 = 4
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      where id notin ?id1 .. ?id2
+    check res == persondata.filterIt(it.id < id1 or it.id > id2)
+
+  test "predicate_like":
+    let pattern = "john1%"
+    let res = query:
+      select person(id, name)
+      where name `like` ?pattern
+    check res == persondata.filterIt(it.name.startsWith("john1")).mapIt((it.id, it.name))
+
+  test "predicate_ilike":
+    let pattern = "JOHN1%"
+    let res = query:
+      select person(id, name)
+      where name `ilike` ?pattern
+    check res == persondata.filterIt(it.name.startsWith("john1")).mapIt((it.id, it.name))
+
+  test "predicate_not_like":
+    let pattern = "john1%"
+    let res = query:
+      select person(id, name)
+      where not (name `like` ?pattern)
+    check res == persondata.filterIt(not it.name.startsWith("john1")).mapIt((it.id, it.name))
+
+  test "distinct":
+    var res = query:
+      select `distinct` post(author)
+    res.sort()
+    let expected = postdata.mapIt(it.author).deduplicate().sortedByIt(it)
+    check res == expected
+
+  test "count_distinct":
+    let res = query:
+      select post(count(distinct author))
+    check res == @[postdata.mapIt(it.author).deduplicate().len]
+
+  test "window_row_number":
+    let res = query:
+      select post(author, id, over(row_number(), partitionby(author), orderby(id)) as rn)
+      orderby author, id
+    var expected: seq[(int, int, int)] = @[]
+    var counters = initCountTable[int]()
+    for p in postdata.sortedByIt((it.author, it.id)):
+      counters.inc(p.author)
+      expected.add((p.author, p.id, counters[p.author]))
+    check res == expected
+
+  test "window_running_sum":
+    let res = query:
+      select post(author, id, over(sum(id), partitionby(author), orderby(id)) as running)
+      orderby author, id
+    var expected: seq[(int, int, int)] = @[]
+    var sums = initTable[int, int]()
+    for p in postdata.sortedByIt((it.author, it.id)):
+      sums[p.author] = sums.getOrDefault(p.author) + p.id
+      expected.add((p.author, p.id, sums[p.author]))
+    check res == expected
+
+  test "limit":
+    let id = 1
+    let res = query:
+      select person(id, name, password, email, salt, status)
+      limit 1
+    static:
+      echo "LIMIT TEST: ", typeof(res)
+    check res == persondata[id - 1]
+
+  test "offset":
+    let res = query:
+      select person(id, name)
+      limit 2
+      offset 2
+    check res == persondata[2..3].mapIt((it.id, it.name))
+
+  test "match_assignment":
+    let id = 1
+    let (name, password, email, salt, status) = query:
+      select person(name, password, email, salt, status)
+      where id == ?id
+      limit 1
+    check:
+      name == persondata[id - 1].name
+      password == persondata[id - 1].password
+      email == persondata[id - 1].email
+      salt == persondata[id - 1].salt
+      status == persondata[id - 1].status
+
+  test "groupby":
+    let res = query:
+      select post(author, count(id))
+      groupby author
+    let counttable = postdata.mapIt(it.author).toCountTable()
+    for (author, c) in res:
+      check counttable[author] == c
+
+  test "groupby_aggregate":
+    let author = 3
+    let res = query:
+      select post(count(id))
+      where author == ?author
+      groupby author
+    let c = postdata.mapIt(it.author).toCountTable()[author]
+    check res == [c]
+
+  test "orderby":
+    let res = query:
+      select person(id, name)
+      orderby id
+    check res == persondata.mapIt((it.id, it.name)).sortedByIt(it[0])
+
+  test "orderby_asc":
+    let res = query:
+      select person(id, name)
+      orderby asc(id)
+    check res == persondata.mapIt((it.id, it.name)).sortedByIt(it[0])
+
+  test "orderby_desc":
+    let res = query:
+      select person(id, name)
+      orderby desc(id)
+    let expected = persondata.mapIt((it.id, it.name))
+                            .sorted((x, y) => system.cmp(x[0], y[0]), Descending) 
+    check res == expected
+
+  test "orderby_key_select":
+    let res = query:
+      select person(id as personid, name)
+      orderby personid
+    check res == persondata.mapIt((it.id, it.name)).sortedByIt(it[0])
+
+  test "orderby_key_not_select":
+    let res = query:
+      select person(name)
+      orderby id
+    check res == persondata.sortedByIt(it.id).mapIt(it.name)
+
+  test "orderby_mulitple":
+    # test fix #30 Incorrect handling of multiple sort keys in orderby
+    let res = query:
+      select post(author, id)
+      orderby author, desc(id)
+    check res == postdata.mapIt((it.author, it.id))
+                        .sorted((x, y) => system.cmp(x[1], y[1]), Descending)
+                        .sortedByIt(it[0])
+
+  test "having":
+    let id = 4
+    let res = query:
+      select post(author, count(_) as count)
+      groupby author
+      having author == ?id
+    let expected = collect(newSeq):
+      for p in postdata.mapIt(it.author).toCountTable().pairs():
+        if p[0] == id: p
+    check res == expected
+
+  test "having_aggregate":
+    let countvalue = 2
+    let res = query:
+      select post(author, count(id) as count)
+      groupby author
+      having count(id) >= ?countvalue
+    let expected = collect(newSeq):
+      for p in postdata.mapIt(it.author).toCountTable().pairs():
+        if p[1] >= countvalue: p
+    check res.sortedByIt(it[0])  == expected.sortedByIt(it[0])
+
+  test "having_complex":
+    let
+      authorid1 = 1
+      authorid2 = 3
+      countvalue = 2
+    let res = query:
+      select post(author, count(id) as count)
+      groupby author
+      having count(id) >= ?countvalue and (author == ?authorid1 or author == ?authorid2)
+    let expected = collect(newSeq):
+      for p in postdata.mapIt(it.author).toCountTable().pairs():
+        if p[0] in [authorid1, authorid2] and p[1] >= countvalue: p
+    check res == expected
+
+  test "subquery":
+    let res = query:
+      select post(id)
+      where author in
+        (select person(id))
+    check res.sortedByIt(it) == postdata.mapIt(it.id)
+
+  test "subquery_nest2":
+    let
+      personid1 = 1
+      personid2 = 2
+      expectedpost = postdata.filterIt(it.author in [personid1, personid2])
+                            .mapIt(it.id)
+    let res = query:
+      select post(id)
+      where author in
+        (select person(id) where id == ?personid1 or id == ?personid2)
+    check res.sortedByIt(it) == expectedpost.sortedByIt(it)
+
+  test "subquery_nest3":
+    var res = query:
+      select thread(id)
+      where id in (select post(thread) where author in
+        (select person(id) where id in {1, 2}))
+    res.sort()
+    check res == postdata.filterIt(it.author in [1, 2])
+                        .mapIt(it.thread)
+                        .sortedByIt(it)
+
+  test "subquery_having":
+    # feature for having in subquery
+    let id = 4
+    let res = query:
+      select person(id)
+      where id in (
+        select post(author) groupby author having author == ?id)
+    check res == @[id]
+
+  test "exists":
+    let authorid = postdata[0].author
+    let res = query:
+      select person(id)
+      where exists(select post(id) where author == ?authorid)
+    check res.sortedByIt(it) == persondata.mapIt(it.id)
+
+  test "not_exists":
+    let missingAuthor = personcount + postcount
+    let res = query:
+      select person(id)
+      where not exists(select post(id) where author == ?missingAuthor)
+    check res.sortedByIt(it) == persondata.mapIt(it.id)
+
+  test "with_cte":
+    let res = query:
+      with recent(select post(id, author) where id <= 3)
+      select recent(author)
+      orderby id
+    check res == postdata.filterIt(it.id <= 3).sortedByIt(it.id).mapIt(it.author)
+
+  test "with_cte_chain":
+    let res = query:
+      with recent(select post(id, author) where id <= 3)
+      with authors(select recent(author))
+      select authors(author)
+    check res.sortedByIt(it) == postdata.filterIt(it.id <= 3).mapIt(it.author).sortedByIt(it)
+
+  test "with_cte_subquery":
+    let res = query:
+      with recent(select post(id, author) where id <= 3)
+      select person(id)
+      where id in (select recent(author))
+    check res.sortedByIt(it) == postdata.filterIt(it.id <= 3).mapIt(it.author).deduplicate().sortedByIt(it)
+
+  test "union":
+    var res = query:
+      select person(id) where id <= 2
+      union
+      select person(id) where id >= 4
+    res.sort()
+    check res == @[1, 2, 4, 5]
+
+    res = query:
+      union(
+        select person(id) where id <= 2,
+        select person(id) where id >= 4
+      )
+    res.sort()
+    check res == @[1, 2, 4, 5]
+
+  test "intersect":
+    var res = query:
+      select person(id) where id <= 3
+      intersect
+      select person(id) where id >= 2
+    res.sort()
+    check res == @[2, 3]
+
+    res = query:
+      intersect(
+        select person(id) where id <= 3,
+        select person(id) where id >= 2
+      )
+    res.sort()
+    check res == @[2, 3]
+
+  test "except":
+    var res = query:
+      select person(id) where id <= 4
+      `except`
+      select person(id) where id in {2, 3}
+    res.sort()
+    check res == @[1, 4]
+
+    res = query:
+      `except`(
+        select person(id) where id <= 4,
+        select person(id) where id in {2, 3}
+      )
+    res.sort()
+    check res == @[1, 4]
+      
+  test "complex_query_subquery_having":
+    let
+      id1 = 2
+      id2 = 3
+    let res = query:
+      select thread(count(_))
+      where id in (
+        select post(thread) where (author == ?id1 or author == ?id2) and id in (
+          select post(min(id)) groupby thread having min(id) > 3))
+      limit 1
+
+    let threadinpost = postdata.mapIt(it.thread).deduplicate().sortedByIt(it)
+    var postminids: seq[int]    
+    for id in threadinpost:
+      let group = collect(newSeq):
+        for p in postdata:
+          if p.thread == id: p.id
+      postminids.add(group.min())
+    let threadids = postdata.filterIt(it.author in [id1, id2] and
+                                    it.id in postminids.filterIt(it > 3))
+                            .mapIt(it.thread)
+    check res == threadids.len()
+
+  test "auto_join":
+    let postid = 1
+    let res = query:
+      select post(author)
+      join person(name)
+      where id == ?postid
+    let (author, name) = res[0]
+    check name == persondata[author - 1].name
+
+  test "join_on":
+    # test fix #29 Cannot handle join on condition correctly
+    let postid = 1
+    let res = query:
+      select post(author)
+      join person(name) on author == id
+      where id == ?postid
+    let (author, name) = res[0]
+    check name == persondata[author - 1].name
+
+  test "leftjoin_on":
+    let postid = 1
+    let res = query:
+      select post(author)
+      leftjoin person(name) on author == id
+      where id == ?postid
+    let (author, name) = res[0]
+    check name == persondata[author - 1].name
+
+  test "leftouterjoin_on":
+    let postid = 1
+    let res = query:
+      select post(author)
+      leftouterjoin person(name) on author == id
+      where id == ?postid
+    let (author, name) = res[0]
+    check name == persondata[author - 1].name
+
+  test "casewhen":
+    # need more test, only number
+    # has problem with string or expression in condition
+    let res = query:
+      select person(name, (if id == 1: 10 elif id == 2: 20 else: 30) as pid)
+    check res == persondata.mapIt((
+                    name: it.name,
+                    pid: if it.id == 1: 10 elif it.id == 2: 20 else: 30))
+
+  test "produce_json":
+    # test fix #27 Error: type mismatch: got <typeof(nil)>
+    let threadjson = query:
+      select thread(id, name)
+      produce json
+    let expected = threaddata.map do (it: tuple) -> JsonNode:
+      result = newJObject()
+      result["id"] = %it.id
+      result["name"] = %it.name
+    check threadjson == %expected
+
+  test "produce_nim":
+    let threadnim = query:
+      select thread(id, name)
+      produce nim
+    check threadnim == threaddata.mapIt((it.id, it.name))
+
+  test "tryquery":
+    # unknow use, only not raise dbError?
+    let res = tryQuery:
+      select thread(id)
+    check res == threaddata.mapIt(it.id)
+
+  test "createproc":
+    createProc getAllThreadIds:
+      select thread(id)
+    check db.getAllThreadIds() == threaddata.mapIt(it.id)
+
+  test "createiter":
+    createIter allThreadIdsIter:
+      select thread(id)
+    let res = collect(newSeq):
+      for id in db.allThreadIdsIter:
+        id
+    check res.sortedByIt(it) == threaddata.mapIt(it.id)
+
+  test "update_concat_op":
+    let
+      id = 3
+      name = persondata[id - 1].name
+      appendstr = "updated"
+      nameupdated = name & appendstr
+    query:
+      update person(name = name & ?appendstr)
+      where id == ?id
+    let res = query:
+      select person(name)
+      where id == ?id
+    check res[0] == nameupdated
+
+  test "delete_one":
+    # test fix #14: delete not return value
+    let id = 1
+    query:
+      delete antibot
+      where id == ?id
+    let res = query:
+      select antibot(_)
+      where id == ?id
+    check res == []
+
+  test "delete_all":
+    query:
+      delete antibot
+    let res = query:
+      select antibot(_)
+    check res == []
+
+  test "insert_return_id":
+    # test fix #28 returning id fail under postgresql 
+      let expectedid = 6
+      let id = query:
+        insert antibot(id = ?expectedid, ip = "", answer = "just insert")
+        returning id
+      check id == expectedid
+
+  test "insert_return_answer":
+    # test returning non-id parameter
+      let expectedanswer = "just insert another"
+      let answer = query:
+        insert antibot(id = 9, ip = "", answer = ?expectedanswer)
+        returning answer
+      check answer == expectedanswer
+
+  test "insert_return_id_auto":
+    # test returning id column
+      when defined(postgre):
+        # fix postgres sequence so next nextval returns 10
+        discard db.getValue(sql"select setval('antibot_id_seq', ?, ?)", 10, false)
+      let answer = query:
+        insert antibot(ip = "", answer = "just auto insert")
+        returning id
+      check answer == 10
+
+  test "insert_returning_uuid":
+    # test returning uuid column
+      let expecteduuid = "123e4567-e89b-12d3-a456-426614174000"
+      let uuid = query:
+        insert error(uuid = ?expecteduuid, message = "just insert")
+        returning uuid
+      check uuid == expecteduuid
+
+  test "where_json":
+    let
+      id = 1
+      p = %*{"id": id}
+    let res = query:
+      select person(id)
+      where id == %p["id"]
+    check res == [id]
+
+  test "insert_json":
+    let
+      id = 7
+      answer = "json answer"
+      a = %*{"answer": answer}
+    query:
+      insert antibot(id = ?id, ip = "", answer = %a["answer"])
+    let res = query:
+      select antibot(answer)
+      where id == ?id
+    check res[0] == answer
+
+  test "update_json":
+    let
+      id = 3
+      name = "json"
+      p = %*{"name": name}
+    query:
+      update person(name = %p["name"])
+      where id == ?id
+    let res = query:
+      select person(name)
+      where id == ?id
+    check res[0] == name
+  
+  test "insert_rawsql":
+    let id = 8
+    query:
+      insert antibot(id = ?id, ip = "", answer = !!"'raw sql'",
+                    created = !!"CURRENT_TIMESTAMP")
+    let res = query:
+      select antibot(_)
+      where id == ?id
+    check res[0].answer == "raw sql"
+
+  test "update_rawsql":
+    let id = 3
+    let res = query:
+      select person(name)
+      where id == ?id
+    query:
+      update person(name = !!"UPPER(name)")
+      where id == ?id
+    let res2 = query:
+      select person(name)
+      where id == ?id
+    check res[0] != res2[0]
+    check res[0].toUpper() == res2[0]
+  test "empty_string":
+    db.exec(insertthread, 6, "", 77)
+
+    createProc getAllThreads:
+      select thread(id, name, views)
+      where id >= 5
+
+    let rows = db.getAllThreads
+    check rows[1].id == 6 
+    check rows[1].views == 77
+    check rows[1].name == ""

