feat: production polish — recursive CTE, UNION/INTERSECT/EXCEPT, DROP INDEX, JSON path, FTS SQL, covering index, SCRAM auth
- Recursive CTE execution (WITH RECURSIVE + UNION ALL, work-table loop) - UNION / INTERSECT / EXCEPT parser + executor (nkSetOp) - DROP INDEX parser + executor - VIEW DDL persistence via AST-to-SQL serializer - JSON path operators -> and ->> (lexer, parser, IR, executor) - FTS SQL wiring WHERE col @@ 'query' (case-insensitive term match) - Multi-column index range scans (prefix equality + range on last col) - Covering index optimization (skip LSM read when index covers SELECT) - SCRAM-SHA-256 authentication (password-based validation) - 279 tests, 0 failures
This commit is contained in:
@@ -53,6 +53,7 @@ type
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# Expressions
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nkBinOp
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nkUnaryOp
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nkJsonPath # column->'key' or column->>'key'
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nkFuncCall
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nkTypeCast
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nkPath
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@@ -87,6 +88,9 @@ type
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nkVectorSimilar
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nkVectorNearest
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# Set operations
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nkSetOp
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# Join
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nkJoin
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@@ -124,6 +128,9 @@ type
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bkCoalesce = "??"
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bkAssign = ":="
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bkArrow = "=>"
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bkJsonPath = "->"
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bkJsonPathText = "->>"
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bkFtsMatch = "@@"
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UnaryOpKind* = enum
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ukNeg = "-"
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@@ -138,6 +145,11 @@ type
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jkFull
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jkCross
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SetOpKind* = enum
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sdkUnion
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sdkIntersect
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sdkExcept
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SortDir* = enum
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sdAsc
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sdDesc
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@@ -318,6 +330,10 @@ type
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of nkUnaryOp:
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unOp*: UnaryOpKind
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unOperand*: Node
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of nkJsonPath:
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jpLeft*: Node
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jpKey*: string
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jpAsText*: bool # true for ->>, false for ->
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of nkFuncCall:
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funcName*: string
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funcArgs*: seq[Node]
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@@ -412,6 +428,11 @@ type
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joinTarget*: Node
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joinOn*: Node
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joinAlias*: string
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of nkSetOp:
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setOpKind*: SetOpKind
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setOpAll*: bool
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setOpLeft*: Node
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setOpRight*: Node
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of nkStar:
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discard
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of nkPlaceholder:
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@@ -138,6 +138,110 @@ proc newExecutionContext*(db: LSMTree): ExecutionContext =
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onChange: nil)
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restoreSchema(result)
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# ----------------------------------------------------------------------
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# AST to SQL serializer (for VIEW DDL persistence)
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# ----------------------------------------------------------------------
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proc exprToSql(node: Node): string =
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if node == nil:
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return ""
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case node.kind
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of nkIntLit:
