remove redundant 'FoldConstant' call in function 'EvaluateExprWithNul…

…l' (pingcap#4534)
zhuomingliang · Sep 15, 2017 · 49e9b63 · 49e9b63
1 parent 117ff28
commit 49e9b63
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/expression/expression.go b/expression/expression.go
@@ -511,7 +511,7 @@ func EvaluateExprWithNull(ctx context.Context, schema *Schema, expr Expression)
 		if err != nil {
 			return nil, errors.Trace(err)
 		}
-		return FoldConstant(newFunc), nil
+		return newFunc, nil
 	case *Column:
 		if !schema.Contains(x) {
 			return x, nil