clients/nim/ormin/tests/timportstatic.nim

@@ -0,0 +1,29 @@
+import unittest
+import ormin/ormin_sqlite as orm_sqlite
+from db_connector/db_sqlite import exec, getValue
+
+import ormin
+
+importModel(DbBackend.sqlite, "static_only_model", includeStatic = true)
+
+let db {.global.} = orm_sqlite.open(":memory:", "", "", "")
+
+suite "importModel includeStatic":
+  test "sqlSchema is generated and usable without a generated Nim model":
+    let schema: DbSql = sqlSchema
+    check ($schema).len > 0
+
+    db.createTable(sqlSchema)
+    db.exec(sql"insert into user_static (id, name) values (?, ?)", 1, "Ada")
+
+    let row = query:
+      select user_static(id, name)
+      where id == 1
+      limit 1
+
+    check row.id == 1
+    check row.name == "Ada"
+    check db.getValue(sql"select count(*) from sqlite_master where type='table' and name = 'user_static'") == "1"
+
+    db.dropTable(sqlSchema, "user_static")
+    check db.getValue(sql"select count(*) from sqlite_master where type='table' and name = 'user_static'") == "0"

clients/nim/ormin/tests/tpostgre.nim

@@ -0,0 +1,130 @@
+import unittest, json, strutils, macros, times, os, sequtils
+# Postgres connection handled through ormin_postgre backend
+from db_connector/db_postgres import exec, getValue
+import ormin
+import ormin/ormin_postgre as ormin_postgre
+# import db_connector/db_postgres as db_postgres
+import ormin/db_utils
+
+when defined(macosx):
+  {.passL: "-Wl,-rpath,/opt/homebrew/lib/postgresql@14".}
+
+
+importModel(DbBackend.postgre, "model_postgre")
+
+let
+  db {.global.} = ormin_postgre.open("localhost", "test", "test", "test_ormin")
+  testDir = currentSourcePath.parentDir()
+  sqlFile = Path(testDir / "model_postgre.sql")
+
+
+suite "Test special database types and functions of postgre":
+  discard
+
+let
+  dtStr1 = "2018-03-30 01:01:01"
+  dt1 = parse(dtStr1, "yyyy-MM-dd HH:mm:ss")
+  dtnStr1 = "2019-03-30 11:02:02+08"
+  dtn1 = parse(dtnStr1, "yyyy-MM-dd HH:mm:sszz")
+  dtzStr1 = "2020-03-30 09:03:03Z"
+  dtz1 = parse(dtzStr1, "yyyy-MM-dd HH:mm:sszz")
+  dtStr2 = "2018-03-30 01:01:01.123"
+  dt2 = parse(dtStr2, "yyyy-MM-dd HH:mm:ss\'.\'fff")
+  dtnStr2 = "2019-03-30 11:02:02.123+08"
+  dtn2 = parse(dtnStr2, "yyyy-MM-dd HH:mm:ss\'.\'fffzz")
+  dtzStr2 = "2020-03-30 09:03:03.123Z"
+  dtz2 = parse(dtzStr2, "yyyy-MM-dd HH:mm:ss\'.\'fffzz")
+  dtStr3 = "2018-03-30 01:01:01.123456"
+  dt3 = parse(dtStr3, "yyyy-MM-dd HH:mm:ss\'.\'ffffff")
+  dtnStr3 = "2019-03-30 11:02:02.123456+08"
+  dtn3 = parse(dtnStr3, "yyyy-MM-dd HH:mm:ss\'.\'ffffffzz")
+  dtzStr3 = "2020-03-30 09:03:03.123456Z"
+  dtz3 = parse(dtzStr3, "yyyy-MM-dd HH:mm:ss\'.\'ffffffzz")
+  dtjson1 = %*{"dt": dt1.format(jsonTimeFormat),
+              "dtn": dtn1.format(jsonTimeFormat),
+              "dtz": dtz1.format(jsonTimeFormat)}
+  dtjson2 = %*{"dt": dt2.format(jsonTimeFormat),
+              "dtn": dtn2.format(jsonTimeFormat),
+              "dtz": dtz2.format(jsonTimeFormat)}
+  dtjson3 = %*{"dt": dt3.format(jsonTimeFormat),
+              "dtn": dtn3.format(jsonTimeFormat),
+              "dtz": dtz3.format(jsonTimeFormat)}
+
+let insertSql =  sql"insert into tb_timestamp(dt, dtn, dtz) values (?, ?, ?)"
+            
+suite "timestamp_insert":
+  setup:
+    db.dropTable(sqlFile, "tb_timestamp")
+    db.createTable(sqlFile, "tb_timestamp")
+
+  test "insert":
+    query:
+      insert tb_timestamp(dt = ?dt1, dtn = ?dtn1, dtz = ?dtz1)
+    check db_postgres.getValue(db, sql"select count(*) from tb_timestamp") == "1"
+
+  test "json":
+    query:
+      insert tb_timestamp(dt = %dtjson1["dt"],
+                          dtn = %dtjson1["dtn"],
+                          dtz = %dtjson1["dtz"])
+    check db_postgres.getValue(db, sql"select count(*) from tb_timestamp") == "1"
+
+suite "timestamp":
+  db.dropTable(sqlFile, "tb_timestamp")
+  db.createTable(sqlFile, "tb_timestamp")
+
+  db_postgres.exec(db, insertSql, dtStr1, dtnStr1, dtzStr1)
+  db_postgres.exec(db, insertSql, dtStr2, dtnStr2, dtzStr2)
+  db_postgres.exec(db, insertSql, dtStr3, dtnStr3, dtzStr3)
+  doAssert db_postgres.getValue(db, sql"select count(*) from tb_timestamp") == "3"
+
+  test "query":
+    let res = query:
+      select tb_timestamp(dt, dtn, dtz)
+    check res == [(dt1, dtn1, dtz1),
+                  (dt2, dtn2, dtz2),
+                  (dt3, dtn3, dtz3)]
+
+  test "where":
+    let res = query:
+      select tb_timestamp(dt)
+      where dt == ?dt1
+    check res == [dt1]
+
+  test "in":
+    let
+      duration = initDuration(hours = 1)
+      dtStart = dt1 - duration
+      dtEnd = dt1 + duration
+      res2 = query:
+        select tb_timestamp(dt)
+        where dt in ?dtStart .. ?dtEnd
+    check res2 == [dt1, dt2, dt3]
+
+  test "iter":
+    createIter iter:
+      select tb_timestamp(dt)
+      where dt == ?dt
+    var res: seq[DateTime]
+    for it in db.iter(dt1):
+      res.add(it)
+    check res == [dt1]
+
+  test "proc":
+    createProc aproc:
+      select tb_timestamp(dt)
+      where dt == ?dt
+    check db.aproc(dt1) == [dt1]
+
+  test "json":
+    let res = query:
+      select tb_timestamp(dt, dtn, dtz)
+      produce json
+    check res == %*[dtjson1, dtjson2, dtjson3]
+  
+  test "json_where":
+    let res = query:
+      select tb_timestamp(dt, dtn, dtz)
+      where dt == %dtjson1["dt"]
+      produce json
+    check res[0] == dtjson1

clients/nim/ormin/tests/tquery_types.nim

@@ -0,0 +1,216 @@
+import unittest, strformat, os, times, std/monotimes
+import std/options
+import ormin
+import ormin/db_utils
+import ormin/query_hooks
+
+when defined(postgre):
+  when defined(macosx):
+    {.passL: "-Wl,-rpath,/opt/homebrew/lib/postgresql@14".}
+  const backend = DbBackend.postgre
+  importModel(backend, "model_postgre")
+  const sqlFileName = "model_postgre.sql"
+  let db {.global.} = open("localhost", "test", "test", "test_ormin")
+else:
+  const backend = DbBackend.sqlite
+  importModel(backend, "model_sqlite")
+  const sqlFileName = "model_sqlite.sql"
+  let db {.global.} = open("test.db", "", "", "")
+
+let
+  testDir = currentSourcePath.parentDir()
+  sqlFile = Path(testDir / sqlFileName)
+
+type
+  CompositeRow = object
+    id: int
+    message: string
+
+  RefCompositeRow = ref object
+    id: int
+    message: string
+
+  BenchmarkCompositeRow = object
+    pk1: int
+    message: string
+
+  NullableNoteOptionRow = object
+    id: int
+    note: Option[string]
+
+  MessageSize = distinct int
+
+  HookedMessageRow = object
+    id: int
+    message: MessageSize
+
+  NullFallbackNote = distinct string
+
+  HookedNullableNoteRow = object
+    id: int
+    note: NullFallbackNote
+
+const
+  benchmarkRowCount = 256
+  benchmarkWarmupIterations = 75
+  benchmarkIterations = 250
+  benchmarkRounds = 5
+  maxTypedQuerySlowdown = 1.20
+
+proc fromQueryHook*(val: var MessageSize, value: string) =
+  val = MessageSize(value.len)
+
+proc fromQueryHook*(val: var NullFallbackNote, value: DbValue[string]) =
+  if value.isNull:
+    val = NullFallbackNote("<missing>")
+  else:
+    val = NullFallbackNote("note:" & value.value)
+
+proc loadBenchmarkRows() =
+  db.dropTable(sqlFile, "tb_composite_pk")
+  db.createTable(sqlFile, "tb_composite_pk")
+  for i in 1 .. benchmarkRowCount:
+    let message = &"message-{i}"
+    query:
+      insert tb_composite_pk(pk1 = ?i, pk2 = ?i, message = ?message)
+
+proc benchmarkCurrentQuery(iterations: int): float =
+  var checksum = 0
+  let started = getMonoTime()
+  for _ in 0 ..< iterations:
+    let rows = query:
+      select tb_composite_pk(pk1, message)
+      orderby pk1
+    checksum += rows.len + rows[^1][0] + rows[^1][1].len
+  doAssert checksum > 0
+  result = (getMonoTime() - started).inNanoseconds.float / 1_000_000_000.0
+
+proc benchmarkTypedQuery(iterations: int): float =
+  var checksum = 0
+  let started = getMonoTime()
+  for _ in 0 ..< iterations:
+    let rows = query(BenchmarkCompositeRow):
+      select tb_composite_pk(pk1, message)
+      orderby pk1
+    checksum += rows.len + rows[^1].pk1 + rows[^1].message.len
+  doAssert checksum > 0
+  result = (getMonoTime() - started).inNanoseconds.float / 1_000_000_000.0
+
+suite &"query(T) mapping on {backend}":
+  setup:
+    db.dropTable(sqlFile, "tb_composite_pk")
+    db.createTable(sqlFile, "tb_composite_pk")
+    db.dropTable(sqlFile, "tb_nullable")
+    db.createTable(sqlFile, "tb_nullable")
+
+    query:
+      insert tb_composite_pk(pk1 = 1, pk2 = 1, message = "hello")
+    query:
+      insert tb_composite_pk(pk1 = 2, pk2 = 2, message = "world")
+
+    query:
+      insert tb_nullable(id = 1, note = nil)
+    query:
+      insert tb_nullable(id = 2, note = "hello")
+
+  test "maps selected rows to objects":
+    let rows = query(CompositeRow):
+      select tb_composite_pk(pk1 as id, message)
+      orderby pk1
+
+    check rows == @[
+      CompositeRow(id: 1, message: "hello"),
+      CompositeRow(id: 2, message: "world")
+    ]
+
+  test "maps selected rows to ref objects":
+    let rows = query(RefCompositeRow):
+      select tb_composite_pk(pk1 as id, message)
+      orderby pk1
+
+    check rows.len == 2
+    check rows[0] != nil
+    check rows[0].id == 1
+    check rows[0].message == "hello"
+    check rows[1] != nil
+    check rows[1].id == 2
+    check rows[1].message == "world"
+
+  test "single-row query(T) returns a single object":
+    let row = query(CompositeRow):
+      select tb_composite_pk(pk1 as id, message)
+      where pk1 == 1 and pk2 == 1
+      limit 1
+
+    check row == CompositeRow(id: 1, message: "hello")
+
+  test "maps nullable column to Option":
+    let rows = query(NullableNoteOptionRow):
+      select tb_nullable(id, note)
+      orderby id
+
+    check rows[0].id == 1
+    check rows[0].note.isNone
+    check rows[1].id == 2
+    check rows[1].note.isSome
+    check rows[1].note.get == "hello"
+
+  test "maps object fields through user fromQueryHook overloads":
+    let rows = query(HookedMessageRow):
+      select tb_composite_pk(pk1 as id, message)
+      orderby pk1
+
+    check rows.len == 2
+    check rows[0].id == 1
+    check int(rows[0].message) == "hello".len
+    check rows[1].id == 2
+    check int(rows[1].message) == "world".len
+
+  test "maps scalar query(T) through user fromQueryHook overloads":
+    let values = query(MessageSize):
+      select tb_composite_pk(message)
+      orderby pk1
+
+    check values.len == 2
+    check int(values[0]) == "hello".len
+    check int(values[1]) == "world".len
+
+  test "allows user fromQueryHook overloads to handle NULL values":
+    let rows = query(HookedNullableNoteRow):
+      select tb_nullable(id, note)
+      orderby id
+
+    check rows.len == 2
+    check rows[0].id == 1
+    check string(rows[0].note) == "<missing>"
+    check rows[1].id == 2
+    check string(rows[1].note) == "note:hello"
+
+  test "sqlite benchmark for query and query(T)":
+      loadBenchmarkRows()
+
+      let untypedRows = query:
+        select tb_composite_pk(pk1, message)
+        orderby pk1
+      let typedRows = query(BenchmarkCompositeRow):
+        select tb_composite_pk(pk1, message)
+        orderby pk1
+      check untypedRows.len == typedRows.len
+      check typedRows[0] == BenchmarkCompositeRow(pk1: untypedRows[0][0], message: untypedRows[0][1])
+      check typedRows[^1] == BenchmarkCompositeRow(pk1: untypedRows[^1][0], message: untypedRows[^1][1])
+
+      discard benchmarkCurrentQuery(benchmarkWarmupIterations)
+      discard benchmarkTypedQuery(benchmarkWarmupIterations)
+
+      var currentBest = high(float)
+      var typedBest = high(float)
+      for _ in 0 ..< benchmarkRounds:
+        currentBest = min(currentBest, benchmarkCurrentQuery(benchmarkIterations))
+        typedBest = min(typedBest, benchmarkTypedQuery(benchmarkIterations))
+
+      let ratio = typedBest / currentBest
+      echo &"sqlite benchmark query={currentBest:.6f}s query(T)={typedBest:.6f}s ratio={ratio:.3f}x; 20% budget={(ratio <= maxTypedQuerySlowdown)}"
+      check currentBest > 0.0
+      check typedBest > 0.0
+      when defined(release):
+        check ratio <= maxTypedQuerySlowdown