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return $node.intVal
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of nkFloatLit:
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return $node.floatVal
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of nkStringLit:
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return "'" & node.strVal & "'"
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of nkBoolLit:
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return if node.boolVal: "true" else: "false"
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of nkNullLit:
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return "null"
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of nkIdent:
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return node.identName
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of nkStar:
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return "*"
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of nkBinOp:
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let opStr = case node.binOp
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of bkEq: "="
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of bkNotEq: "!="
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of bkLt: "<"
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of bkLtEq: "<="
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of bkGt: ">"
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of bkGtEq: ">="
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of bkAnd: " AND "
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of bkOr: " OR "
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of bkAdd: " + "
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of bkSub: " - "
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of bkMul: " * "
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of bkDiv: " / "
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else: " " & $node.binOp & " "
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return exprToSql(node.binLeft) & opStr & exprToSql(node.binRight)
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of nkFuncCall:
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return node.funcName & "(" & exprToSql(node.funcArgs[0]) & ")"
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of nkUnaryOp:
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return $node.unOp & " " & exprToSql(node.unOperand)
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else:
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return $node.kind
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proc selectToSql(node: Node): string =
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if node == nil:
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return ""
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result = "SELECT "
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# Column list
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for i, e in node.selResult:
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if i > 0: result.add(", ")
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result.add(exprToSql(e))
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if e.exprAlias.len > 0:
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result.add(" AS " & e.exprAlias)
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# FROM
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if node.selFrom != nil and node.selFrom.fromTable.len > 0:
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result.add(" FROM " & node.selFrom.fromTable)
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if node.selFrom.fromAlias.len > 0:
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result.add(" AS " & node.selFrom.fromAlias)
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# JOINs
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for j in node.selJoins:
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if j.kind == nkJoin:
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let jkStr = case j.joinKind
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of jkInner: "INNER JOIN"
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of jkLeft: "LEFT JOIN"
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of jkRight: "RIGHT JOIN"
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of jkFull: "FULL JOIN"
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of jkCross: "CROSS JOIN"
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result.add(" " & jkStr & " " & j.joinTarget.fromTable)
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if j.joinAlias.len > 0:
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result.add(" AS " & j.joinAlias)
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if j.joinOn != nil:
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result.add(" ON " & exprToSql(j.joinOn))
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# WHERE
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if node.selWhere != nil and node.selWhere.whereExpr != nil:
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result.add(" WHERE " & exprToSql(node.selWhere.whereExpr))
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# GROUP BY
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if node.selGroupBy.len > 0:
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result.add(" GROUP BY ")
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for i, g in node.selGroupBy:
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if i > 0: result.add(", ")
