dimgigov
07a22d305d
- Fix 3× ResultShadowed in cypher.nim, recovery.nim, shell.nim - Remove 6× UnusedImport in test files - Build is now clean: 0 warnings, 294 tests pass - Add 4-week stabilization plan to PLAN.md (Sessions 9.1–9.4)
108 lines
4.3 KiB
Nim
108 lines
4.3 KiB
Nim
import std/unittest
|
|
import std/os
|
|
import std/strutils
|
|
import std/monotimes
|
|
import std/tables
|
|
import barabadb/query/executor as qexec
|
|
import barabadb/query/parser
|
|
import barabadb/storage/lsm
|
|
|
|
proc execSql(ctx: qexec.ExecutionContext, sql: string): qexec.ExecResult =
|
|
qexec.executeQuery(ctx, parse(sql))
|
|
|
|
# ---------------------------------------------------------------------------
|
|
suite "JOIN execution":
|
|
var db: LSMTree
|
|
var ctx: qexec.ExecutionContext
|
|
var testDir: string
|
|
|
|
setup:
|
|
testDir = getTempDir() / "baradb_join_test_" & $getCurrentProcessId() & "_" & $getMonoTime().ticks
|
|
createDir(testDir)
|
|
db = newLSMTree(testDir)
|
|
ctx = qexec.newExecutionContext(db)
|
|
discard execSql(ctx, "CREATE TABLE users (id INT, name TEXT)")
|
|
discard execSql(ctx, "CREATE TABLE orders (id INT, user_id INT, total REAL)")
|
|
discard execSql(ctx, "INSERT INTO users (id, name) VALUES (1, 'Alice')")
|
|
discard execSql(ctx, "INSERT INTO users (id, name) VALUES (2, 'Bob')")
|
|
discard execSql(ctx, "INSERT INTO orders (id, user_id, total) VALUES (10, 1, 99.5)")
|
|
discard execSql(ctx, "INSERT INTO orders (id, user_id, total) VALUES (20, 1, 23.0)")
|
|
discard execSql(ctx, "INSERT INTO orders (id, user_id, total) VALUES (30, 3, 150.0)")
|
|
|
|
teardown:
|
|
removeDir(testDir)
|
|
|
|
test "INNER JOIN returns matching rows only":
|
|
let r = execSql(ctx, "SELECT * FROM users u JOIN orders o ON u.id = o.user_id")
|
|
check r.rows.len == 2
|
|
check r.rows[0]["name"] == "Alice"
|
|
check r.rows[0]["total"] == "99.5"
|
|
|
|
test "LEFT JOIN keeps unmatched left rows":
|
|
let r = execSql(ctx, "SELECT * FROM users u LEFT JOIN orders o ON u.id = o.user_id")
|
|
check r.rows.len == 3
|
|
check r.rows[0]["name"] == "Alice"
|
|
check r.rows[1]["name"] == "Alice"
|
|
check r.rows[2]["name"] == "Bob"
|
|
check r.rows[2]["total"] == "\\N" # NULL represented as \N
|
|
|
|
test "RIGHT JOIN keeps unmatched right rows":
|
|
let r = execSql(ctx, "SELECT * FROM users u RIGHT JOIN orders o ON u.id = o.user_id")
|
|
check r.rows.len == 3
|
|
check r.rows[2]["id"] == "30"
|
|
check r.rows[2]["name"] == "\\N" # NULL
|
|
check r.rows[2]["total"] == "150.0"
|
|
|
|
test "FULL JOIN keeps all rows":
|
|
let r = execSql(ctx, "SELECT * FROM users u FULL JOIN orders o ON u.id = o.user_id")
|
|
check r.rows.len == 4
|
|
|
|
test "CROSS JOIN cartesian product":
|
|
let r = execSql(ctx, "SELECT * FROM users u CROSS JOIN orders o")
|
|
check r.rows.len == 6
|
|
|
|
test "aliased column projection":
|
|
let r = execSql(ctx, "SELECT u.name, o.total FROM users u JOIN orders o ON u.id = o.user_id")
|
|
check r.rows.len == 2
|
|
check r.rows[0]["u.name"] == "Alice"
|
|
check r.rows[0]["o.total"] == "99.5"
|
|
check "id" notin r.rows[0]
|
|
|
|
test "count after FULL JOIN":
|
|
let r = execSql(ctx, "SELECT COUNT(*) AS cnt FROM users u FULL JOIN orders o ON u.id = o.user_id")
|
|
check r.rows.len == 1
|
|
check r.rows[0]["cnt"] == "4"
|
|
|
|
test "count after CROSS JOIN":
|
|
let r = execSql(ctx, "SELECT COUNT(*) AS cnt FROM users u CROSS JOIN orders o")
|
|
check r.rows[0]["cnt"] == "6"
|
|
|
|
test "LATERAL JOIN with correlated subquery":
|
|
let r = execSql(ctx,
|
|
"SELECT u.name, recent.total FROM users u JOIN LATERAL (SELECT o.total FROM orders o WHERE o.user_id = u.id ORDER BY o.total DESC LIMIT 1) AS recent ON 1=1")
|
|
check r.rows.len == 1
|
|
check r.rows[0]["u.name"] == "Alice"
|
|
check r.rows[0]["recent.total"] == "99.5"
|
|
|
|
test "LATERAL JOIN returns no rows when subquery empty":
|
|
let r = execSql(ctx,
|
|
"SELECT u.name, x.total FROM users u JOIN LATERAL (SELECT o.total FROM orders o WHERE o.user_id = u.id AND o.total > 1000) AS x ON 1=1")
|
|
check r.rows.len == 0
|
|
|
|
test "LEFT LATERAL JOIN keeps unmatched rows":
|
|
let r = execSql(ctx,
|
|
"SELECT u.name, x.total FROM users u LEFT JOIN LATERAL (SELECT o.total FROM orders o WHERE o.user_id = u.id ORDER BY o.total DESC LIMIT 1) AS x ON 1=1")
|
|
check r.rows.len == 2
|
|
# Alice has match (99.5), Bob has no orders -> NULL
|
|
var foundBob = false
|
|
for row in r.rows:
|
|
if row["u.name"] == "Bob":
|
|
check row["x.total"] == "\\N"
|
|
foundBob = true
|
|
check foundBob
|
|
|
|
test "CROSS JOIN LATERAL":
|
|
let r = execSql(ctx,
|
|
"SELECT u.name, x.total FROM users u CROSS JOIN LATERAL (SELECT o.total FROM orders o WHERE o.user_id = u.id) AS x")
|
|
check r.rows.len == 2 # Alice has 2 orders, Bob has 0
|