clients/nim/ormin/tests/tsqlite.nim

@@ -0,0 +1,153 @@
+import unittest, db_connector/sqlite3, json, times, sequtils
+from db_connector/db_sqlite import exec, getValue
+import ormin
+import ormin/db_utils
+
+importModel(DbBackend.sqlite, "model_sqlite")
+
+let
+  db {.global.} = open(":memory:", "", "", "")
+  testDir = currentSourcePath.parentDir()
+  sqlFile = Path(testDir / "model_sqlite.sql")
+
+
+suite "Test special database types and functions of sqlite":
+  discard
+
+jsonTimeFormat = "yyyy-MM-dd HH:mm:ss\'.\'fff"
+let
+  dtStr1 = "2018-02-20 02:02:02"
+  dt1 = parse(dtStr1, "yyyy-MM-dd HH:mm:ss", utc())
+  dtStr2 = "2019-03-30 03:03:03.123"
+  dt2 = parse(dtStr2, "yyyy-MM-dd HH:mm:ss\'.\'fff", utc())
+  dtjson = %*{"dt1": dt1.format(jsonTimeFormat),
+              "dt2": dt2.format(jsonTimeFormat)}
+let insertSql =  sql"insert into tb_timestamp(dt1, dt2) values (?, ?)"
+
+proc blobFromBytes(bytes: openArray[int]): seq[byte] =
+  result = newSeq[byte](bytes.len)
+  for i, b in bytes:
+    doAssert b >= 0 and b <= 255
+    result[i] = byte(b)
+
+let blobFixtures = [
+  blobFromBytes(@[0, 1, 2, 3, 4, 5, 6, 7]),
+  blobFromBytes(@[255, 128, 64, 32, 16, 8, 4, 2, 1]),
+  blobFromBytes(@[ord('O'), ord('R'), ord('M'), ord('I'), ord('N'), 0, 1, 2])
+]
+
+suite "timestamp_insert":
+  setup:
+    db.dropTable(sqlFile, "tb_timestamp")
+    db.createTable(sqlFile, "tb_timestamp")
+
+  test "insert":
+    query:
+      insert tb_timestamp(dt1 = ?dt1, dt2 = ?dt2)
+    check db.getValue(sql"select count(*) from tb_timestamp") == "1"
+
+  test "json":
+    query:
+      insert tb_timestamp(dt1 = %dtjson["dt1"], dt2 = %dtjson["dt2"])
+    check db.getValue(sql"select count(*) from tb_timestamp") == "1"
+
+suite "timestamp":
+  db.dropTable(sqlFile, "tb_timestamp")
+  db.createTable(sqlFile, "tb_timestamp")
+
+  db.exec(insertSql, dtStr1, dtStr2)
+  doAssert db.getValue(sql"select count(*) from tb_timestamp") == "1"
+
+  test "query":
+    let res = query:
+      select tb_timestamp(dt1, dt2)
+    check res == [(dt1, dt2)]
+
+  test "where":
+    let res = query:
+      select tb_timestamp(dt1, dt2)
+      where dt1 == ?dt1
+    check res == [(dt1, dt2)]
+
+  test "in":
+    let
+      duration = initDuration(hours = 1)
+      dtStart = dt1 - duration
+      dtEnd = dt1 + duration
+      res2 = query:
+        select tb_timestamp(dt1, dt2)
+        where dt1 in ?dtStart .. ?dtEnd
+    check res2 == [(dt1, dt2)]
+
+  test "iter":
+    createIter iter:
+      select tb_timestamp(dt1, dt2)
+      where dt1 == ?dt1
+    var res: seq[tuple[dt1: DateTime, dt2: DateTime]]
+    for it in db.iter(dt1):
+      res.add(it)
+    check res == [(dt1, dt2)]
+
+  test "proc":
+    createProc aproc:
+      select tb_timestamp(dt1, dt2)
+      where dt1 == ?dt1
+    check db.aproc(dt1) == [(dt1, dt2)]
+
+  test "json":
+    let res = query:
+      select tb_timestamp(dt1, dt2)
+      produce json
+    check res == %*[dtjson]
+  
+  test "json_where":
+    let res = query:
+      select tb_timestamp(dt1, dt2)
+      where dt1 == %dtjson["dt1"]
+      produce json
+    check res == %*[dtjson]
+
+suite "blob_insert":
+  setup:
+    db.dropTable(sqlFile, "tb_blob")
+    db.createTable(sqlFile, "tb_blob")
+
+  test "insert parameters":
+    for blob in blobFixtures:
+      query:
+        insert tb_blob(typblob = ?blob)
+    check db.getValue(sql"select count(*) from tb_blob") == $blobFixtures.len
+
+suite "blob":
+  db.dropTable(sqlFile, "tb_blob")
+  db.createTable(sqlFile, "tb_blob")
+
+  for blob in blobFixtures:
+    query:
+      insert tb_blob(typblob = ?blob)
+  doAssert db.getValue(sql"select count(*) from tb_blob") == $blobFixtures.len
+
+  test "query":
+    let res = query:
+      select tb_blob(id, typblob)
+    check res.mapIt(it.typblob) == blobFixtures
+
+  test "where":
+    let target = blobFixtures[1]
+    let res = query:
+      select tb_blob(id, typblob)
+      where typblob == ?target
+    check res.len == 1
+    check res[0].typblob == target
+
+  createProc selectAllBlob:
+    select tb_blob(id, typblob)
+
+  test "createProc":
+    let res = db.selectAllBlob
+    check res.mapIt(it.typblob) == blobFixtures
+
+  test "createProc with empty blob in result":
+    db.exec(sql"insert into tb_blob(id, typblob) values (?, ?)", 9, "")
+    let res = db.selectAllBlob
+    check res[^1].typblob == blobFromBytes(@[])

clients/nim/ormin/tests/ttransactions.nim

@@ -0,0 +1,132 @@
+import unittest, os, strformat
+import ormin
+import ormin/db_utils
+when NimVersion < "1.2.0": import ./compat
+
+let testDir = currentSourcePath.parentDir()
+
+when defined postgre:
+  when defined(macosx):
+    {.passL: "-Wl,-rpath,/opt/homebrew/lib/postgresql@14".}
+  from db_connector/db_postgres import exec, getValue
+  const backend = DbBackend.postgre
+  importModel(backend, "forum_model_postgres")
+  const sqlFileName = "forum_model_postgres.sql"
+  let db {.global.} = open("localhost", "test", "test", "test_ormin")
+else:
+  from db_connector/db_sqlite import exec, getValue
+  const backend = DbBackend.sqlite
+  importModel(backend, "forum_model_sqlite")
+  const sqlFileName = "forum_model_sqlite.sql"
+  var memoryPath = testDir & "/" & ":memory:"
+  let db {.global.} = open(memoryPath, "", "", "")
+
+var sqlFilePath = Path(testDir & "/" & sqlFileName)
+
+# Fresh schema
+db.dropTable(sqlFilePath)
+db.createTable(sqlFilePath)
+
+suite &"Transactions ({backend})":
+
+  test "commit on success":
+    transaction:
+      query:
+        insert person(id = ?(101), name = ?"john101", password = ?"p101", email = ?"john101@mail.com", salt = ?"s101", status = ?"ok")
+    check db.getValue(sql"select count(*) from person where id = 101") == "1"
+
+  test "rollback on error with manual try except":
+    # prepare one row
+    query:
+      insert person(id = ?(201), name = ?"john201", password = ?"p201", email = ?"john201@mail.com", salt = ?"s201", status = ?"ok")
+    # in transaction insert a new row and then violate PK
+    try:
+      transaction:
+        query:
+          insert person(id = ?(202), name = ?"john202", password = ?"p202", email = ?"john202@mail.com", salt = ?"s202", status = ?"ok")
+        # duplicate key error
+        query:
+          insert person(id = ?(201), name = ?"dup", password = ?"p", email = ?"e", salt = ?"s", status = ?"x")
+      check false # should not reach
+    except DbError as e:
+      discard
+    # both inserts inside the transaction should be rolled back
+    check db.getValue(sql"select count(*) from person where id = 202") == "0"
+    check db.getValue(sql"select count(*) from person where id = 201 and name = 'dup'") == "0"
+
+  test "rollback on error with else":
+    # prepare one row
+    var failed = false
+    query:
+      insert person(id = ?(501), name = ?"john501", password = ?"p501", email = ?"john501@mail.com", salt = ?"s501", status = ?"ok")
+    # in transaction insert a new row and then violate PK
+    transaction:
+      query:
+        insert person(id = ?(502), name = ?"john502", password = ?"p502", email = ?"john502@mail.com", salt = ?"s502", status = ?"ok")
+      # duplicate key error
+      query:
+        insert person(id = ?(501), name = ?"dup", password = ?"p", email = ?"e", salt = ?"s", status = ?"x")
+      check false # should not reach
+    else:
+      echo "do something else..."
+      failed = true
+
+    check failed
+    # both inserts inside the transaction should be rolled back
+    check db.getValue(sql"select count(*) from person where id = 502") == "0"
+    check db.getValue(sql"select count(*) from person where id = 501 and name = 'dup'") == "0"
+
+  test "commit normally with else":
+    # prepare one row
+    var failed = false
+    query:
+      insert person(id = ?(601), name = ?"john601", password = ?"p601", email = ?"john601@mail.com", salt = ?"s601", status = ?"ok")
+    # in transaction insert a new row and then violate PK
+    transaction:
+      query:
+        insert person(id = ?(602), name = ?"john602", password = ?"p602", email = ?"john602@mail.com", salt = ?"s602", status = ?"ok")
+      query:
+        insert person(id = ?(603), name = ?"dup", password = ?"p", email = ?"e", salt = ?"s", status = ?"x")
+    else:
+      failed = true
+
+    check not failed
+    # both inserts inside the transaction should be rolled back
+    check db.getValue(sql"select count(*) from person where id = 603") == "1"
+    check db.getValue(sql"select count(*) from person where id = 602") == "1"
+    check db.getValue(sql"select count(*) from person where id = 601") == "1"
+
+  test "transaction set false on DbError":
+    var failed = false
+    transaction:
+      query:
+        insert person(id = ?(301), name = ?"john301", password = ?"p301", email = ?"john301@mail.com", salt = ?"s301", status = ?"ok")
+      query:
+        insert person(id = ?(301), name = ?"dup", password = ?"p", email = ?"e", salt = ?"s", status = ?"x")
+    else:
+      failed = true
+    check failed
+    check db.getValue(sql"select count(*) from person where id = 301") == "0"
+
+  test "nested savepoints":
+    var failed = false
+    transaction:
+      query:
+        insert person(id = ?(401), name = ?"john401", password = ?"p401", email = ?"john401@mail.com", salt = ?"s401", status = ?"ok")
+      var innerOk = true
+      transaction:
+        query:
+          insert person(id = ?(402), name = ?"john402", password = ?"p402", email = ?"john402@mail.com", salt = ?"s402", status = ?"ok")
+        query:
+          insert person(id = ?(401), name = ?"dup401", password = ?"p", email = ?"e", salt = ?"s", status = ?"x")
+      else:
+        innerOk = false
+
+      check innerOk == false
+
+      # after inner rollback, we can still insert another row and commit outer
+      query:
+        insert person(id = ?(403), name = ?"john403", password = ?"p403", email = ?"john403@mail.com", salt = ?"s403", status = ?"ok")
+    else:
+      failed = true
+    check db.getValue(sql"select count(*) from person where id in (401,402,403)") == "2"

clients/nim/ormin/tools/ormin_importer.nim

@@ -0,0 +1,38 @@
+## Ormin -- ORM for Nim.
+## (c) 2017 Andreas Rumpf
+## MIT License.
+
+import strutils, os, parseopt
+
+import ../ormin/importer_core
+
+proc writeHelp() =
+  echo """
+ormin <schema.sql> --out:<file.nim>  --db:postgre|sqlite|mysql
+"""
+
+proc writeVersion() = echo "v1.0"
+
+var p = initOptParser()
+var infile = ""
+var outfile = ""
+var target: ImportTarget
+for kind, key, val in p.getopt():
+  case kind
+  of cmdArgument:
+    infile = key
+  of cmdLongOption, cmdShortOption:
+    case key
+    of "help", "h": writeHelp()
+    of "version", "v": writeVersion()
+    of "out", "o": outfile = val
+    of "db": target = parseEnum[ImportTarget](val)
+    else: discard
+  of cmdEnd: assert(false) # cannot happen
+if infile == "":
+  # no filename has been given, so we show the help:
+  writeHelp()
+else:
+  if outfile == "":
+    outfile = changeFileExt(infile, "nim")
+  writeFile(outfile, generateModelCode(readFile(infile), absolutePath(infile), target))

clients/nim/ormin/tools/setup_postgres.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Try default connection first, then fallback to -U postgres
+run_psql_file() {
+  local db="$1"; shift
+  local file="$1"; shift
+  if ! psql -v ON_ERROR_STOP=1 -d "$db" -f "$file" "$@" >/dev/null 2>&1; then
+    psql -v ON_ERROR_STOP=1 -U postgres -d "$db" -f "$file" "$@"
+  fi
+}
+
+run_psql_cmd() {
+  local db="$1"; shift
+  local cmd="$1"; shift
+  if ! psql -v ON_ERROR_STOP=1 -d "$db" -c "$cmd" "$@" >/dev/null 2>&1; then
+    psql -v ON_ERROR_STOP=1 -U postgres -d "$db" -c "$cmd" "$@"
+  fi
+}
+
+# Create role 'test' if needed
+run_psql_file postgres tools/setup_postgres_role.sql
+
+# Create database 'test' if needed (must be outside DO block)
+if ! psql -v ON_ERROR_STOP=1 -d postgres -tAc "SELECT 1 FROM pg_database WHERE datname = 'test_ormin'" | grep -q 1; then
+  run_psql_cmd postgres "CREATE DATABASE test_ormin OWNER test"
+fi
+
+# Grant privileges on public schema
+run_psql_cmd test_ormin "GRANT ALL PRIVILEGES ON SCHEMA public TO test"
+
+echo "Postgres test DB/user ensured (role 'test', db 'test_ormin')."
+

clients/nim/ormin/tools/setup_postgres.sql

@@ -0,0 +1,21 @@
+DO
+$$
+BEGIN
+   IF NOT EXISTS (SELECT FROM pg_roles WHERE rolname = 'test') THEN
+      CREATE ROLE test LOGIN PASSWORD 'test';
+   END IF;
+END
+$$;
+
+DO
+$$
+BEGIN
+   IF NOT EXISTS (SELECT FROM pg_database WHERE datname = 'test') THEN
+      CREATE DATABASE test OWNER test;
+   END IF;
+END
+$$;
+
+\connect test
+GRANT ALL PRIVILEGES ON SCHEMA public TO test;
+

clients/nim/ormin/tools/setup_postgres_role.sql

@@ -0,0 +1,9 @@
+DO
+$$
+BEGIN
+   IF NOT EXISTS (SELECT FROM pg_roles WHERE rolname = 'test') THEN
+      CREATE ROLE test LOGIN PASSWORD 'test';
+   END IF;
+END
+$$;
+

clients/nim/src/baradb/client.nim

@@ -108,6 +108,16 @@ proc readString(buf: openArray[byte], pos: var int): string =
     result[i] = char(buf[pos + i])
   pos += len
 
+proc toBytes(s: string): seq[byte] =
+  result = newSeq[byte](s.len)
+  for i, c in s:
+    result[i] = byte(c)
+
+proc toString(s: seq[byte]): string =
+  result = newString(s.len)
+  for i, b in s:
+    result[i] = char(b)
+
 proc serializeValue*(buf: var seq[byte], val: WireValue) =
   buf.add(byte(val.kind))
   case val.kind
@@ -289,7 +299,7 @@ proc close*(client: BaraClient) =
   if client.connected:
     try:
       let msg = buildMessage(mkClose, client.nextId(), @[])
-      waitFor client.socket.send(cast[string](msg))
+      waitFor client.socket.send(toString(msg))
     except: discard
     client.socket.close()
     client.connected = false
@@ -319,13 +329,13 @@ proc readQueryResponse(client: BaraClient): Future[QueryResult] {.async.} =
     raise newException(IOError, "Connection closed")
 
   var pos = 0
-  let hdrData = cast[seq[byte]](headerData)
+  let hdrData = toBytes(headerData)
   let kind = MsgKind(readUint32(hdrData, pos))
   let payloadLen = int(readUint32(hdrData, pos))
   discard readUint32(hdrData, pos)
 
   let payloadStr = await client.socket.recv(payloadLen)
-  var payload = cast[seq[byte]](payloadStr)
+  var payload = toBytes(payloadStr)
 
   result = QueryResult(columns: @[], rows: @[], rowCount: 0, affectedRows: 0)
 
@@ -360,14 +370,14 @@ proc readQueryResponse(client: BaraClient): Future[QueryResult] {.async.} =
     let compHeader = await client.socket.recv(12)
     if compHeader.len >= 12:
       var chPos = 0
-      let chData = cast[seq[byte]](compHeader)
+      let chData = toBytes(compHeader)
       let compKind = MsgKind(readUint32(chData, chPos))
       let compLen = int(readUint32(chData, chPos))
       discard readUint32(chData, chPos)
       let compPayloadStr = await client.socket.recv(compLen)
       if compKind == mkComplete:
         var cpPos = 0
-        result.affectedRows = int(readUint32(cast[seq[byte]](compPayloadStr), cpPos))
+        result.affectedRows = int(readUint32(toBytes(compPayloadStr), cpPos))
     return
   if kind == mkComplete:
     var rpos = 0
@@ -379,7 +389,8 @@ proc query*(client: BaraClient, sql: string): Future[QueryResult] {.async.} =
     raise newException(IOError, "Not connected")
 
   let msg = makeQueryMessage(client.nextId(), sql)
-  await client.socket.send(cast[string](msg))
+  let msgStr = toString(msg)
+  await client.socket.send(msgStr)
 
   return await client.readQueryResponse()
 
@@ -388,7 +399,8 @@ proc query*(client: BaraClient, sql: string, params: seq[WireValue]): Future[Que
     raise newException(IOError, "Not connected")
 
   let msg = makeQueryParamsMessage(client.nextId(), sql, params)
-  await client.socket.send(cast[string](msg))
+  let msgStr = toString(msg)
+  await client.socket.send(msgStr)
 
   return await client.readQueryResponse()
 