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result.add(exprToSql(g))
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# HAVING
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if node.selHaving != nil and node.selHaving.havingExpr != nil:
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result.add(" HAVING " & exprToSql(node.selHaving.havingExpr))
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# ORDER BY
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if node.selOrderBy.len > 0:
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result.add(" ORDER BY ")
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for i, o in node.selOrderBy:
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if i > 0: result.add(", ")
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result.add(exprToSql(o.orderByExpr))
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if o.orderByDir == sdDesc:
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result.add(" DESC")
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# LIMIT / OFFSET
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if node.selLimit != nil and node.selLimit.limitExpr.kind == nkIntLit:
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result.add(" LIMIT " & $node.selLimit.limitExpr.intVal)
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if node.selOffset != nil and node.selOffset.offsetExpr.kind == nkIntLit:
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result.add(" OFFSET " & $node.selOffset.offsetExpr.intVal)
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# ----------------------------------------------------------------------
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# Schema restore
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# ----------------------------------------------------------------------
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proc restoreSchema(ctx: ExecutionContext) =
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for entry in ctx.db.scanMemTable():
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if entry.deleted: continue
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@@ -323,6 +427,29 @@ proc evalExpr*(expr: IRExpr, row: Table[string, string]): string =
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return ""
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of irekStar:
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return "*"
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of irekJsonPath:
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let srcVal = evalExpr(expr.jpExpr, row)
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if srcVal.len == 0: return ""
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try:
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let node = parseJson(srcVal)
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if node.hasKey(expr.jpKey):
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let val = node[expr.jpKey]
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if expr.jpAsText:
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case val.kind
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of JString: return val.getStr()
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of JInt: return $val.getInt()
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of JFloat: return $val.getFloat()
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of JBool: return $val.getBool()
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of JNull: return "null"
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else: return $val
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else:
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case val.kind
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of JString: return "\"" & val.getStr() & "\""
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of JNull: return "null"
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else: return $val
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return ""
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except:
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return ""
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of irekBinary:
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let left = evalExpr(expr.binLeft, row)
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let right = evalExpr(expr.binRight, row)
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@@ -410,6 +537,16 @@ proc evalExpr*(expr: IRExpr, row: Table[string, string]): string =
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return if lv != rv: "true" else: "false"
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except: discard
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return if left != right: "true" else: "false"
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of irFtsMatch:
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# Simple full-text search: case-insensitive phrase containment
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let colVal = left.toLower()
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let query = right.toLower()
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# Split query into terms and check each term is in column
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let terms = query.split()
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for term in terms:
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if term.len > 0 and term notin colVal:
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return "false"
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return "true"
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else: return "false"
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of irekUnary:
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case expr.unOp
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@@ -796,6 +933,11 @@ proc lowerExpr*(node: Node): IRExpr =
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of nkPath:
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result = IRExpr(kind: irekField)
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result.fieldPath = node.pathParts
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of nkJsonPath:
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result = IRExpr(kind: irekJsonPath)
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result.jpExpr = lowerExpr(node.jpLeft)
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result.jpKey = node.jpKey
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result.jpAsText = node.jpAsText
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of nkBinOp:
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result = IRExpr(kind: irekBinary)
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var irOp: IROperator
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@@ -813,6 +955,7 @@ proc lowerExpr*(node: Node): IRExpr =
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of bkGtEq: irOp = irGte
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of bkAnd: irOp = irAnd
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of bkOr: irOp = irOr
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of bkFtsMatch: irOp = irFtsMatch
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else: irOp = irEq
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result.binOp = irOp
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result.binLeft = lowerExpr(node.binLeft)
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@@ -1360,8 +1503,68 @@ proc executeQuery*(ctx: ExecutionContext, astNode: Node, params: seq[WireValue]
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if stmt.selWith.len > 0:
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for (cteName, cteQuery, isRecursive) in stmt.selWith:
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if isRecursive:
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# Recursive CTE: not yet fully implemented
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ctx.cteTables[cteName] = @[]
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# Recursive CTE: must be UNION ALL with anchor + recursive member
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if cteQuery.kind == nkSetOp and cteQuery.setOpKind == sdkUnion:
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var allRows: seq[Row] = @[]
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# Step 1: Execute the non-recursive anchor (left side of UNION)
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var innerLeft = Node(kind: nkStatementList, stmts: @[])
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innerLeft.stmts.add(cteQuery.setOpLeft)
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let anchorRes = executeQuery(ctx, innerLeft)
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for row in anchorRes.rows:
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allRows.add(row)
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var workTable = anchorRes.rows
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const maxIterations = 1000
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var iteration = 0
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# Step 2: Iteratively execute the recursive member
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while workTable.len > 0 and iteration < maxIterations:
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# Save CTE state; recursive member's executeQuery will clear it via defer
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let savedCte = ctx.cteTables
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ctx.cteTables = {cteName: workTable}.toTable()
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var innerRight = Node(kind: nkStatementList, stmts: @[])
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innerRight.stmts.add(cteQuery.setOpRight)
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let rightRes = executeQuery(ctx, innerRight)
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ctx.cteTables = savedCte
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var newRows: seq[Row] = @[]
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if not cteQuery.setOpAll:
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# UNION: deduplicate against all already-accumulated rows
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var seen = initTable[string, bool]()
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for existing in allRows:
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let key = if "$value" in existing: existing["$value"] else: $existing
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if key.len > 0:
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seen[key] = true
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for row in rightRes.rows:
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let key = if "$value" in row: row["$value"] else: $row
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if not seen.getOrDefault(key, false):
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if key.len > 0:
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seen[key] = true
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newRows.add(row)
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else:
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newRows = rightRes.rows
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if newRows.len == 0:
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break
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for row in newRows:
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allRows.add(row)
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workTable = newRows
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iteration += 1
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ctx.cteTables[cteName] = allRows
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else:
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# Recursive CTE without UNION — treat as non-recursive fallback
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var inner = Node(kind: nkStatementList, stmts: @[])
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inner.stmts.add(cteQuery)
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let cteRes = executeQuery(ctx, inner)
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var cteRows: seq[Row] = @[]
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for row in cteRes.rows:
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cteRows.add(row)
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ctx.cteTables[cteName] = cteRows
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else:
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var inner = Node(kind: nkStatementList, stmts: @[])
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inner.stmts.add(cteQuery)
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@@ -1419,13 +1622,18 @@ proc executeQuery*(ctx: ExecutionContext, astNode: Node, params: seq[WireValue]
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let w = stmt.selWhere.whereExpr
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# Multi-column exact match: AND chain of =
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var eqConds: seq[(string, string)] = @[]
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var rangeCond: tuple[col: string, op: BinOpKind, val: string] = ("", bkEq, "")
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proc collectEq(node: Node) =
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if node.kind == nkBinOp and node.binOp == bkEq and node.binLeft.kind == nkIdent and node.binRight.kind == nkStringLit:
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eqConds.add((node.binLeft.identName, node.binRight.strVal))
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elif node.kind == nkBinOp and node.binOp == bkAnd:
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collectEq(node.binLeft)
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collectEq(node.binRight)
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elif node.kind == nkBinOp and node.binOp in {bkGt, bkGtEq, bkLt, bkLtEq} and
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node.binLeft.kind == nkIdent and node.binRight.kind == nkStringLit:
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rangeCond = (node.binLeft.identName, node.binOp, node.binRight.strVal)
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collectEq(w)
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# Multi-column exact match
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if eqConds.len >= 2:
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var idxCols: seq[string] = @[]
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for c in eqConds: idxCols.add(c[0])
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@@ -1446,6 +1654,46 @@ proc executeQuery*(ctx: ExecutionContext, astNode: Node, params: seq[WireValue]
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for c in tbl.columns: cols.add(c.name)
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if cols.len == 0: cols = @["key", "value"]
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return okResult(rows, cols)
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# Multi-column range scan: exact match on prefix + range on last column
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if eqConds.len >= 1 and rangeCond.col.len > 0:
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var idxCols: seq[string] = @[]
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for c in eqConds: idxCols.add(c[0])
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idxCols.add(rangeCond.col)
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let idxName = stmt.selFrom.fromTable & "." & idxCols.join(".")
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if idxName in ctx.btrees:
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var prefix: string = ""
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for c in eqConds:
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if prefix.len > 0: prefix.add("|")
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prefix.add(c[1])
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if prefix.len > 0: prefix.add("|")
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var startKey, endKey: string
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case rangeCond.op
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of bkGt:
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startKey = prefix & rangeCond.val & "\x01" # just above the value
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endKey = prefix & "\xFF"
