Fix ids query DSL (#1135)

By accident I noticed our SQL generated for `ids` looks quite
nonsensical, e.g. that's what's generated for my new very simple
request:
```
WHERE "@timestamp" IN toDateTime64('2024-12-21 07:29:03.367', '2024-12-21 07:29:02.992', 3)
```
Also noticed we have 0 tests for this query. Fixing those 2 things here.
(adding `TupleExpr` for just this 1 usecase might seem unnecessary, but
it's needed in my 2 other open PRs, so I'd do that)

Also, minor: changed `return model.NewSimpleQuery(nil, false)` to more
descriptive `return model.NewSimpleQueryInvalid()` everywhere.

quesma/logger/log_with_throttling.go

@@ -8,7 +8,7 @@ import (
 	"time"
 )
 
-var throttleMap = util.SyncMap[string, time.Time]{}
+var throttleMap = util.NewSyncMap[string, time.Time]()
 
 const throttleDuration = 30 * time.Minute
 
@@ -25,3 +25,14 @@ func WarnWithCtxAndThrottling(ctx context.Context, aggrName, paramName, format s
 		throttleMap.Store(mapKey, time.Now())
 	}
 }
+
+// WarnWithThrottling - logs a warning message with throttling.
+// We only log once per throttleDuration for each warnName, so that we don't spam the logs.
+func WarnWithThrottling(warnName, format string, v ...any) {
+	timestamp, ok := throttleMap.Load(warnName)
+	weThrottle := ok && time.Since(timestamp) < throttleDuration
+	if !weThrottle {
+		Warn().Msgf(format, v...)
+		throttleMap.Store(warnName, time.Now())
+	}
+}

quesma/model/base_visitor.go

@@ -5,6 +5,7 @@ package model
 type BaseExprVisitor struct {
 	OverrideVisitFunction       func(b *BaseExprVisitor, e FunctionExpr) interface{}
 	OverrideVisitLiteral        func(b *BaseExprVisitor, l LiteralExpr) interface{}
+	OverrideVisitTuple          func(b *BaseExprVisitor, t TupleExpr) interface{}
 	OverrideVisitInfix          func(b *BaseExprVisitor, e InfixExpr) interface{}
 	OverrideVisitColumnRef      func(b *BaseExprVisitor, e ColumnRef) interface{}
 	OverrideVisitPrefixExpr     func(b *BaseExprVisitor, e PrefixExpr) interface{}
@@ -43,6 +44,14 @@ func (v *BaseExprVisitor) VisitLiteral(e LiteralExpr) interface{} {
 
 	return NewLiteral(e.Value)
 }
+
+func (v *BaseExprVisitor) VisitTuple(e TupleExpr) interface{} {
+	if v.OverrideVisitTuple != nil {
+		return v.OverrideVisitTuple(v, e)
+	}
+	return NewTupleExpr(v.VisitChildren(e.Exprs)...)
+}
+
 func (v *BaseExprVisitor) VisitInfix(e InfixExpr) interface{} {
 	if v.OverrideVisitInfix != nil {
 		return v.OverrideVisitInfix(v, e)

quesma/model/expr.go

@@ -12,6 +12,7 @@ type Expr interface {
 var (
 	InvalidExpr = Expr(nil)
 	TrueExpr    = NewLiteral(true)
+	FalseExpr   = NewLiteral(false)
 )
 
 // ColumnRef is a reference to a column in a table, we can enrich it with more information (e.g. type used) as we go
@@ -86,6 +87,18 @@ func (e LiteralExpr) Accept(v ExprVisitor) interface{} {
 	return v.VisitLiteral(e)
 }
 
+type TupleExpr struct {
+	Exprs []Expr
+}
+
+func NewTupleExpr(exprs ...Expr) TupleExpr {
+	return TupleExpr{Exprs: exprs}
+}
+
+func (e TupleExpr) Accept(v ExprVisitor) interface{} {
+	return v.VisitTuple(e)
+}
+
 type InfixExpr struct {
 	Left  Expr
 	Op    string
@@ -278,6 +291,7 @@ func (e CTE) Accept(v ExprVisitor) interface{} {
 type ExprVisitor interface {
 	VisitFunction(e FunctionExpr) interface{}
 	VisitLiteral(l LiteralExpr) interface{}
+	VisitTuple(t TupleExpr) interface{}
 	VisitInfix(e InfixExpr) interface{}
 	VisitColumnRef(e ColumnRef) interface{}
 	VisitPrefixExpr(e PrefixExpr) interface{}

quesma/model/expr_string_renderer.go

@@ -4,6 +4,7 @@ package model
 
 import (
 	"fmt"
+	"quesma/logger"
 	"quesma/quesma/types"
 	"regexp"
 	"sort"
@@ -68,6 +69,22 @@ func (v *renderer) VisitLiteral(l LiteralExpr) interface{} {
 	return fmt.Sprintf("%v", l.Value)
 }
 
+func (v *renderer) VisitTuple(t TupleExpr) interface{} {
+	switch len(t.Exprs) {
+	case 0:
+		logger.WarnWithThrottling("VisitTuple", "TupleExpr with no expressions")
+		return "()"
+	case 1:
+		return t.Exprs[0].Accept(v)
+	default:
+		args := make([]string, len(t.Exprs))
+		for i, arg := range t.Exprs {
+			args[i] = arg.Accept(v).(string)
+		}
+		return fmt.Sprintf("tuple(%s)", strings.Join(args, ", ")) // can omit "tuple", but I think SQL's more readable with it
+	}
+}
+
 func (v *renderer) VisitInfix(e InfixExpr) interface{} {
 	var lhs, rhs interface{} // TODO FOR NOW LITTLE PARANOID BUT HELPS ME NOT SEE MANY PANICS WHEN TESTING
 	if e.Left != nil {

quesma/model/simple_query.go

@@ -28,6 +28,10 @@ func NewSimpleQuery(whereClause Expr, canParse bool) SimpleQuery {
 	return SimpleQuery{WhereClause: whereClause, CanParse: canParse}
 }
 
+func NewSimpleQueryInvalid() SimpleQuery {
+	return SimpleQuery{CanParse: false}
+}
+
 // LimitForCount returns (limit, true) if we need count(*) with limit,
 // (not-important, false) if we don't need count/limit
 func (s *SimpleQuery) LimitForCount() (limit int, doWeNeedLimit bool) {