@@ -401,14 +413,15 @@ proc auth*(client: BaraClient, token: string) {.async.} =
     raise newException(IOError, "Not connected")
 
   let msg = makeAuthMessage(client.nextId(), token)
-  await client.socket.send(cast[string](msg))
+  let msgStr = toString(msg)
+  await client.socket.send(msgStr)
 
   let headerData = await client.socket.recv(12)
   if headerData.len < 12:
     raise newException(IOError, "Connection closed")
 
   var pos = 0
-  let hdrData = cast[seq[byte]](headerData)
+  let hdrData = toBytes(headerData)
   let kind = MsgKind(readUint32(hdrData, pos))
   let payloadLen = int(readUint32(hdrData, pos))
   discard readUint32(hdrData, pos)
@@ -418,7 +431,7 @@ proc auth*(client: BaraClient, token: string) {.async.} =
   elif kind == mkError:
     let payloadStr = await client.socket.recv(payloadLen)
     var epos = 0
-    let emsg = readString(cast[seq[byte]](payloadStr), epos)
+    let emsg = readString(toBytes(payloadStr), epos)
     raise newException(IOError, "Auth failed: " & emsg)
   else:
     raise newException(IOError, "Unexpected auth response: 0x" & toHex(uint32(kind), 2))
@@ -427,14 +440,15 @@ proc ping*(client: BaraClient): Future[bool] {.async.} =
   if not client.connected:
     return false
   let msg = buildMessage(mkPing, client.nextId(), @[])
-  await client.socket.send(cast[string](msg))
+  let msgStr = toString(msg)
+  await client.socket.send(msgStr)
 
   let headerData = await client.socket.recv(12)
   if headerData.len < 12:
     return false
 
   var pos = 0
-  let hdrData = cast[seq[byte]](headerData)
+  let hdrData = toBytes(headerData)
   let kind = MsgKind(readUint32(hdrData, pos))
   return kind == mkPong
 

clients/nim/tests/test_integration.nim

@@ -1,15 +1,17 @@
 ## BaraDB Nim Client — Integration Tests
-## Requires a running BaraDB server on localhost:9472.
+## Requires a running BaraDB server.
+## Set BARADB_HOST / BARADB_PORT env vars to override defaults.
 
 import std/unittest
 import std/asyncdispatch
 import std/asyncnet
 import std/strutils
+import std/os
 import baradb/client
 
 const
-  TestHost = "127.0.0.1"
+  TestHost = getEnv("BARADB_HOST", "127.0.0.1")
-  TestPort = 9472
+  TestPort = parseInt(getEnv("BARADB_PORT", "9472"))
 
 proc serverAvailable(): bool =
   try:

clients/python/README.md

@@ -1,15 +1,16 @@
-# BaraDB Python Client
+# BaraDB Python Async Client
 
-Official Python client for **BaraDB** — a multimodal database engine written in Nim.
+Official async Python client for **BaraDB** — a multimodal database engine written in Nim.
 
 ## Features
 
+- **Async/await** — fully non-blocking, concurrent query support
 - **Binary wire protocol** — fast, compact TCP communication
-- **Sync & blocking API** — simple to use in scripts and apps
+- **Request queueing** — sequential processing with concurrent execution
 - **Query builder** — fluent SQL construction
 - **Parameterized queries** — safe from SQL injection
 - **Vector & JSON support** — first-class multimodal types
-- **Context managers** — `with` statement support
+- **Context managers** — async `async with` statement support
 
 ## Installation
 
@@ -20,7 +21,7 @@ pip install baradb
 Or from source:
 
 ```bash
-git clone https://github.com/barabadb/baradadb.git
+git clone https://codeberg.org/baraba/baradb
 cd clients/python
 pip install -e ".[dev]"
 ```
@@ -28,48 +29,62 @@ pip install -e ".[dev]"
 ## Quick Start
 
 ```python
+import asyncio
 from baradb import Client
 
-client = Client("localhost", 9472)
+async def main():
-client.connect()
+    client = Client("localhost", 9472)
+    await client.connect()
 
-result = client.query("SELECT name, age FROM users WHERE age > 18")
+    result = await client.query("SELECT name, age FROM users WHERE age > 18")
-for row in result:
+    for row in result:
         print(row["name"], row["age"])
 
-client.close()
+    await client.close()
+
+asyncio.run(main())
 ```
 
 ### Context Manager
 
 ```python
+import asyncio
 from baradb import Client
 
-with Client("localhost", 9472) as client:
+async def main():
-    result = client.query("SELECT 1")
+    async with Client("localhost", 9472) as client:
+        result = await client.query("SELECT 1")
         print(result.row_count)
+
+asyncio.run(main())
 ```
 
 ### Parameterized Queries
 
 ```python
+import asyncio
 from baradb import Client, WireValue
 
-with Client("localhost", 9472) as client:
+async def main():
-    result = client.query_params(
+    async with Client("localhost", 9472) as client:
+        result = await client.query_params(
             "SELECT * FROM users WHERE age > $1 AND country = $2",
             [WireValue.int64(18), WireValue.string("BG")],
         )
         for row in result:
             print(row)
+
+asyncio.run(main())
 ```
 
 ### Query Builder
 
 ```python
+import asyncio
 from baradb import Client, QueryBuilder
 
-with Client("localhost", 9472) as client:
+async def main():
+    async with Client("localhost", 9472) as client:
         qb = (
             QueryBuilder(client)
             .select("name", "email")
@@ -78,21 +93,28 @@ with Client("localhost", 9472) as client:
             .order_by("name")
             .limit(10)
         )
-    result = qb.exec()
+        result = await qb.exec()
         for row in result:
             print(row)
+
+asyncio.run(main())
 ```
 
 ### Vector Search
 
 ```python
+import asyncio
 from baradb import Client, WireValue
 
-with Client("localhost", 9472) as client:
+async def main():
-    result = client.query_params(
+    async with Client("localhost", 9472) as client:
+        result = await client.query_params(
             "SELECT id, name FROM products ORDER BY embedding <-> $1 LIMIT 5",
             [WireValue.vector([0.1, 0.2, 0.3])],
         )
+        print(result.rows)
+
+asyncio.run(main())
 ```
 
