Sql Expressions: (Chore) Dedicated logger for expr.sql, and pass context (#109549)

pkg/expr/reader.go

@@ -1,6 +1,7 @@
 package expr
 
 import (
+	"context"
 	"fmt"
 	"strings"
 
@@ -44,6 +45,7 @@ func NewExpressionQueryReader(features featuremgmt.FeatureToggles) *ExpressionQu
 
 // nolint:gocyclo
 func (h *ExpressionQueryReader) ReadQuery(
+	ctx context.Context,
 	// Properties that have been parsed off the same node
 	common data.DataQuery,
 	// An iterator with context for the full node (include common values)
@@ -135,7 +137,7 @@ func (h *ExpressionQueryReader) ReadQuery(
 			eq.Properties = q
 			// TODO: Cascade limit from Grafana config in this (new Expression Parser) branch of the code
 			cellLimit := 0 // zero means no limit
-			eq.Command, err = NewSQLCommand(common.RefID, q.Format, q.Expression, int64(cellLimit), 0, 0)
+			eq.Command, err = NewSQLCommand(ctx, common.RefID, q.Format, q.Expression, int64(cellLimit), 0, 0)
 		}
 
 	case QueryTypeThreshold: