planner: support the view hint

executor/infoschema_reader.go

@@ -688,7 +688,7 @@ func (e *hugeMemTableRetriever) dataForColumnsInTable(ctx context.Context, sctx
 			if err := runWithSystemSession(sctx, func(s sessionctx.Context) error {
 				planBuilder, _ := plannercore.NewPlanBuilder().Init(s, is, &hint.BlockHintProcessor{})
 				var err error
-				viewLogicalPlan, err = planBuilder.BuildDataSourceFromView(ctx, schema.Name, tbl)
+				viewLogicalPlan, err = planBuilder.BuildDataSourceFromView(ctx, schema.Name, tbl, nil, nil)
 				return errors.Trace(err)
 			}); err != nil {
 				sctx.GetSessionVars().StmtCtx.AppendWarning(err)

executor/show.go

@@ -1904,7 +1904,7 @@ func tryFillViewColumnType(ctx context.Context, sctx sessionctx.Context, is info
 	return runWithSystemSession(sctx, func(s sessionctx.Context) error {
 		// Retrieve view columns info.
 		planBuilder, _ := plannercore.NewPlanBuilder().Init(s, is, &hint.BlockHintProcessor{})
-		if viewLogicalPlan, err := planBuilder.BuildDataSourceFromView(ctx, dbName, tbl); err == nil {
+		if viewLogicalPlan, err := planBuilder.BuildDataSourceFromView(ctx, dbName, tbl, nil, nil); err == nil {
 			viewSchema := viewLogicalPlan.Schema()
 			viewOutputNames := viewLogicalPlan.OutputNames()
 			for _, col := range tbl.Columns {

parser/ast/misc.go

@@ -1808,9 +1808,10 @@ type StatisticsSpec struct {
 
 // CreateStatisticsStmt is a statement to create extended statistics.
 // Examples:
-//   CREATE STATISTICS stats1 (cardinality) ON t(a, b, c);
-//   CREATE STATISTICS stats2 (dependency) ON t(a, b);
-//   CREATE STATISTICS stats3 (correlation) ON t(a, b);
+//
+//	CREATE STATISTICS stats1 (cardinality) ON t(a, b, c);
+//	CREATE STATISTICS stats2 (dependency) ON t(a, b);
+//	CREATE STATISTICS stats3 (correlation) ON t(a, b);
 type CreateStatisticsStmt struct {
 	stmtNode
 
@@ -1878,7 +1879,8 @@ func (n *CreateStatisticsStmt) Accept(v Visitor) (Node, bool) {
 
 // DropStatisticsStmt is a statement to drop extended statistics.
 // Examples:
-//   DROP STATISTICS stats1;
+//
+//	DROP STATISTICS stats1;
 type DropStatisticsStmt struct {
 	stmtNode
 
@@ -2009,6 +2011,7 @@ const (
 )
 
 // ShowSlow is used for the following command:
+//
 //	admin show slow top [ internal | all] N
 //	admin show slow recent N
 type ShowSlow struct {
@@ -3464,9 +3467,13 @@ func (n *TableOptimizerHint) Restore(ctx *format.RestoreCtx) error {
 		}
 		ctx.WriteName(n.QBName.String())
 	}
+	if n.HintName.L == "qb_name" && len(n.Tables) == 0 {
+		ctx.WritePlain(")")
+		return nil
+	}
 	// Hints without args except query block.
 	switch n.HintName.L {
-	case "hash_agg", "stream_agg", "agg_to_cop", "read_consistent_replica", "no_index_merge", "qb_name", "ignore_plan_cache", "limit_to_cop", "straight_join":
+	case "hash_agg", "stream_agg", "agg_to_cop", "read_consistent_replica", "no_index_merge", "ignore_plan_cache", "limit_to_cop", "straight_join":
 		ctx.WritePlain(")")
 		return nil
 	}
@@ -3495,6 +3502,16 @@ func (n *TableOptimizerHint) Restore(ctx *format.RestoreCtx) error {
 			}
 			ctx.WriteName(index.String())
 		}
+	case "qb_name":
+		if len(n.Tables) > 0 {
+			ctx.WritePlain(", ")
+			for i, table := range n.Tables {
+				if i != 0 {
+					ctx.WritePlain(". ")
+				}
+				table.Restore(ctx)
+			}
+		}
 	case "use_toja", "use_cascades":
 		if n.HintData.(bool) {
 			ctx.WritePlain("TRUE")