 ## Running Tests
@@ -107,7 +129,7 @@ Integration tests (requires server on `localhost:9472`):
 
 ```bash
 # Start server
-docker run -d -p 9472:9472 baradb:latest
+docker run -d -p 9472:9472 barabadb:latest
 
 # Run all tests
 pytest
@@ -124,17 +146,17 @@ pytest
 | `database` | `default`   | Default database           |
 | `username` | `admin`     | Username                   |
 | `password` | `""`        | Password                   |
-| `timeout`  | `30`        | Socket timeout in seconds  |
+| `timeout`  | `30.0`      | Socket timeout in seconds   |
 
-### Methods
+### Methods (all async)
 
-- `connect()` — open TCP connection
+- `await client.connect()` — open TCP connection
-- `close()` — close connection
+- `await client.close()` — close connection
-- `query(sql) -> QueryResult` — execute SELECT-like query
+- `await client.query(sql) -> QueryResult` — execute SELECT-like query
-- `query_params(sql, params) -> QueryResult` — parameterized query
+- `await client.query_params(sql, params) -> QueryResult` — parameterized query
-- `execute(sql) -> int` — execute DDL/DML, returns affected rows
+- `await client.execute(sql) -> int` — execute DDL/DML, returns affected rows
-- `auth(token)` — JWT authentication
+- `await client.auth(token)` — JWT authentication
-- `ping() -> bool` — health check
+- `await client.ping() -> bool` — health check
 
 ## License
 

clients/python/baradb/__init__.py

@@ -1,20 +1,34 @@
 """
-BaraDB Python Client
+BaraDB Python Async Client
 
-Official Python client for BaraDB — Multimodal Database Engine.
+Official async Python client for BaraDB — Multimodal Database Engine.
 Communicates via the BaraDB Wire Protocol (binary, big-endian, TCP).
 
 Install:
     pip install baradb
 
 Quick Start:
+    import asyncio
     from baradb import Client
+
+    async def main():
         client = Client("localhost", 9472)
-    client.connect()
+        await client.connect()
-    result = client.query("SELECT name FROM users WHERE age > 18")
+        result = await client.query("SELECT name FROM users WHERE age > 18")
         for row in result:
             print(row["name"])
-    client.close()
+        await client.close()
+
+    asyncio.run(main())
+
+Parameterized Queries:
+    result = await client.query_params(
+        "SELECT * FROM users WHERE age > $1",
+        [WireValue.int64(18)]
+    )
+
+Authentication:
+    await client.auth("jwt-token-here")
 """
 
 from .core import (
@@ -27,7 +41,7 @@ from .core import (
     ResultFormat,
 )
 
-__version__ = "1.0.0"
+__version__ = "1.1.2"
 __all__ = [
     "Client",
     "QueryBuilder",

clients/python/baradb/core.py

@@ -1,33 +1,38 @@
 """
-BaraDB Python Client
+BaraDB Python Async Client
 
-Binary protocol client for BaraDB database.
+Official async Python client for BaraDB — Multimodal Database Engine.
-Communicates via the BaraDB Wire Protocol (binary, big-endian).
+Communicates via the BaraDB Wire Protocol (binary, big-endian, TCP).
 
 Install:
     pip install baradb
 
 Quick Start:
+    import asyncio
     from baradb import Client
+
+    async def main():
         client = Client("localhost", 9472)
-    client.connect()
+        await client.connect()
-    result = client.query("SELECT name FROM users WHERE age > 18")
+        result = await client.query("SELECT name FROM users WHERE age > 18")
         for row in result:
             print(row["name"])
-    client.close()
+        await client.close()
+
+    asyncio.run(main())
 
 Parameterized Queries:
-    result = client.query_params("SELECT * FROM users WHERE age > $1", [WireValue.int64(18)])
+    result = await client.query_params(
+        "SELECT * FROM users WHERE age > $1",
+        [WireValue.int64(18)]
+    )
 
 Authentication:
-    client = Client("localhost", 9472, username="admin", password="secret")
+    await client.auth("jwt-token-here")
-    client.connect()
-    client.auth("jwt-token-here")
 """
 
-import socket
+import asyncio
 import struct
-import json
 from typing import Any, Optional, Sequence
 
 
@@ -49,7 +54,6 @@ class FieldKind:
 
 
 class MsgKind:
-    # Client messages
     CLIENT_HANDSHAKE = 0x01
     QUERY = 0x02
     QUERY_PARAMS = 0x03
@@ -59,7 +63,6 @@ class MsgKind:
     CLOSE = 0x07
     PING = 0x08
     AUTH = 0x09
-    # Server messages
     SERVER_HANDSHAKE = 0x80
     READY = 0x81
     DATA = 0x82
@@ -88,7 +91,7 @@ class WireValue:
         return WireValue(FieldKind.NULL)
 
     @staticmethod
-    def bool_val(val: bool):
+    def bool(val: bool):
         return WireValue(FieldKind.BOOL, val)
 
     @staticmethod
@@ -120,15 +123,15 @@ class WireValue:
         return WireValue(FieldKind.STRING, val)
 
     @staticmethod
-    def bytes_val(val: bytes):
+    def bytes(val: bytes):
         return WireValue(FieldKind.BYTES, val)
 
     @staticmethod
-    def array_val(val: list):
+    def array(val: list):
         return WireValue(FieldKind.ARRAY, val)
 
     @staticmethod
-    def object_val(val: dict):
+    def object(val: dict):
         return WireValue(FieldKind.OBJECT, val)
 
     @staticmethod
@@ -136,7 +139,7 @@ class WireValue:
         return WireValue(FieldKind.VECTOR, val)
 
     @staticmethod
-    def json_val(val: str):
+    def json(val: str):
         return WireValue(FieldKind.JSON, val)
 
     def serialize(self) -> bytes:
@@ -202,72 +205,92 @@ class QueryResult:
 
 
 class Client:
-    """BaraDB database client."""
+    """Async BaraDB database client."""
 
     def __init__(self, host: str = "localhost", port: int = 9472,
                  database: str = "default", username: str = "admin",
-                 password: str = "", timeout: int = 30):
+                 password: str = "", timeout: float = 30.0):
         self.host = host
         self.port = port
         self.database = database
         self.username = username
         self.password = password
         self.timeout = timeout
-        self._sock: Optional[socket.socket] = None
+        self._reader: Optional[asyncio.StreamReader] = None
+        self._writer: Optional[asyncio.StreamWriter] = None
         self._connected = False
         self._request_id = 0
+        self._buffer = bytearray()
+        self._pending_resolve = None
+        self._request_queue: list = []
+        self._request_lock = False
 
-    def connect(self) -> None:
+    async def connect(self) -> None:
         """Connect to the BaraDB server."""
-        self._sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self._reader, self._writer = await asyncio.wait_for(
-        self._sock.settimeout(self.timeout)
+            asyncio.open_connection(self.host, self.port),
-        self._sock.connect((self.host, self.port))
+            timeout=self.timeout
+        )
         self._connected = True
 
-    def close(self) -> None:
+    async def close(self) -> None:
-        if self._sock:
+        """Close the connection to the server."""
+        if self._writer and self._connected:
             try:
                 msg = self._build_message(MsgKind.CLOSE, b"")
-                self._sock.send(msg)
+                self._writer.write(msg)
+                await self._writer.drain()
             except Exception:
                 pass
-            self._sock.close()
+        if self._writer:
+            self._writer.close()
+            await self._writer.wait_closed()
+            self._writer = None
+        self._reader = None
         self._connected = False
 
     def is_connected(self) -> bool:
+        """Check if client is connected."""
         return self._connected
 
     def _next_id(self) -> int:
         self._request_id += 1
         return self._request_id
 
-    def _recv_exact(self, size: int) -> bytes:
+    async def _recv_exact(self, size: int) -> bytes:
         """Receive exactly `size` bytes from the socket."""
-        data = b""
+        while len(self._buffer) < size:
-        while len(data) < size:
+            try:
-            chunk = self._sock.recv(size - len(data))
+                chunk = await asyncio.wait_for(
+                    self._reader.read(size - len(self._buffer)),
+                    timeout=self.timeout
+                )
                 if not chunk:
                     raise ConnectionError("Connection closed by server")
-            data += chunk
+                self._buffer.extend(chunk)
+            except asyncio.TimeoutError:
+                raise TimeoutError("Receive timeout")
+        data = bytes(self._buffer[:size])
+        del self._buffer[:size]
         return data
 
-    def _read_response_header(self) -> tuple[int, int, int]:
+    async def _read_header(self) -> tuple[int, int, int]:
         """Read a 12-byte message header. Returns (kind, length, request_id)."""
-        header = self._recv_exact(12)
+        header = await self._recv_exact(12)
         kind, length, req_id = struct.unpack(">III", header)
         return kind, length, req_id
 
-    def _read_error(self, length: int) -> Exception:
+    async def _read_error(self, length: int) -> Exception:
         """Read and parse an ERROR payload."""
-        data = self._recv_exact(length)
+        data = await self._recv_exact(length)
         code = struct.unpack(">I", data[:4])[0]
         msg_len = struct.unpack(">I", data[4:8])[0]
         error_msg = data[8:8 + msg_len].decode("utf-8")
         return Exception(f"BaraDB error {code}: {error_msg}")
 
-    def _read_data_response(self, length: int) -> QueryResult:
+    async def _read_data_response(self, length: int) -> QueryResult:
         """Read and parse a DATA payload, then follow up with COMPLETE."""
-        data = self._recv_exact(length)
+        data = await self._recv_exact(length)
         pos = [0]
 
         col_count = struct.unpack(">I", data[pos[0]:pos[0]+4])[0]
@@ -299,68 +322,107 @@ class Client:
         result.rows = rows
         result.row_count = row_count
 
-        comp_kind, comp_len, _ = self._read_response_header()
+        comp_kind, comp_len, _ = await self._read_header()
         if comp_kind == MsgKind.COMPLETE:
-            comp_data = self._recv_exact(comp_len)
+            comp_data = await self._recv_exact(comp_len)
             result.affected_rows = struct.unpack(">I", comp_data[:4])[0]
         elif comp_kind == MsgKind.ERROR:
-            raise self._read_error(comp_len)
+            raise await self._read_error(comp_len)
 
         return result
 
-    def auth(self, token: str) -> None:
+    async def auth(self, token: str) -> None:
         """Authenticate with the server using a JWT token."""
+        if not self._connected:
+            raise Exception("Not connected")
         encoded = token.encode("utf-8")
         payload = struct.pack(">I", len(encoded)) + encoded
         msg = self._build_message(MsgKind.AUTH, payload)
-        self._sock.send(msg)
+        self._writer.write(msg)
+        await self._writer.drain()
 
-        kind, length, _ = self._read_response_header()
+        kind, length, _ = await self._read_header()
         if kind == MsgKind.AUTH_OK:
             return
         elif kind == MsgKind.ERROR:
-            raise self._read_error(length)
+            raise await self._read_error(length)
         else:
             raise Exception(f"Unexpected auth response: 0x{kind:02x}")
 
-    def ping(self) -> bool:
+    async def ping(self) -> bool:
         """Ping the server. Returns True if pong received."""
+        if not self._connected:
+            raise Exception("Not connected")
         msg = self._build_message(MsgKind.PING, b"")
-        self._sock.send(msg)
+        self._writer.write(msg)
+        await self._writer.drain()
 
-        kind, length, _ = self._read_response_header()
+        kind, length, _ = await self._read_header()
         if kind == MsgKind.PONG:
             return True
         elif kind == MsgKind.ERROR:
-            raise self._read_error(length)
+            raise await self._read_error(length)
         return False
 
-    def query(self, sql: str) -> QueryResult:
+    async def _process_queue(self) -> None:
+        """Process queued requests sequentially."""
+        if self._request_lock or len(self._request_queue) == 0:
+            return
+        self._request_lock = True
+        task_data = self._request_queue.pop(0)
+        try:
+            result = await task_data["task"]()
+            task_data["resolve"](result)
+        except Exception as err:
+            task_data["reject"](err)
+        finally:
+            self._request_lock = False
+            asyncio.create_task(self._process_queue())
+
+    def _enqueue(self, task) -> None:
+        """Add a task to the request queue."""
+        future = asyncio.Future()
+        self._request_queue.append({"task": task, "resolve": future.set_result, "reject": future.set_exception})
+        asyncio.create_task(self._process_queue())
+        return future
+
+    async def query(self, sql: str) -> QueryResult:
         """Execute a BaraQL query."""
+        if not self._connected:
+            raise Exception("Not connected")
+
+        async def _do_query():
             payload = self._encode_string(sql)
             payload += bytes([ResultFormat.BINARY])
 
             msg = self._build_message(MsgKind.QUERY, payload)
-        self._sock.send(msg)
+            self._writer.write(msg)
+            await self._writer.drain()
 
-        kind, length, _ = self._read_response_header()
+            kind, length, _ = await self._read_header()
 
             if kind == MsgKind.ERROR:
-            raise self._read_error(length)
+                raise await self._read_error(length)
 
             if kind == MsgKind.DATA:
-            return self._read_data_response(length)
+                return await self._read_data_response(length)
 
             if kind == MsgKind.COMPLETE:
-            data = self._recv_exact(length)
+                data = await self._recv_exact(length)
                 result = QueryResult()
                 result.affected_rows = struct.unpack(">I", data[:4])[0]
                 return result
 
             return QueryResult()
 
-    def query_params(self, sql: str, params: Sequence[WireValue]) -> QueryResult:
+        return await self._enqueue(_do_query)
+
+    async def query_params(self, sql: str, params: Sequence[WireValue]) -> QueryResult:
         """Execute a parameterized BaraQL query."""
+        if not self._connected:
+            raise Exception("Not connected")
+
+        async def _do_query_params():
             payload = self._encode_string(sql)
             payload += bytes([ResultFormat.BINARY])
             payload += struct.pack(">I", len(params))
@@ -368,26 +430,30 @@ class Client:
                 payload += p.serialize()
 
             msg = self._build_message(MsgKind.QUERY_PARAMS, payload)
-        self._sock.send(msg)
+            self._writer.write(msg)
+            await self._writer.drain()
 
-        kind, length, _ = self._read_response_header()
+            kind, length, _ = await self._read_header()
 
             if kind == MsgKind.ERROR:
-            raise self._read_error(length)
+                raise await self._read_error(length)
 
             if kind == MsgKind.DATA:
-            return self._read_data_response(length)
+                return await self._read_data_response(length)
 
             if kind == MsgKind.COMPLETE:
-            data = self._recv_exact(length)
+                data = await self._recv_exact(length)
                 result = QueryResult()
                 result.affected_rows = struct.unpack(">I", data[:4])[0]
                 return result
 
             return QueryResult()
 
-    def execute(self, sql: str) -> int:
+        return await self._enqueue(_do_query_params)
-        result = self.query(sql)
+
+    async def execute(self, sql: str) -> int:
+        """Execute a query and return affected rows count."""
+        result = await self.query(sql)
         return result.affected_rows
 
     def _build_message(self, kind: int, payload: bytes) -> bytes:
@@ -477,12 +543,12 @@ class Client:
             return self._read_string(data, pos)
         return None
 
-    def __enter__(self):
+    async def __aenter__(self):
-        self.connect()
+        await self.connect()
         return self
 
-    def __exit__(self, *args):
+    async def __aexit__(self, *args):
-        self.close()
+        await self.close()
 
 
 class QueryBuilder:
@@ -559,5 +625,5 @@ class QueryBuilder:
             sql += " OFFSET " + str(self._offset)
         return sql
 
-    def exec(self) -> QueryResult:
+    async def exec(self) -> QueryResult:
-        return self.client.query(self.build())
+        return await self.client.query(self.build())

clients/python/examples/basic.py

@@ -6,35 +6,36 @@ This script demonstrates common operations with the BaraDB Python client.
 Run it while a BaraDB server is listening on localhost:9472.
 """
 
+import asyncio
 import sys
 
 from baradb import Client, QueryBuilder, WireValue
 
 
-def example_connection():
+async def example_connection():
     print("=== Connection ===")
     client = Client("localhost", 9472)
-    client.connect()
+    await client.connect()
     print(f"Connected: {client.is_connected()}")
-    print(f"Ping: {client.ping()}")
+    print(f"Ping: {await client.ping()}")
-    client.close()
+    await client.close()
     print(f"Connected after close: {client.is_connected()}")
     print()
 
 
-def example_context_manager():
+async def example_context_manager():
     print("=== Context Manager ===")
-    with Client("localhost", 9472) as client:
+    async with Client("localhost", 9472) as client:
         print(f"Inside context: {client.is_connected()}")
-        print(f"Ping: {client.ping()}")
+        print(f"Ping: {await client.ping()}")
     print("Outside context: closed automatically")
     print()
 
 
-def example_simple_query():
+async def example_simple_query():
     print("=== Simple Query ===")
-    with Client("localhost", 9472) as client:
+    async with Client("localhost", 9472) as client:
-        result = client.query("SELECT 42 as answer, 'BaraDB' as db")
+        result = await client.query("SELECT 42 as answer, 'BaraDB' as db")
         print(f"Columns: {result.columns}")
         print(f"Rows: {result.rows}")
         print(f"Row count: {result.row_count}")
@@ -43,15 +44,15 @@ def example_simple_query():
     print()
 
 
-def example_parameterized_query():
+async def example_parameterized_query():
     print("=== Parameterized Query ===")
-    with Client("localhost", 9472) as client:
+    async with Client("localhost", 9472) as client:
-        result = client.query_params(
+        result = await client.query_params(
             "SELECT $1 as num, $2 as txt, $3 as flag",
             [
                 WireValue.int64(123),
                 WireValue.string("hello world"),
-                WireValue.bool_val(True),
+                WireValue.bool(True),
             ],
         )
         for row in result:
@@ -59,9 +60,9 @@ def example_parameterized_query():
     print()
 
 
-def example_query_builder():
+async def example_query_builder():
     print("=== Query Builder ===")
-    with Client("localhost", 9472) as client:
+    async with Client("localhost", 9472) as client:
         sql = (
             QueryBuilder(client)
             .select("id", "name")
@@ -75,10 +76,10 @@ def example_query_builder():
     print()
 
 
-def example_vector():
+async def example_vector():
     print("=== Vector Value ===")
-    with Client("localhost", 9472) as client:
+    async with Client("localhost", 9472) as client:
-        result = client.query_params(
+        result = await client.query_params(
             "SELECT $1 as embedding",
             [WireValue.vector([0.1, 0.2, 0.3, 0.4])],
         )
@@ -87,34 +88,34 @@ def example_vector():
     print()
 
 
-def example_ddl_dml():
+async def example_ddl_dml():
     print("=== DDL & DML ===")
-    with Client("localhost", 9472) as client:
+    async with Client("localhost", 9472) as client:
         # Clean up
         try:
-            client.execute("DROP TABLE IF EXISTS demo_products")
+            await client.execute("DROP TABLE IF EXISTS demo_products")
         except Exception as exc:
             print(f"Cleanup warning: {exc}")
 
-        client.execute(
+        await client.execute(
             "CREATE TABLE demo_products (id INT PRIMARY KEY, name STRING, price FLOAT)"
         )
-        affected = client.execute(
+        affected = await client.execute(
             "INSERT INTO demo_products (id, name, price) VALUES (1, 'Widget', 9.99)"
         )
         print(f"Insert affected rows: {affected}")
 
-        result = client.query("SELECT * FROM demo_products")
+        result = await client.query("SELECT * FROM demo_products")
         print(f"Select returned {result.row_count} row(s)")
         for row in result:
             print(f"  {row}")
 
-        client.execute("DROP TABLE demo_products")
+        await client.execute("DROP TABLE demo_products")
         print("Table dropped")
     print()
 
 
-def main():
+async def main():
     print("BaraDB Python Client Examples")
     print("Make sure BaraDB is running on localhost:9472")
     print()
@@ -131,10 +132,10 @@ def main():
 
     for fn in examples:
         try:
-            fn()
+            await fn()
         except Exception as exc:
             print(f"ERROR in {fn.__name__}: {exc}", file=sys.stderr)
 
 
 if __name__ == "__main__":
-    main()
+    asyncio.run(main())

clients/python/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "baradb"
-version = "1.1.0"
+version = "1.1.2"
 description = "Official Python client for BaraDB — Multimodal Database Engine"
 readme = "README.md"
 license = { text = "Apache-2.0" }
@@ -48,6 +48,7 @@ packages = ["baradb"]
 [tool.pytest.ini_options]
 testpaths = ["tests"]
 pythonpath = ["."]
+asyncio_mode = "auto"
 
 [tool.mypy]
 strict = true

clients/python/tests/test_integration.py

@@ -5,13 +5,16 @@ Requires a running BaraDB server on localhost:9472.
 These tests are skipped automatically if the server is unreachable.
 """
 
+import asyncio
+import os
 import socket
 import pytest
+import pytest_asyncio
 from baradb import Client, WireValue, QueryBuilder
 
 
-BARADB_HOST = "localhost"
+BARADB_HOST = os.environ.get("BARADB_HOST", "localhost")
-BARADB_PORT = 9472
+BARADB_PORT = int(os.environ.get("BARADB_PORT", "9472"))
 
 
 def _server_available() -> bool:
@@ -29,41 +32,41 @@ pytestmark = pytest.mark.skipif(
 )
 
 
-@pytest.fixture
+@pytest_asyncio.fixture
-def client():
+async def client():
     c = Client(BARADB_HOST, BARADB_PORT)
-    c.connect()
+    await c.connect()
     yield c
-    c.close()
+    await c.close()
 
 
 class TestConnection:
-    def test_connect_and_close(self):
+    async def test_connect_and_close(self):
         c = Client(BARADB_HOST, BARADB_PORT)
         assert not c.is_connected()
-        c.connect()
+        await c.connect()
         assert c.is_connected()
-        c.close()
+        await c.close()
         assert not c.is_connected()
 
-    def test_context_manager(self):
+    async def test_context_manager(self):
-        with Client(BARADB_HOST, BARADB_PORT) as c:
+        async with Client(BARADB_HOST, BARADB_PORT) as c:
             assert c.is_connected()
         assert not c.is_connected()
 
 
 class TestPing:
-    def test_ping(self, client):
+    async def test_ping(self, client):
-        assert client.ping() is True
+        assert await client.ping() is True
 
 
 class TestQuery:
-    def test_simple_select(self, client):
+    async def test_simple_select(self, client):
-        result = client.query("SELECT 1 as one")
+        result = await client.query("SELECT 1 as one")
         assert result.row_count >= 0  # server may return rows or empty
 
-    def test_query_with_params(self, client):
+    async def test_query_with_params(self, client):
-        result = client.query_params(
+        result = await client.query_params(
             "SELECT $1 as num, $2 as txt",
             [WireValue.int64(42), WireValue.string("hello")],
         )
@@ -71,22 +74,22 @@ class TestQuery:
 
 
 class TestExecute:
-    def test_create_table_and_insert(self, client):
+    async def test_create_table_and_insert(self, client):
         # Clean up first (best-effort)
         try:
-            client.execute("DROP TABLE IF EXISTS test_users")
+            await client.execute("DROP TABLE IF EXISTS test_users")
         except Exception:
             pass
 
-        client.execute(
+        await client.execute(
             "CREATE TABLE test_users (id INT PRIMARY KEY, name STRING, age INT)"
         )
-        affected = client.execute(
+        affected = await client.execute(
             "INSERT INTO test_users (id, name, age) VALUES (1, 'Alice', 30)"
         )
         assert affected >= 0
 
-        result = client.query("SELECT name, age FROM test_users WHERE id = 1")
+        result = await client.query("SELECT name, age FROM test_users WHERE id = 1")
         assert result.row_count == 1
         row = result.rows[0]
         # Server returns all columns; map by name via dict iteration
@@ -94,20 +97,20 @@ class TestExecute:
         assert row_dict["name"] == "Alice"
         assert row_dict["age"] == 30
 
-        client.execute("DROP TABLE test_users")
+        await client.execute("DROP TABLE test_users")
 
 
 class TestQueryBuilder:
-    def test_builder_exec(self, client):
+    async def test_builder_exec(self, client):
         try:
-            client.execute("DROP TABLE IF EXISTS test_products")
+            await client.execute("DROP TABLE IF EXISTS test_products")
         except Exception:
             pass
 
-        client.execute(
+        await client.execute(
             "CREATE TABLE test_products (id INT PRIMARY KEY, name STRING, price FLOAT)"
         )
-        client.execute(
+        await client.execute(
             "INSERT INTO test_products (id, name, price) VALUES (1, 'Widget', 9.99)"
         )
 
@@ -117,36 +120,36 @@ class TestQueryBuilder:
             .from_("test_products")
             .where("id = 1")
         )
-        result = qb.exec()
+        result = await qb.exec()
         assert result.row_count == 1
 
-        client.execute("DROP TABLE test_products")
+        await client.execute("DROP TABLE test_products")
 
 
 class TestAuth:
-    def test_auth_with_dummy_token(self, client):
+    async def test_auth_with_dummy_token(self, client):
         # Server uses default JWT secret in dev mode, any token format is accepted
         # depending on server config. We just verify the method does not crash.
         try:
-            client.auth("dummy-token-for-testing")
+            await client.auth("dummy-token-for-testing")
         except Exception as exc:
             # Auth may fail with invalid token — that's acceptable for this test
             assert "Auth" in str(exc) or "error" in str(exc).lower()
 
 
 class TestTransactions:
-    def test_transaction_begin_commit(self, client):
+    async def test_transaction_begin_commit(self, client):
         try:
-            client.execute("DROP TABLE IF EXISTS test_txn")
+            await client.execute("DROP TABLE IF EXISTS test_txn")
         except Exception:
             pass
-        client.execute("CREATE TABLE test_txn (id INT PRIMARY KEY)")
+        await client.execute("CREATE TABLE test_txn (id INT PRIMARY KEY)")
 
-        client.execute("BEGIN")
+        await client.execute("BEGIN")
-        client.execute("INSERT INTO test_txn (id) VALUES (1)")
+        await client.execute("INSERT INTO test_txn (id) VALUES (1)")
-        client.execute("COMMIT")
+        await client.execute("COMMIT")
 
-        result = client.query("SELECT COUNT(*) FROM test_txn")
+        result = await client.query("SELECT COUNT(*) FROM test_txn")
         assert result.row_count >= 0
 
-        client.execute("DROP TABLE test_txn")
+        await client.execute("DROP TABLE test_txn")

clients/python/tests/test_wire_protocol.py

@@ -18,11 +18,11 @@ class TestWireValue:
         assert data == b"\x00"
 
     def test_bool_true(self):
-        wv = WireValue.bool_val(True)
+        wv = WireValue.bool(True)
         assert wv.serialize() == b"\x01\x01"
 
     def test_bool_false(self):
-        wv = WireValue.bool_val(False)
+        wv = WireValue.bool(False)
         assert wv.serialize() == b"\x01\x00"
 
     def test_int8(self):
@@ -70,7 +70,7 @@ class TestWireValue:
         assert data[5:] == b"hello"
 
     def test_bytes(self):
-        wv = WireValue.bytes_val(b"\xde\xad\xbe\xef")
+        wv = WireValue.bytes(b"\xde\xad\xbe\xef")
         data = wv.serialize()
         assert data[0] == FieldKind.BYTES
         length = struct.unpack(">I", data[1:5])[0]
@@ -87,7 +87,7 @@ class TestWireValue:
         assert floats == [1.0, 2.0, 3.0]
 
     def test_json(self):
-        wv = WireValue.json_val('{"key": "value"}')
+        wv = WireValue.json('{"key": "value"}')
         data = wv.serialize()
         assert data[0] == FieldKind.JSON
         length = struct.unpack(">I", data[1:5])[0]
@@ -95,7 +95,7 @@ class TestWireValue:
 
     def test_array(self):
         inner = [WireValue.string("a"), WireValue.string("b")]
-        wv = WireValue.array_val(inner)
+        wv = WireValue.array(inner)
         data = wv.serialize()
         assert data[0] == FieldKind.ARRAY
         count = struct.unpack(">I", data[1:5])[0]
@@ -103,7 +103,7 @@ class TestWireValue:
 
     def test_object(self):
         inner = {"name": WireValue.string("Bara"), "age": WireValue.int32(42)}
-        wv = WireValue.object_val(inner)
+        wv = WireValue.object(inner)
         data = wv.serialize()
         assert data[0] == FieldKind.OBJECT
         count = struct.unpack(">I", data[1:5])[0]

clients/rust/Cargo.toml

@@ -1,11 +1,11 @@
 [package]
 name = "baradb"
-version = "1.1.0"
+version = "1.1.2"
 edition = "2021"
 authors = ["BaraDB Team <team@baradb.dev>"]
-description = "Official Rust client for BaraDB — binary protocol client"
+description = "Official async Rust client for BaraDB — binary protocol client"
 license = "Apache-2.0"
-repository = "https://github.com/barabadb/baradadb"
+repository = "https://github.com/barabadb/baradadb.git"
 documentation = "https://docs.baradb.dev"
 readme = "README.md"
 keywords = ["database", "baradb", "multimodal", "client", "wire-protocol"]
@@ -13,8 +13,10 @@ categories = ["database", "network-programming"]
 rust-version = "1.70"
 
 [dependencies]
+tokio = { version = "1.35", features = ["full"] }
 
 [dev-dependencies]
+tokio = { version = "1.35", features = ["full"] }
 
 [[example]]
 name = "basic"

clients/rust/README.md

@@ -1,13 +1,13 @@
-# BaraDB Rust Client
+# BaraDB Async Rust Client
 
-Official Rust client for **BaraDB** — a multimodal database engine written in Nim.
+Official async Rust client for **BaraDB** — a multimodal database engine written in Nim.
 
 ## Features
 
-- **Binary wire protocol** — fast TCP communication using only `std`
+- **Async/await** — fully non-blocking with Tokio runtime
-- **Zero dependencies** — no external crates required
+- **Binary wire protocol** — fast TCP communication
-- **Sync API** — blocking I/O suitable for most applications
 - **Query builder** — fluent SQL construction
+- **Parameterized queries** — safe from SQL injection
 - **Vector & JSON support** — first-class multimodal types
 
 ## Installation
@@ -16,13 +16,14 @@ Add to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-baradb = "1.0"
+baradb = "1.1"
+tokio = { version = "1.35", features = ["full"] }
 ```
 
 Or from source:
 
 ```bash
-git clone https://github.com/barabadb/baradadb.git
+git clone https://codeberg.org/baraba/baradb
 cd clients/rust
 cargo build
 ```
@@ -32,13 +33,14 @@ cargo build
 ```rust
 use baradb::Client;
 
-fn main() -> Result<(), Box<dyn std::error::Error>> {
+#[tokio::main]
-    let mut client = Client::connect("localhost", 9472)?;
+async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
-    let result = client.query("SELECT name, age FROM users WHERE age > 18")?;
+    let mut client = Client::connect("localhost", 9472).await?;
+    let result = client.query("SELECT name, age FROM users WHERE age > 18").await?;
     for row in result.rows() {
         println!("{:?}", row);
     }
-    client.close();
+    client.close().await;
     Ok(())
 }
 ```
@@ -48,16 +50,17 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 ```rust
 use baradb::{Client, WireValue};
 
-fn main() -> Result<(), Box<dyn std::error::Error>> {
+#[tokio::main]
-    let mut client = Client::connect("localhost", 9472)?;
+async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+    let mut client = Client::connect("localhost", 9472).await?;
     let result = client.query_params(
         "SELECT * FROM users WHERE age > $1 AND country = $2",
         &[WireValue::Int64(18), WireValue::String("BG".to_string())],
-    )?;
+    ).await?;
     for row in result.rows() {
         println!("{:?}", row);
     }
-    client.close();
+    client.close().await;
     Ok(())
 }
 ```
@@ -65,21 +68,23 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 ### Query Builder
 
 ```rust
-use baradb::Client;
+use baradb::{Client, QueryBuilder};
 
-fn main() -> Result<(), Box<dyn std::error::Error>> {
+#[tokio::main]
-    let mut client = Client::connect("localhost", 9472)?;
+async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
-    let result = baradb::QueryBuilder::new(&mut client)
+    let mut client = Client::connect("localhost", 9472).await?;
+    let result = QueryBuilder::new(&mut client)
         .select(&["name", "email"])
         .from("users")
         .where_clause("active = true")
         .order_by("name", "ASC")
         .limit(10)
-        .exec()?;
+        .exec()
+        .await?;
     for row in result.rows() {
         println!("{:?}", row);
     }
-    client.close();
+    client.close().await;
     Ok(())
 }
 ```
@@ -89,13 +94,14 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 ```rust
 use baradb::{Client, WireValue};
 
-fn main() -> Result<(), Box<dyn std::error::Error>> {
+#[tokio::main]
-    let mut client = Client::connect("localhost", 9472)?;
+async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+    let mut client = Client::connect("localhost", 9472).await?;
     let result = client.query_params(
         "SELECT id, name FROM products ORDER BY embedding <-> $1 LIMIT 5",
         &[WireValue::Vector(vec![0.1, 0.2, 0.3])],
-    )?;
+    ).await?;
-    client.close();
+    client.close().await;
     Ok(())
 }
 ```
@@ -112,7 +118,7 @@ Integration tests (requires server on `localhost:9472`):
 
 ```bash
 # Start server
-docker run -d -p 9472:9472 baradb:latest
+docker run -d -p 9472:9472 barabadb:latest
 
 # Run all tests
 cargo test
@@ -120,18 +126,18 @@ cargo test
 
 ## API Reference
 
-### `Client::connect(host, port)`
+### `Client::connect(host, port) -> Result<Client>`
 
-Creates a new client connected to the given host and port.
+Creates a new async client connected to the given host and port.
 
-### Methods
+### Methods (all async)
 
-- `query(sql) -> Result<QueryResult>` — execute SELECT-like query
+- `await client.query(sql) -> Result<QueryResult>` — execute SELECT-like query
-- `query_params(sql, params) -> Result<QueryResult>` — parameterized query
+- `await client.query_params(sql, params) -> Result<QueryResult>` — parameterized query
-- `execute(sql) -> Result<usize>` — execute DDL/DML, returns affected rows
+- `await client.execute(sql) -> Result<usize>` — execute DDL/DML, returns affected rows
-- `auth(token) -> Result<()>` — JWT authentication
+- `await client.auth(token) -> Result<()>` — JWT authentication
-- `ping() -> Result<bool>` — health check
+- `await client.ping() -> Result<bool>` — health check
-- `close()` — close connection
+- `await client.close()` — close connection
 
 ## License
 

clients/rust/examples/basic.rs

@@ -3,34 +3,65 @@
 
 use baradb::{Client, QueryBuilder, WireValue};
 
-fn example_connection() -> Result<(), Box<dyn std::error::Error>> {
+#[tokio::main]
+async fn main() {
+    println!("BaraDB Rust Client Examples");
+    println!("Make sure BaraDB is running on localhost:9472");
+    println!();
+
+    if let Err(e) = example_connection().await {
+        eprintln!("ERROR: {}", e);
+    }
+
+    if let Err(e) = example_simple_query().await {
+        eprintln!("ERROR: {}", e);
+    }
+
+    if let Err(e) = example_parameterized_query().await {
+        eprintln!("ERROR: {}", e);
+    }
+
+    if let Err(e) = example_query_builder().await {
+        eprintln!("ERROR: {}", e);
+    }
+
+    if let Err(e) = example_vector().await {
+        eprintln!("ERROR: {}", e);
+    }
+
+    if let Err(e) = example_ddl_dml().await {
+        eprintln!("ERROR: {}", e);
+    }
+}
+
+async fn example_connection() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     println!("=== Connection ===");
-    let mut client = Client::connect("127.0.0.1", 9472)?;
+    let mut client = Client::connect("127.0.0.1", 9472).await?;
     println!("Connected: {}", client.is_connected());
-    println!("Ping: {}", client.ping()?);
+    println!("Ping: {}", client.ping().await?);
-    client.close();
+    client.close().await;
     println!("Connected after close: {}", client.is_connected());
     println!();
     Ok(())
 }
 
-fn example_simple_query() -> Result<(), Box<dyn std::error::Error>> {
+async fn example_simple_query() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     println!("=== Simple Query ===");
-    let mut client = Client::connect("127.0.0.1", 9472)?;
+    let mut client = Client::connect("127.0.0.1", 9472).await?;
-    let result = client.query("SELECT 42 as answer, 'BaraDB' as db")?;
+    let result = client.query("SELECT 42 as answer, 'BaraDB' as db").await?;
     println!("Columns: {:?}", result.columns());
     println!("Row count: {}", result.row_count());
     for row in result.rows() {
         println!("  {:?}", row);
     }
-    client.close();
+    client.close().await;
     println!();
     Ok(())
 }
 
-fn example_parameterized_query() -> Result<(), Box<dyn std::error::Error>> {
+async fn example_parameterized_query() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     println!("=== Parameterized Query ===");
-    let mut client = Client::connect("127.0.0.1", 9472)?;
+    let mut client = Client::connect("127.0.0.1", 9472).await?;
     let result = client.query_params(
         "SELECT $1 as num, $2 as txt, $3 as flag",
         &[
@@ -38,18 +69,18 @@ fn example_parameterized_query() -> Result<(), Box<dyn std::error::Error>> {
             WireValue::String("hello world".to_string()),
             WireValue::Bool(true),
         ],
-    )?;
+    ).await?;
     for row in result.rows() {
         println!("  {:?}", row);
     }
-    client.close();
+    client.close().await;
     println!();
     Ok(())
 }
 
-fn example_query_builder() -> Result<(), Box<dyn std::error::Error>> {
+async fn example_query_builder() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     println!("=== Query Builder ===");
-    let mut client = Client::connect("127.0.0.1", 9472)?;
+    let mut client = Client::connect("127.0.0.1", 9472).await?;
     let sql = QueryBuilder::new(&mut client)
         .select(&["id", "name"])
         .from("users")
@@ -58,70 +89,49 @@ fn example_query_builder() -> Result<(), Box<dyn std::error::Error>> {
         .limit(5)
         .build();
     println!("Generated SQL: {}", sql);
-    client.close();
+    client.close().await;
     println!();
     Ok(())
 }
 
-fn example_vector() -> Result<(), Box<dyn std::error::Error>> {
+async fn example_vector() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     println!("=== Vector Value ===");
-    let mut client = Client::connect("127.0.0.1", 9472)?;
+    let mut client = Client::connect("127.0.0.1", 9472).await?;
     let result = client.query_params(
         "SELECT $1 as embedding",
         &[WireValue::Vector(vec![0.1, 0.2, 0.3, 0.4])],
-    )?;
+    ).await?;
     for row in result.rows() {
         println!("  {:?}", row);
     }
-    client.close();
+    client.close().await;
     println!();
     Ok(())
 }
 
-fn example_ddl_dml() -> Result<(), Box<dyn std::error::Error>> {
+async fn example_ddl_dml() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     println!("=== DDL & DML ===");
-    let mut client = Client::connect("127.0.0.1", 9472)?;
+    let mut client = Client::connect("127.0.0.1", 9472).await?;
 
-    let _ = client.execute("DROP TABLE IF EXISTS demo_products");
+    let _ = client.execute("DROP TABLE IF EXISTS demo_products").await;
 
     client.execute(
         "CREATE TABLE demo_products (id INT PRIMARY KEY, name STRING, price FLOAT)",
-    )?;
+    ).await?;
     let affected = client.execute(
         "INSERT INTO demo_products (id, name, price) VALUES (1, 'Widget', 9.99)",
-    )?;
+    ).await?;
     println!("Insert affected rows: {}", affected);
 
-    let result = client.query("SELECT * FROM demo_products")?;
+    let result = client.query("SELECT * FROM demo_products").await?;
     println!("Select returned {} row(s)", result.row_count());
     for row in result.rows() {
         println!("  {:?}", row);
     }
 
-    client.execute("DROP TABLE demo_products")?;
+    client.execute("DROP TABLE demo_products").await?;
     println!("Table dropped");
-    client.close();
+    client.close().await;
     println!();
     Ok(())
 }
-
-fn main() {
-    println!("BaraDB Rust Client Examples");
-    println!("Make sure BaraDB is running on localhost:9472");
-    println!();
-
-    let examples: Vec<fn() -> Result<(), Box<dyn std::error::Error>>> = vec![
-        example_connection,
-        example_simple_query,
-        example_parameterized_query,
-        example_query_builder,
-        example_vector,
-        example_ddl_dml,
-    ];
-
-    for example in examples {
-        if let Err(e) = example() {
-            eprintln!("ERROR: {}", e);
-        }
-    }
-}

clients/rust/examples/ping_test.rs

@@ -1,11 +1,12 @@
 use baradb::Client;
 
-fn main() {
+#[tokio::main]
-    let mut client = Client::connect("localhost", 9472).unwrap();
+async fn main() {
+    let mut client = Client::connect("localhost", 9472).await.unwrap();
     println!("Connected: {}", client.is_connected());
-    match client.ping() {
+    match client.ping().await {
         Ok(v) => println!("Ping: {}", v),
         Err(e) => println!("Ping error: {}", e),
     }
-    client.close();
+    client.close().await;
 }

clients/rust/src/lib.rs

@@ -1,36 +1,42 @@
-//! BaraDB Rust Client
+//! BaraDB Async Rust Client
 //!
-//! Binary protocol client for BaraDB database.
+//! Async binary protocol client for BaraDB database.
-//! Zero external dependencies — uses only `std`.
+//! Uses Tokio for async I/O operations.
 //!
 //! # Example
 //! ```no_run
 //! use baradb::{Client, WireValue};
 //!
-//! let mut client = Client::connect("localhost", 9472).unwrap();
+//! #[tokio::main]
-//! let result = client.query("SELECT name FROM users WHERE age > 18").unwrap();
+//! async fn main() {
+//!     let mut client = Client::connect("localhost", 9472).await.unwrap();
+//!     let result = client.query("SELECT name FROM users WHERE age > 18").await.unwrap();
 //!     for row in result.rows() {
 //!         if let Some(WireValue::String(name)) = row.get("name") {
 //!             println!("{}", name);
 //!         }
 //!     }
-//! client.close();
+//!     client.close().await;
+//! }
 //! ```
 //!
 //! # Parameterized Queries
 //! ```no_run
 //! use baradb::{Client, WireValue};
 //!
-//! let mut client = Client::connect("localhost", 9472).unwrap();
+//! #[tokio::main]
+//! async fn main() {
+//!     let mut client = Client::connect("localhost", 9472).await.unwrap();
 //!     let result = client.query_params(
 //!         "SELECT * FROM users WHERE age > $1",
 //!         &[WireValue::Int64(18)],
-//! ).unwrap();
+//!     ).await.unwrap();
+//! }
 //! ```
 
 use std::collections::HashMap;
-use std::io::{Read, Write};
+use tokio::io::{AsyncReadExt, AsyncWriteExt};
-use std::net::TcpStream;
+use tokio::net::TcpStream;
 
 // Client message kinds
 const MK_CLIENT_HANDSHAKE: u32 = 0x01;
@@ -221,43 +227,41 @@ impl QueryResult {
     }
 }
 
-/// BaraDB client
+/// BaraDB async client
 pub struct Client {
-    config: Config,
     stream: TcpStream,
     connected: bool,
     request_id: u32,
+    read_buf: Vec<u8>,
 }
 
 impl Client {
-    pub fn connect(host: &str, port: u16) -> Result<Self, Box<dyn std::error::Error>> {
+    /// Connect to a BaraDB server
-        let config = Config {
+    pub async fn connect(host: &str, port: u16) -> Result<Self, Box<dyn std::error::Error + Send + Sync>> {
-            host: host.to_string(),
+        let addr = format!("{}:{}", host, port);
-            port,
+        let stream = TcpStream::connect(&addr).await?;
-            ..Default::default()
-        };
-        Self::connect_with_config(config)
-    }
-
-    pub fn connect_with_config(config: Config) -> Result<Self, Box<dyn std::error::Error>> {
-        let addr = format!("{}:{}", config.host, config.port);
-        let stream = TcpStream::connect(&addr)?;
-        stream.set_nodelay(true)?;
         Ok(Client {
-            config,
             stream,
             connected: true,
             request_id: 0,
+            read_buf: Vec::new(),
         })
     }
 
-    pub fn close(&mut self) {
+    /// Connect with custom configuration
+    pub async fn connect_with_config(config: Config) -> Result<Self, Box<dyn std::error::Error + Send + Sync>> {
+        Self::connect(&config.host, config.port).await
+    }
+
+    /// Close the connection
+    pub async fn close(&mut self) {
         if self.connected {
-            let _ = self.send_close();
+            let _ = self.send_close().await;
         }
         self.connected = false;
     }
 
+    /// Check if connected
     pub fn is_connected(&self) -> bool {
         self.connected
     }
@@ -267,27 +271,39 @@ impl Client {
         self.request_id
     }
 
-    fn send_close(&mut self) -> Result<(), Box<dyn std::error::Error>> {
+    async fn send_close(&mut self) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
         let msg = build_message(MK_CLOSE, self.next_id(), &[]);
-        self.stream.write_all(&msg)?;
+        self.stream.write_all(&msg).await?;
         Ok(())
     }
 
-    fn read_header(&mut self) -> Result<(u32, u32, u32), Box<dyn std::error::Error>> {
+    async fn read_exact(&mut self, mut n: usize) -> Result<Vec<u8>, Box<dyn std::error::Error + Send + Sync>> {
-        let mut header = [0u8; 12];
+        let mut buf = vec![0u8; n];
-        self.stream.read_exact(&mut header)?;
+        let mut pos = 0;
+        while pos < n {
+            let read = self.stream.read(&mut buf[pos..]).await?;
+            if read == 0 {
+                return Err("Connection closed".into());
+            }
+            pos += read;
+        }
+        Ok(buf)
+    }
+
+    async fn read_header(&mut self) -> Result<(u32, u32, u32), Box<dyn std::error::Error + Send + Sync>> {
+        let header = self.read_exact(12).await?;
         let kind = u32::from_be_bytes([header[0], header[1], header[2], header[3]]);
         let length = u32::from_be_bytes([header[4], header[5], header[6], header[7]]);
         let req_id = u32::from_be_bytes([header[8], header[9], header[10], header[11]]);
         Ok((kind, length, req_id))
     }
 
-    fn read_payload(&mut self, length: u32) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
+    async fn read_payload(&mut self, length: u32) -> Result<Vec<u8>, Box<dyn std::error::Error + Send + Sync>> {
-        let mut payload = vec![0u8; length as usize];
         if length > 0 {
-            self.stream.read_exact(&mut payload)?;
+            self.read_exact(length as usize).await
+        } else {
+            Ok(vec![])
         }
-        Ok(payload)
     }
 
     fn read_error_message(payload: &[u8]) -> String {
@@ -302,26 +318,26 @@ impl Client {
         "Query error".to_string()
     }
 
-    fn read_data_response(&mut self, payload: &[u8]) -> Result<QueryResult, Box<dyn std::error::Error>> {
+    async fn read_data_response(&mut self, payload: &[u8]) -> Result<QueryResult, Box<dyn std::error::Error + Send + Sync>> {
         let mut pos = 0usize;
-        let col_count = read_u32(payload, &mut pos) as usize;
+        let col_count = read_u32(payload, &mut pos);
 
-        let mut columns = Vec::with_capacity(col_count);
+        let mut columns = Vec::with_capacity(col_count as usize);
         for _ in 0..col_count {
             columns.push(read_string(payload, &mut pos));
         }
 
-        let mut col_types = Vec::with_capacity(col_count);
+        let mut col_types = Vec::with_capacity(col_count as usize);
         for _ in 0..col_count {
             col_types.push(payload[pos]);
             pos += 1;
         }
 
-        let row_count = read_u32(payload, &mut pos) as usize;
+        let row_count = read_u32(payload, &mut pos);
-        let mut rows = Vec::with_capacity(row_count);
+        let mut rows = Vec::with_capacity(row_count as usize);
         for _ in 0..row_count {
             let mut row = HashMap::new();
-            for c in 0..col_count {
+            for c in 0..col_count as usize {
                 let val = read_wire_value(payload, &mut pos);
                 row.insert(columns[c].clone(), val);
             }
@@ -329,9 +345,9 @@ impl Client {
         }
 
         let mut affected = 0usize;
-        let (comp_kind, comp_len, _) = self.read_header()?;
+        let (comp_kind, comp_len, _) = self.read_header().await?;
         if comp_kind == MK_COMPLETE {
-            let comp_payload = self.read_payload(comp_len)?;
+            let comp_payload = self.read_payload(comp_len).await?;
             if comp_payload.len() >= 4 {
                 affected = u32::from_be_bytes([comp_payload[0], comp_payload[1], comp_payload[2], comp_payload[3]]) as usize;
             }
@@ -340,44 +356,47 @@ impl Client {
         Ok(QueryResult { columns, column_types: col_types, rows, affected_rows: affected })
     }
 
-    pub fn auth(&mut self, token: &str) -> Result<(), Box<dyn std::error::Error>> {
+    /// Authenticate with JWT token
+    pub async fn auth(&mut self, token: &str) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
         if !self.connected {
             return Err("Not connected".into());
         }
         let payload = encode_string(token);
         let msg = build_message(MK_AUTH, self.next_id(), &payload);
-        self.stream.write_all(&msg)?;
+        self.stream.write_all(&msg).await?;
 
-        let (kind, length, _) = self.read_header()?;
+        let (kind, length, _) = self.read_header().await?;
         match kind {
             MK_AUTH_OK => Ok(()),
             MK_ERROR => {
-                let p = self.read_payload(length)?;
+                let p = self.read_payload(length).await?;
                 Err(Self::read_error_message(&p).into())
             }
             _ => Err(format!("Unexpected auth response: 0x{:02x}", kind).into()),
         }
     }
 
-    pub fn ping(&mut self) -> Result<bool, Box<dyn std::error::Error>> {
+    /// Ping the server
+    pub async fn ping(&mut self) -> Result<bool, Box<dyn std::error::Error + Send + Sync>> {
         if !self.connected {
             return Err("Not connected".into());
         }
         let msg = build_message(MK_PING, self.next_id(), &[]);
-        self.stream.write_all(&msg)?;
+        self.stream.write_all(&msg).await?;
 
-        let (kind, length, _) = self.read_header()?;
+        let (kind, length, _) = self.read_header().await?;
         match kind {
             MK_PONG => Ok(true),
             MK_ERROR => {
-                let p = self.read_payload(length)?;
+                let p = self.read_payload(length).await?;
                 Err(Self::read_error_message(&p).into())
             }
             _ => Ok(false),
         }
     }
 
-    pub fn query(&mut self, sql: &str) -> Result<QueryResult, Box<dyn std::error::Error>> {
+    /// Execute a query
+    pub async fn query(&mut self, sql: &str) -> Result<QueryResult, Box<dyn std::error::Error + Send + Sync>> {
         if !self.connected {
             return Err("Not connected".into());
         }
@@ -386,14 +405,14 @@ impl Client {
         payload.push(0x00); // ResultFormat::BINARY
 
         let msg = build_message(MK_QUERY, self.next_id(), &payload);
-        self.stream.write_all(&msg)?;
+        self.stream.write_all(&msg).await?;
 
-        let (kind, length, _) = self.read_header()?;
+        let (kind, length, _) = self.read_header().await?;
-        let resp_payload = self.read_payload(length)?;
+        let resp_payload = self.read_payload(length).await?;
 
         match kind {
             MK_READY => Ok(QueryResult { columns: vec![], column_types: vec![], rows: vec![], affected_rows: 0 }),
-            MK_DATA => self.read_data_response(&resp_payload),
+            MK_DATA => self.read_data_response(&resp_payload).await,
             MK_COMPLETE => {
                 let affected = if resp_payload.len() >= 4 {
                     u32::from_be_bytes([resp_payload[0], resp_payload[1], resp_payload[2], resp_payload[3]]) as usize
@@ -405,7 +424,8 @@ impl Client {
         }
     }
 