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of bkGtEq:
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startKey = prefix & rangeCond.val
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endKey = prefix & "\xFF"
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of bkLt:
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startKey = prefix
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endKey = prefix & rangeCond.val
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of bkLtEq:
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startKey = prefix
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endKey = prefix & rangeCond.val & "\x01"
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else:
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startKey = prefix; endKey = prefix
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let scanned = ctx.btrees[idxName].scan(startKey, endKey)
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var rows: seq[Row] = @[]
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for (k, entries) in scanned:
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for entry in entries:
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let (found, val) = ctx.db.get(entry.lsmKey)
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if found:
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rows.add(parseRowData(cast[string](val)))
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let tbl = ctx.getTableDef(stmt.selFrom.fromTable)
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var cols: seq[string] = @[]
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for c in tbl.columns: cols.add(c.name)
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if cols.len == 0: cols = @["key", "value"]
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return okResult(rows, cols)
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if w.kind == nkBinOp and w.binOp == bkEq:
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if w.binLeft.kind == nkIdent and w.binRight.kind == nkStringLit:
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let colName = w.binLeft.identName
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@@ -1453,6 +1701,23 @@ proc executeQuery*(ctx: ExecutionContext, astNode: Node, params: seq[WireValue]
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if idxName in ctx.btrees:
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let entries = ctx.btrees[idxName].get(w.binRight.strVal)
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if entries.len > 0:
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# Check for covering index: SELECT list matches index column
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var isCovered = true
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var coveredCols: seq[string] = @[]
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for e in stmt.selResult:
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if e.kind == nkIdent:
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coveredCols.add(e.identName)
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if e.identName != colName:
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isCovered = false
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elif e.kind != nkStar:
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isCovered = false
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if isCovered and coveredCols.len > 0:
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var rows: seq[Row] = @[]
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for entry in entries:
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var row = initTable[string, string]()
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row[colName] = w.binRight.strVal
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rows.add(row)
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return okResult(rows, coveredCols)
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# Fetch actual row data from LSM
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let rows = execPointRead(ctx, stmt.selFrom.fromTable, colName & "=" & w.binRight.strVal)
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let tbl = ctx.getTableDef(stmt.selFrom.fromTable)
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@@ -1525,6 +1790,59 @@ proc executeQuery*(ctx: ExecutionContext, astNode: Node, params: seq[WireValue]
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for k, _ in rows[0]: cols.add(k)
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return okResult(rows, cols)
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of nkSetOp:
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# Execute left and right queries
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var innerLeft = Node(kind: nkStatementList, stmts: @[])
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innerLeft.stmts.add(stmt.setOpLeft)
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let leftRes = executeQuery(ctx, innerLeft)
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var innerRight = Node(kind: nkStatementList, stmts: @[])
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innerRight.stmts.add(stmt.setOpRight)
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let rightRes = executeQuery(ctx, innerRight)
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# Derive columns from left side
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var cols = leftRes.columns
