cherry pick pingcap#15345 to release-3.1

Signed-off-by: sre-bot <[email protected]>
sre-bot · Apr 8, 2020 · 0859077 · 0859077
1 parent a153f19
commit 0859077
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diff --git a/planner/core/logical_plan_builder.go b/planner/core/logical_plan_builder.go
@@ -3375,6 +3375,9 @@ func (b *PlanBuilder) buildWindowFunctionFrame(ctx context.Context, spec *ast.Wi
 
 func (b *PlanBuilder) checkWindowFuncArgs(ctx context.Context, p LogicalPlan, windowFuncExprs []*ast.WindowFuncExpr, windowAggMap map[*ast.AggregateFuncExpr]int) error {
 	for _, windowFuncExpr := range windowFuncExprs {
+		if strings.ToLower(windowFuncExpr.F) == ast.AggFuncGroupConcat {
+			return ErrNotSupportedYet.GenWithStackByArgs("group_concat as window function")
+		}
 		args, err := b.buildArgs4WindowFunc(ctx, p, windowFuncExpr.Args, windowAggMap)
 		if err != nil {
 			return err