-    pub fn query_params(&mut self, sql: &str, params: &[WireValue]) -> Result<QueryResult, Box<dyn std::error::Error>> {
+    /// Execute a parameterized query
+    pub async fn query_params(&mut self, sql: &str, params: &[WireValue]) -> Result<QueryResult, Box<dyn std::error::Error + Send + Sync>> {
         if !self.connected {
             return Err("Not connected".into());
         }
@@ -418,14 +438,14 @@ impl Client {
         }
 
         let msg = build_message(MK_QUERY_PARAMS, self.next_id(), &payload);
-        self.stream.write_all(&msg)?;
+        self.stream.write_all(&msg).await?;
 
-        let (kind, length, _) = self.read_header()?;
+        let (kind, length, _) = self.read_header().await?;
-        let resp_payload = self.read_payload(length)?;
+        let resp_payload = self.read_payload(length).await?;
 
         match kind {
             MK_READY => Ok(QueryResult { columns: vec![], column_types: vec![], rows: vec![], affected_rows: 0 }),
-            MK_DATA => self.read_data_response(&resp_payload),
+            MK_DATA => self.read_data_response(&resp_payload).await,
             MK_COMPLETE => {
                 let affected = if resp_payload.len() >= 4 {
                     u32::from_be_bytes([resp_payload[0], resp_payload[1], resp_payload[2], resp_payload[3]]) as usize
@@ -437,12 +457,14 @@ impl Client {
         }
     }
 
-    pub fn execute(&mut self, sql: &str) -> Result<usize, Box<dyn std::error::Error>> {
+    /// Execute and return affected rows
-        let result = self.query(sql)?;
+    pub async fn execute(&mut self, sql: &str) -> Result<usize, Box<dyn std::error::Error + Send + Sync>> {
+        let result = self.query(sql).await?;
         Ok(result.affected_rows())
     }
 }
 
+/// Query builder for fluent SQL construction
 pub struct QueryBuilder<'a> {
     client: &'a mut Client,
     select_cols: Vec<String>,
@@ -457,6 +479,7 @@ pub struct QueryBuilder<'a> {
 }
 
 impl<'a> QueryBuilder<'a> {
+    /// Create a new query builder
     pub fn new(client: &'a mut Client) -> Self {
         QueryBuilder {
             client,
@@ -472,56 +495,67 @@ impl<'a> QueryBuilder<'a> {
         }
     }
 
+    /// Add columns to SELECT
     pub fn select(mut self, cols: &[&str]) -> Self {
         self.select_cols.extend(cols.iter().map(|s| s.to_string()));
         self
     }
 
+    /// Set the FROM table
     pub fn from(mut self, table: &str) -> Self {
         self.from_table = table.to_string();
         self
     }
 
+    /// Add a WHERE clause
     pub fn where_clause(mut self, clause: &str) -> Self {
         self.where_clauses.push(clause.to_string());
         self
     }
 
+    /// Add a JOIN clause
     pub fn join(mut self, table: &str, on: &str) -> Self {
         self.joins.push(format!("JOIN {} ON {}", table, on));
         self
     }
 
+    /// Add a LEFT JOIN clause
     pub fn left_join(mut self, table: &str, on: &str) -> Self {
         self.joins.push(format!("LEFT JOIN {} ON {}", table, on));
         self
     }
 
+    /// Add GROUP BY columns
     pub fn group_by(mut self, cols: &[&str]) -> Self {
         self.group_by.extend(cols.iter().map(|s| s.to_string()));
         self
     }
 
+    /// Add HAVING clause
     pub fn having(mut self, clause: &str) -> Self {
         self.having = clause.to_string();
         self
     }
 
+    /// Add ORDER BY column
     pub fn order_by(mut self, col: &str, dir: &str) -> Self {
         self.order_by.push(format!("{} {}", col, dir));
         self
     }
 
+    /// Set LIMIT
     pub fn limit(mut self, n: usize) -> Self {
         self.limit = n;
         self
     }
 
+    /// Set OFFSET
     pub fn offset(mut self, n: usize) -> Self {
         self.offset = n;
         self
     }
 
+    /// Build the SQL string
     pub fn build(&self) -> String {
         let mut sql = String::from("SELECT ");
         if self.select_cols.is_empty() {
@@ -555,9 +589,10 @@ impl<'a> QueryBuilder<'a> {
         sql
     }
 
-    pub fn exec(self) -> Result<QueryResult, Box<dyn std::error::Error>> {
+    /// Execute the query
+    pub async fn exec(self) -> Result<QueryResult, Box<dyn std::error::Error + Send + Sync>> {
         let sql = self.build();
-        self.client.query(&sql)
+        self.client.query(&sql).await
     }
 }
 

clients/rust/tests/integration_tests.rs

@@ -1,104 +1,118 @@
 // BaraDB Rust Client — Integration Tests
-// Requires a running BaraDB server on localhost:9472.
+// Requires a running BaraDB server.
+// Set BARADB_HOST / BARADB_PORT env vars to override defaults.
 
 use std::net::TcpStream;
-use std::time::Duration;
 
 use baradb::{Client, QueryBuilder, WireValue};
 
-const HOST: &str = "127.0.0.1";
+fn host() -> String {
-const PORT: u16 = 9472;
+    std::env::var("BARADB_HOST").unwrap_or_else(|_| "127.0.0.1".to_string())
-
-fn server_available() -> bool {
-    TcpStream::connect((HOST, PORT)).is_ok()
 }
 
-#[test]
+fn port() -> u16 {
-fn test_connect_and_close() {
+    std::env::var("BARADB_PORT")
+        .ok()
+        .and_then(|s| s.parse().ok())
+        .unwrap_or(9472)
+}
+
+fn server_available() -> bool {
+    TcpStream::connect((host().as_str(), port())).is_ok()
+}
+
+#[tokio::test]
+async fn test_connect_and_close() {
     if !server_available() {
         return;
     }
-    let mut client = Client::connect(HOST, PORT).unwrap();
+    let mut client = Client::connect(&host(), port()).await.unwrap();
     assert!(client.is_connected());
-    client.close();
+    client.close().await;
     assert!(!client.is_connected());
 }
 
-#[test]
+#[tokio::test]
-fn test_ping() {
+async fn test_ping() {
     if !server_available() {
         return;
     }
-    let mut client = Client::connect(HOST, PORT).unwrap();
+    let mut client = Client::connect(&host(), port()).await.unwrap();
-    assert!(client.ping().unwrap());
+    assert!(client.ping().await.unwrap());
-    client.close();
+    client.close().await;
 }
 
-#[test]
+#[tokio::test]
-fn test_simple_select() {
+async fn test_simple_select() {
     if !server_available() {
         return;
     }
-    let mut client = Client::connect(HOST, PORT).unwrap();
+    let mut client = Client::connect(&host(), port()).await.unwrap();
-    let result = client.query("SELECT 1 as one").unwrap();
+    let result = client.query("SELECT 1 as one").await.unwrap();
     assert!(result.row_count() >= 0);
-    client.close();
+    client.close().await;
 }
 
-#[test]
+#[tokio::test]
-fn test_parameterized_query() {
+async fn test_parameterized_query() {
     if !server_available() {
         return;
     }
-    let mut client = Client::connect(HOST, PORT).unwrap();
+    let mut client = Client::connect(&host(), port()).await.unwrap();
     let result = client
         .query_params(
             "SELECT $1 as num, $2 as txt",
             &[WireValue::Int64(42), WireValue::String("hello".to_string())],
         )
+        .await
         .unwrap();
     assert!(result.row_count() >= 0);
-    client.close();
+    client.close().await;
 }
 
-#[test]
+#[tokio::test]
-fn test_create_table_insert_select_drop() {
+async fn test_create_table_insert_select_drop() {
     if !server_available() {
         return;
     }
-    let mut client = Client::connect(HOST, PORT).unwrap();
+    let mut client = Client::connect(&host(), port()).await.unwrap();
 
-    let _ = client.execute("DROP TABLE IF EXISTS rust_test_users");
+    let _ = client.execute("DROP TABLE IF EXISTS rust_test_users").await;
     client
         .execute("CREATE TABLE rust_test_users (id INT PRIMARY KEY, name STRING, age INT)")
+        .await
         .unwrap();
     let affected = client
         .execute("INSERT INTO rust_test_users (id, name, age) VALUES (1, 'Alice', 30)")
+        .await
         .unwrap();
     assert!(affected >= 0);
 
     let result = client
         .query("SELECT name, age FROM rust_test_users WHERE id = 1")
+        .await
         .unwrap();
     assert_eq!(result.row_count(), 1);
 
-    client.execute("DROP TABLE rust_test_users").unwrap();
+    client.execute("DROP TABLE rust_test_users").await.unwrap();
-    client.close();
+    client.close().await;
 }
 
-#[test]
+#[tokio::test]
-fn test_query_builder_exec() {
+async fn test_query_builder_exec() {
     if !server_available() {
         return;
     }
-    let mut client = Client::connect(HOST, PORT).unwrap();
+    let mut client = Client::connect(&host(), port()).await.unwrap();
 
-    let _ = client.execute("DROP TABLE IF EXISTS rust_test_products");
+    let _ = client.execute("DROP TABLE IF EXISTS rust_test_products").await;
     client
         .execute("CREATE TABLE rust_test_products (id INT PRIMARY KEY, name STRING, price FLOAT)")
+        .await
         .unwrap();
     client
         .execute("INSERT INTO rust_test_products (id, name, price) VALUES (1, 'Widget', 9.99)")
+        .await
         .unwrap();
 
     let result = QueryBuilder::new(&mut client)
@@ -106,21 +120,22 @@ fn test_query_builder_exec() {
         .from("rust_test_products")
         .where_clause("id = 1")
         .exec()
+        .await
         .unwrap();
 
     assert_eq!(result.row_count(), 1);
 
-    client.execute("DROP TABLE rust_test_products").unwrap();
+    client.execute("DROP TABLE rust_test_products").await.unwrap();
-    client.close();
+    client.close().await;
 }
 
-#[test]
+#[tokio::test]
-fn test_auth_dummy_token() {
+async fn test_auth_dummy_token() {
     if !server_available() {
         return;
     }
-    let mut client = Client::connect(HOST, PORT).unwrap();
+    let mut client = Client::connect(&host(), port()).await.unwrap();
-    let res = client.auth("dummy-token-for-testing");
+    let res = client.auth("dummy-token-for-testing").await;
     // Dev server may accept or reject — both are fine
     match res {
         Ok(()) => {}
@@ -129,5 +144,5 @@ fn test_auth_dummy_token() {
             assert!(msg.contains("Auth") || msg.to_lowercase().contains("error"));
         }
     }
-    client.close();
+    client.close().await;
 }

docker-compose.ormin.yml

@@ -0,0 +1,51 @@
+# BaraDB + Ormin Development Stack
+#
+# Usage:
+#   docker compose -f docker-compose.ormin.yml up --build -d
+#   docker compose -f docker-compose.ormin.yml exec ormin-dev bash
+#
+# Inside the container:
+#   nim c -r examples/baradb_basic.nim
+
+services:
+  baradb:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: baradb:latest
+    container_name: baradb-ormin
+    hostname: baradb
+    ports:
+      - "9472:9472"
+    healthcheck:
+      test: ["CMD", "sh", "-c", "wget -qO- http://localhost:9912/health >/dev/null 2>&1"]
+      interval: 5s
+      timeout: 3s
+      retries: 5
+      start_period: 10s
+    networks:
+      - ormin_net
+
+  ormin-dev:
+    build:
+      context: .
+      dockerfile: clients/nim/ormin/docker/Dockerfile
+    container_name: ormin-dev
+    depends_on:
+      baradb:
+        condition: service_healthy
+    environment:
+      - BARADB_HOST=baradb
+      - BARADB_PORT=9472
+    volumes:
+      - ./clients/nim/ormin:/workspace/ormin
+      - ./clients/nim/src:/workspace/baradb/src
+      - ./clients/nim/baradb.nimble:/workspace/baradb/baradb.nimble
+    working_dir: /workspace/ormin
+    command: tail -f /dev/null
+    networks:
+      - ormin_net
+
+networks:
+  ormin_net:
+    driver: bridge

docker-compose.test.yml

@@ -0,0 +1,118 @@
+# BaraDB — Client Integration Test Stack
+#
+# This compose file starts BaraDB server and runs all client test suites.
+# Because test containers run in parallel, do NOT use --abort-on-container-exit
+# (the first finished container would kill the others).
+#
+# Recommended usage:
+#   ./scripts/test-clients.sh
+#
+# Or manually run each suite:
+#   docker compose -f docker-compose.test.yml up -d baradb
+#   docker compose -f docker-compose.test.yml run --rm test-python
+#   docker compose -f docker-compose.test.yml run --rm test-javascript
+#   docker compose -f docker-compose.test.yml run --rm test-nim
+#   docker compose -f docker-compose.test.yml run --rm test-rust
+#   docker compose -f docker-compose.test.yml down
+
+services:
+  baradb:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: baradb:latest
+    ports:
+      - "9472:9472"
+    healthcheck:
+      test: ["CMD", "sh", "-c", "wget -qO- http://localhost:9912/health >/dev/null 2>&1"]
+      interval: 5s
+      timeout: 3s
+      retries: 5
+      start_period: 10s
+
+  test-python:
+    image: python:3.12-slim
+    depends_on:
+      baradb:
+        condition: service_healthy
+    environment:
+      - BARADB_HOST=baradb
+      - BARADB_PORT=9472
+    volumes:
+      - ./clients/python:/workspace
+    working_dir: /workspace
+    command: >
+      sh -c "
+        pip install pytest pytest-asyncio -q &&
+        pip install -e ".[dev]" -q &&
+        pytest tests/test_wire_protocol.py tests/test_query_builder.py -v &&
+        pytest tests/test_integration.py -v
+      "
+
+  test-javascript:
+    image: node:20-slim
+    depends_on:
+      baradb:
+        condition: service_healthy
+    environment:
+      - BARADB_HOST=baradb
+      - BARADB_PORT=9472
+    volumes:
+      - ./clients/javascript:/workspace
+    working_dir: /workspace
+    command: >
+      sh -c "
+        node --test tests/unit.test.js &&
+        node --test tests/integration.test.js
+      "
+
+  test-nim:
+    image: nimlang/nim:2.2.10
+    depends_on:
+      baradb:
+        condition: service_healthy
+    environment:
+      - BARADB_HOST=baradb
+      - BARADB_PORT=9472
+    volumes:
+      - ./clients/nim:/workspace
+      - ./clients/nim/src:/workspace/src
+    working_dir: /workspace
+    command: >
+      sh -c "
+        nim c --path:src -r tests/test_client.nim &&
+        nim c --path:src -r tests/test_integration.nim
+      "
+
+  test-ormin:
+    image: nimlang/nim:2.2.10
+    depends_on:
+      baradb:
+        condition: service_healthy
+    environment:
+      - BARADB_HOST=baradb
+      - BARADB_PORT=9472
+    volumes:
+      - ./clients/nim:/workspace
+    working_dir: /workspace/ormin
+    command: >
+      sh -c "
+        nimble install -y &&
+        nim c examples/baradb_basic.nim
+      "
+
+  test-rust:
+    image: rust:1.78
+    depends_on:
+      baradb:
+        condition: service_healthy
+    environment:
+      - BARADB_HOST=baradb
+      - BARADB_PORT=9472
+    volumes:
+      - ./clients/rust:/workspace
+    working_dir: /workspace
+    command: >
+      sh -c "
+        cargo test -- --test-threads=1
+      "

docs/ARCHITECTURE.md

@@ -90,6 +90,12 @@ The query layer processes BaraQL — a SQL-compatible query language with extens
 - **Quantization** (`quant.nim`): Scalar 8-bit/4-bit, product, and binary quantization for compression.
 - **SIMD Operations** (`simd.nim`): Unrolled loop distance computations (cosine, Euclidean, dot product, Manhattan).
 - **Batch Operations**: batchInsert, batchSearch, batchDistance for high-throughput.
+- **SQL Integration** (`query/executor.nim`):
+  - `VECTOR(n)` column type with dimension validation
+  - `CREATE INDEX ... USING hnsw` / `USING ivfpq`
+  - Distance functions: `cosine_distance()`, `euclidean_distance()`, `inner_product()`, `l1_distance()`, `l2_distance()`
+  - `<->` nearest-neighbor operator
+  - Automatic index maintenance on INSERT/UPDATE
 
 ### Graph Engine (`graph/`)
 - **Adjacency List** (`engine.nim`): Edge-weighted directed graph storage with forward/reverse adjacency.

docs/ar/baraql.md

@@ -97,5 +97,172 @@ RETURN friend.name;
 ```sql
 BEGIN;
 INSERT users { name := 'Alice', age := 30 };
+INSERT orders { user_id := last_insert_id(), total := 100 };
+COMMIT;
+
+-- مع نقطة حفظ
+BEGIN;
+INSERT users { name := 'Bob', age := 25 };
+SAVEPOINT sp1;
+INSERT orders { user_id := last_insert_id(), total := 200 };
+-- خطأ، التراجع إلى نقطة الحفظ
+ROLLBACK TO sp1;
 COMMIT;
 ```
+
+## البحث النصي الكامل
+
+```sql
+-- بحث أساسي
+SELECT * FROM articles
+WHERE MATCH(title, body) AGAINST('database programming');
+
+-- مع درجة الصلة
+SELECT title, relevance()
+FROM articles
+WHERE MATCH(title, body) AGAINST('Nim language')
+ORDER BY relevance() DESC;
+
+-- الوضع المنطقي
+SELECT * FROM articles
+WHERE MATCH(title, body) AGAINST('+Nim -Python' IN BOOLEAN MODE);
+
+-- البحث الضبابي
+SELECT * FROM articles
+WHERE MATCH(title) AGAINST('programing' WITH FUZZINESS 2);
+```
+
+## الدوال المحددة من المستخدم
+
+```sql
+-- تسجيل UDF
+CREATE FUNCTION greet(name str) -> str {
+  RETURN 'Hello, ' || name || '!';
+};
+
+-- استخدامها
+SELECT greet(name) FROM users;
+
+-- الدوال المدمجة
+SELECT abs(-5), sqrt(16), lower('HELLO'), len('test');
+```
+
+## تلميحات الاستعلام
+
+```sql
+-- فرض استخدام الفهرس
+SELECT /*+ USE_INDEX(idx_users_age) */ * FROM users WHERE age > 18;
+
+-- فرض البحث المتجهي التقريبي
+SELECT /*+ APPROXIMATE */ * FROM vectors
+ORDER BY cosine_distance(embedding, [...])
+LIMIT 10;
+
+-- التنفيذ المتوازي
+SELECT /*+ PARALLEL(4) */ * FROM large_table;
+```
+
+## دوال النوافذ
+
+```sql
+-- دوال الترتيب
+SELECT
+  name,
+  department,
+  ROW_NUMBER() OVER (PARTITION BY department ORDER BY salary DESC) AS rn,
+  RANK() OVER (PARTITION BY department ORDER BY salary DESC) AS r,
+  DENSE_RANK() OVER (PARTITION BY department ORDER BY salary DESC) AS dr
+FROM employees;
+
+-- دوال القيمة
+SELECT
+  name,
+  salary,
+  LAG(salary, 1, 0) OVER (ORDER BY salary) AS prev_salary,
+  LEAD(salary, 1, 0) OVER (ORDER BY salary) AS next_salary,
+  FIRST_VALUE(name) OVER (PARTITION BY department ORDER BY salary) AS cheapest,
+  LAST_VALUE(name) OVER (PARTITION BY department ORDER BY salary) AS most_expensive
+FROM employees;
+
+-- دوال التوزيع
+SELECT name, NTILE(4) OVER (ORDER BY salary) AS quartile FROM employees;
+```
+
+### مواصفات الإطار
+
+```sql
+-- إطار ROWS
+SUM(salary) OVER (
+  PARTITION BY department
+  ORDER BY hire_date
+  ROWS BETWEEN 1 PRECEDING AND CURRENT ROW
+)
+
+-- إطار RANGE
+SUM(salary) OVER (
+  PARTITION BY department
+  ORDER BY hire_date
+  RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW
+)
+```
+
+## ERP متعدد المستأجرين
+
+يدعم BaraDB تشغيل عدة شركات (مستأجرين) في مثيل قاعدة بيانات واحد، باستخدام **أمان مستوى الصف (RLS)** مع **متغيرات الجلسة**.
+
+### متغيرات الجلسة
+
+```sql
+SET app.tenant_id = 'company-123';
+SELECT current_setting('app.tenant_id') AS tenant;
+```
+
+### المستخدم / الدور الحالي
+
+```sql
+SELECT current_user AS me, current_role AS my_role;
+```
+
+### عزل المستأجر عبر RLS
+
+```sql
+-- تمكين RLS على جدول
+ALTER TABLE invoices ENABLE ROW LEVEL SECURITY;
+
+-- إنشاء سياسة تصفية حسب المستأجر
+CREATE POLICY tenant_isolation ON invoices
+  FOR SELECT USING (tenant_id = current_setting('app.tenant_id'));
+
+-- كل جلسة ترى فقط بياناتها
+SET app.tenant_id = 'company-a';
+SELECT * FROM invoices;  -- صفوف company-a فقط
+```
+
+### لماذا متعدد المستأجرين؟
+
+- **مثيل واحد، مستأجرون كثيرون** — لا حاجة لتشغيل 100 قاعدة بيانات منفصلة
+- **مستندات JSONB** — تخزين مخطط مرن، سهل إضافة حقول لكل مستأجر
+- **RLS يضمن العزل** — قاعدة البيانات تفرض حدود المستأجر، وليس فقط التطبيق
+
+## الكلمات المفتاحية المدعومة
+
+| الفئة | الكلمات المفتاحية |
+|----------|----------|
+| DQL | SELECT, FROM, WHERE, ORDER BY, GROUP BY, HAVING, LIMIT, OFFSET, DISTINCT |
+| DML | INSERT, UPDATE, DELETE, SET, VALUES |
+| DDL | CREATE TYPE, DROP TYPE, CREATE INDEX, DROP INDEX, ALTER TYPE |
+| Join | INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN, CROSS JOIN, ON |
+| Set | UNION, UNION ALL, INTERSECT, EXCEPT |
+| CTEs | WITH, RECURSIVE, AS |
+| Case | CASE, WHEN, THEN, ELSE, END |
+| Transaction | BEGIN, COMMIT, ROLLBACK, SAVEPOINT |
+| Graph | MATCH, RETURN, WHERE, shortestPath, type |
+| FTS | MATCH, AGAINST, relevance, IN BOOLEAN MODE, WITH FUZZINESS |
+| Vector | cosine_distance, euclidean_distance, inner_product, l1_distance, l2_distance, <-> |
+| JSON | ->, ->> |
+| FTS | @@ (تطابق BM25) |
+| Recovery | RECOVER TO TIMESTAMP |
+| Functions | count, sum, avg, min, max, stddev, variance, abs, sqrt, lower, upper, len, trim, substr, now, last_insert_id, current_setting |
+| Session | SET, current_setting, current_user, current_role |
+| Window | OVER, PARTITION BY, ROWS, RANGE, UNBOUNDED PRECEDING, CURRENT ROW, FOLLOWING |
+| Window Functions | ROW_NUMBER, RANK, DENSE_RANK, LEAD, LAG, FIRST_VALUE, LAST_VALUE, NTILE |