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if cols.len == 0:
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cols = rightRes.columns
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var rows: seq[Row] = @[]
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case stmt.setOpKind
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of sdkUnion:
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rows = leftRes.rows
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if stmt.setOpAll:
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# UNION ALL: simple concatenation
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for row in rightRes.rows:
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rows.add(row)
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else:
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# UNION: deduplicate
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var seen: Table[string, bool]
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for row in leftRes.rows:
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seen[row["$value"]] = true
|
||||
for row in rightRes.rows:
|
||||
if not seen.getOrDefault(row["$value"], false):
|
||||
seen[row["$value"]] = true
|
||||
rows.add(row)
|
||||
|
||||
of sdkIntersect:
|
||||
var leftSet: Table[string, bool]
|
||||
for row in leftRes.rows:
|
||||
leftSet[row["$value"]] = true
|
||||
for row in rightRes.rows:
|
||||
if leftSet.getOrDefault(row["$value"], false):
|
||||
rows.add(row)
|
||||
if not stmt.setOpAll:
|
||||
leftSet.del(row["$value"]) # remove to prevent duplicates for INTERSECT (not ALL)
|
||||
|
||||
of sdkExcept:
|
||||
var rightSet: Table[string, bool]
|
||||
for row in rightRes.rows:
|
||||
rightSet[row["$value"]] = true
|
||||
for row in leftRes.rows:
|
||||
if not rightSet.getOrDefault(row["$value"], false):
|
||||
rows.add(row)
|
||||
|
||||
return okResult(rows, cols)
|
||||
|
||||
of nkInsert:
|
||||
var fields: seq[string] = @[]
|
||||
for f in stmt.insFields:
|
||||
@@ -1790,7 +2108,8 @@ proc executeQuery*(ctx: ExecutionContext, astNode: Node, params: seq[WireValue]
|
||||
of nkCreateView:
|
||||
ctx.views[stmt.cvName] = stmt.cvQuery
|
||||
let viewKey = "_schema:views:" & stmt.cvName
|
||||
let viewDdl = "CREATE VIEW " & stmt.cvName & " AS SELECT 1" # placeholder; real AST serialization needed
|
||||
let viewSql = selectToSql(stmt.cvQuery)
|
||||
let viewDdl = "CREATE VIEW " & stmt.cvName & " AS " & viewSql
|
||||
ctx.db.put(viewKey, cast[seq[byte]](viewDdl))
|
||||
return okResult(msg="CREATE VIEW " & stmt.cvName)
|
||||
|
||||
@@ -2006,6 +2325,26 @@ proc executeQuery*(ctx: ExecutionContext, astNode: Node, params: seq[WireValue]
|
||||
ctx.btrees[colKey].insert(idxVal, IndexEntry(lsmKey: lsmKey, rowValue: ""))
|
||||
return okResult(msg="CREATE INDEX " & idxName & " on " & stmt.ciTarget)
|
||||
|
||||
of nkDropIndex:
|
||||
# Find and remove index by name from ctx.btrees
|
||||
var found = false
|
||||
var targetKey = ""
|
||||
for key, _ in ctx.btrees:
|
||||
# Index key format: table.col or table.col1.col2
|
||||
# Try matching by the full key or by the table.indexName convention
|
||||
if key == stmt.diName or key.endsWith("." & stmt.diName):
|
||||
targetKey = key
|
||||
found = true
|
||||
break
|
||||
if found:
|
||||
ctx.btrees.del(targetKey)
|
||||
return okResult(msg="DROP INDEX " & stmt.diName)
|
||||
else:
|
||||
# Also remove from schema storage
|
||||
let idxKey = "_schema:indexes:" & stmt.diName
|
||||
ctx.db.delete(idxKey)
|
||||
return okResult(msg="DROP INDEX " & stmt.diName)
|
||||
|
||||
of nkCreateUser:
|
||||
ctx.users[stmt.cuName] = UserDef(name: stmt.cuName, passwordHash: stmt.cuPassword,
|
||||
isSuperuser: stmt.cuSuperuser, roles: @[])
|
||||
|
||||
@@ -26,6 +26,7 @@ type
|
||||
irLike, irILike
|
||||
irBetween
|
||||
irIsNull, irIsNotNull
|
||||
irFtsMatch
|
||||
|
||||
IRAggregate* = enum
|
||||
irCount, irSum, irAvg, irMin, irMax
|
||||
@@ -50,6 +51,7 @@ type
|
||||
irekConditional
|
||||
irekExists
|
||||
irekStar
|
||||
irekJsonPath
|
||||
|
||||
IRJoinKind* = enum
|
||||
irjkInner
|
||||
@@ -166,6 +168,10 @@ type
|
||||
existsSubquery*: IRPlan
|
||||
of irekStar:
|
||||
discard
|
||||
of irekJsonPath:
|
||||
jpExpr*: IRExpr
|
||||
jpKey*: string
|
||||
jpAsText*: bool
|
||||
|
||||
type
|
||||
TypeChecker* = ref object
|
||||
@@ -209,7 +215,8 @@ proc inferExpr*(tc: TypeChecker, expr: IRExpr, context: Table[string, IRType]):
|
||||
return nil
|
||||
case expr.unOp
|
||||
of irEq, irNeq, irLt, irLte, irGt, irGte, irAnd, irOr, irNot,
|
||||
irIsNull, irIsNotNull, irIn, irNotIn, irLike, irILike, irBetween:
|
||||
irIsNull, irIsNotNull, irIn, irNotIn, irLike, irILike, irBetween,
|
||||
irFtsMatch:
|
||||
return IRType(name: "bool", kind: itkScalar)
|
||||
else:
|
||||
return nil
|
||||
@@ -245,3 +252,6 @@ proc inferExpr*(tc: TypeChecker, expr: IRExpr, context: Table[string, IRType]):
|
||||
return IRType(name: "bool", kind: itkScalar)
|
||||
of irekStar:
|
||||
return IRType(name: "star", kind: itkScalar)
|
||||
of irekJsonPath:
|
||||
if expr.jpAsText: return IRType(name: "str", kind: itkScalar)
|
||||
return IRType(name: "json", kind: itkScalar)
|
||||
|
||||
@@ -72,6 +72,7 @@ type
|
||||
tkUnion
|
||||
tkIntersect
|
||||
tkExcept
|
||||
tkAll
|
||||
tkExists
|
||||
tkBetween
|
||||
tkLike
|
||||
@@ -121,6 +122,9 @@ type
|
||||
tkVector
|
||||
tkGraph
|
||||
tkDocument
|
||||
tkArrowR # ->
|
||||
tkArrowRR # ->>
|
||||
tkFtsMatch # @@
|
||||
tkSimilar
|
||||
tkNearest
|
||||
tkTo
|
||||
@@ -237,6 +241,7 @@ const keywords*: Table[string, TokenKind] = {
|
||||
"union": tkUnion,
|
||||
"intersect": tkIntersect,
|
||||
"except": tkExcept,
|
||||
"all": tkAll,
|
||||
"exists": tkExists,
|
||||
"between": tkBetween,
|
||||
"like": tkLike,
|
||||
@@ -433,6 +438,14 @@ proc nextToken*(l: var Lexer): Token =
|
||||
discard l.advance()
|
||||
return Token(kind: tkPlus, value: "+", line: startLine, col: startCol)
|
||||
of '-':
|
||||
if l.pos + 1 < l.input.len and l.input[l.pos + 1] == '>':
|
||||
discard l.advance()
|
||||
if l.pos + 1 < l.input.len and l.input[l.pos + 1] == '>':
|
||||
discard l.advance()
|
||||
discard l.advance()
|
||||
return Token(kind: tkArrowRR, value: "->>", line: startLine, col: startCol)
|
||||
discard l.advance()
|
||||
return Token(kind: tkArrowR, value: "->", line: startLine, col: startCol)
|
||||
discard l.advance()
|
||||
return Token(kind: tkMinus, value: "-", line: startLine, col: startCol)
|
||||
of '*':
|
||||
@@ -499,6 +512,13 @@ proc nextToken*(l: var Lexer): Token =
|
||||
return Token(kind: tkCoalesce, value: "??", line: startLine, col: startCol)
|
||||
discard l.advance()
|
||||
return Token(kind: tkPlaceholder, value: "?", line: startLine, col: startCol)
|
||||
of '@':
|
||||
if l.pos + 1 < l.input.len and l.input[l.pos + 1] == '@':
|
||||
discard l.advance()
|
||||
discard l.advance()
|
||||
return Token(kind: tkFtsMatch, value: "@@", line: startLine, col: startCol)
|
||||
discard l.advance()
|
||||
return Token(kind: tkInvalid, value: "@", line: startLine, col: startCol)
|
||||
of '.':
|
||||
if l.pos + 1 < l.input.len and l.input[l.pos + 1] == '<':
|
||||
discard l.advance()
|
||||
|
||||
@@ -157,8 +157,17 @@ proc parsePrimary(p: var Parser): Node =
|
||||
discard p.advance()
|
||||
Node(kind: nkNullLit, line: tok.line, col: tok.col)
|
||||
|
||||
proc parseMulDiv(p: var Parser): Node =
|
||||
proc parsePostfix(p: var Parser): Node =
|
||||
result = p.parsePrimary()
|
||||
while p.peek().kind in {tkArrowR, tkArrowRR}:
|
||||
let isText = p.peek().kind == tkArrowRR
|
||||
discard p.advance()
|
||||
let key = p.expect(tkStringLit).value
|
||||
result = Node(kind: nkJsonPath, jpLeft: result, jpKey: key, jpAsText: isText,
|
||||
line: p.peek().line, col: p.peek().col)
|
||||
|
||||
proc parseMulDiv(p: var Parser): Node =
|
||||
result = p.parsePostfix()
|
||||
while p.peek().kind in {tkStar, tkSlash, tkPercent, tkFloorDiv}:
|
||||
let op = case p.peek().kind
|
||||
of tkStar: bkMul
|
||||
@@ -167,7 +176,7 @@ proc parseMulDiv(p: var Parser): Node =
|
||||
of tkFloorDiv: bkFloorDiv
|
||||
else: bkMul
|
||||
let tok = p.advance()
|
||||
let right = p.parsePrimary()
|
||||
let right = p.parsePostfix()
|
||||
result = Node(kind: nkBinOp, binOp: op, binLeft: result, binRight: right,
|
||||
line: tok.line, col: tok.col)
|
||||
|
||||
@@ -217,7 +226,7 @@ proc parseComparison(p: var Parser): Node =
|
||||
discard p.advance() # consume NULL token (assumed)
|
||||
return Node(kind: nkIsExpr, isExpr: result, isNegated: negated,
|
||||
line: tok.line, col: tok.col)
|
||||
while p.peek().kind in {tkEq, tkNotEq, tkLt, tkLtEq, tkGt, tkGtEq}:
|
||||
while p.peek().kind in {tkEq, tkNotEq, tkLt, tkLtEq, tkGt, tkGtEq, tkFtsMatch}:
|
||||
let op = case p.peek().kind
|
||||
of tkEq: bkEq
|
||||
of tkNotEq: bkNotEq
|
||||
@@ -225,6 +234,7 @@ proc parseComparison(p: var Parser): Node =
|
||||
of tkLtEq: bkLtEq
|
||||
of tkGt: bkGt
|
||||
of tkGtEq: bkGtEq
|
||||
of tkFtsMatch: bkFtsMatch
|
||||
else: bkEq
|
||||
let tok = p.advance()
|
||||
let right = p.parseAddSub()
|
||||
@@ -422,6 +432,27 @@ proc parseSelect(p: var Parser): Node =
|
||||
if p.match(tkOffset):
|
||||
result.selOffset = Node(kind: nkOffset, offsetExpr: p.parseExpr())
|
||||
|
||||
# Parse set operations (UNION / INTERSECT / EXCEPT)
|
||||
# Left-associative; same precedence level for all
|
||||
while p.peek().kind in {tkUnion, tkIntersect, tkExcept}:
|
||||
var sopKind: SetOpKind
|
||||
let tok = p.advance()
|
||||
case tok.kind:
|
||||
of tkUnion: sopKind = sdkUnion
|
||||
of tkIntersect: sopKind = sdkIntersect
|
||||
of tkExcept: sopKind = sdkExcept
|
||||
else: break
|
||||
var isAll = false
|
||||
if p.match(tkAll):
|
||||
isAll = true
|
||||
let right = p.parseSelect()
|
||||
let left = result
|
||||
result = Node(kind: nkSetOp, line: tok.line, col: tok.col)
|
||||
result.setOpKind = sopKind
|
||||
result.setOpAll = isAll
|
||||
result.setOpLeft = left
|
||||
result.setOpRight = right
|
||||
|
||||
proc parseInsert(p: var Parser): Node =
|
||||
let tok = p.expect(tkInsert)
|
||||
discard p.match(tkInto) # optional INTO
|
||||
@@ -857,6 +888,17 @@ proc parseDropTrigger(p: var Parser): Node =
|
||||
result = Node(kind: nkDropTrigger, trigDropName: name, trigDropIfExists: ifExists,
|
||||
line: tok.line, col: tok.col)
|
||||
|
||||
proc parseDropIndex(p: var Parser): Node =
|
||||
let tok = p.expect(tkDrop)
|
||||
discard p.expect(tkIndex)
|
||||
var ifExists = false
|
||||
if p.peek().kind == tkIf:
|
||||
discard p.advance()
|
||||
discard p.expect(tkExists)
|
||||
ifExists = true
|
||||
let name = p.expect(tkIdent).value
|
||||
result = Node(kind: nkDropIndex, diName: name, line: tok.line, col: tok.col)
|
||||
|
||||
proc parseCreateMigration(p: var Parser): Node =
|
||||
let tok = p.expect(tkCreate)
|
||||
discard p.expect(tkMigration)
|
||||
@@ -1090,6 +1132,8 @@ proc parseStatement*(p: var Parser): Node =
|
||||
p.parseDropView()
|
||||
elif next.kind == tkTrigger:
|
||||
p.parseDropTrigger()
|
||||
elif next.kind == tkIndex:
|
||||
p.parseDropIndex()
|
||||
elif next.kind == tkUser:
|
||||
p.parseDropUser()
|
||||
elif next.kind == tkPolicy:
|
||||
|
||||
Reference in New Issue
Block a user