diff --git a/source/libs/scalar/src/scalar.c b/source/libs/scalar/src/scalar.c
index bbb7e07bad..484d95cb5a 100644
--- a/source/libs/scalar/src/scalar.c
+++ b/source/libs/scalar/src/scalar.c
@@ -700,7 +700,7 @@ EDealRes sclRewriteNonConstOperator(SNode** pNode, SScalarCtx *ctx) {
 EDealRes sclRewriteFunction(SNode** pNode, SScalarCtx *ctx) {
   SFunctionNode *node = (SFunctionNode *)*pNode;
   SNode* tnode = NULL;
-  if (!fmIsScalarFunc(node->funcId)) {
+  if (!fmIsScalarFunc(node->funcId) && (!ctx->dual)) {
     return DEAL_RES_CONTINUE;
   }