diff --git a/source/libs/executor/src/executorimpl.c b/source/libs/executor/src/executorimpl.c
index 12fed5a118..f712398bd5 100644
--- a/source/libs/executor/src/executorimpl.c
+++ b/source/libs/executor/src/executorimpl.c
@@ -716,7 +716,7 @@ int32_t projectApplyFunctions(SExprInfo* pExpr, SSDataBlock* pResult, SSDataBloc
         taosArrayDestroy(pBlockList);
       }
     } else {
-      ASSERT(0);
+      return TSDB_CODE_OPS_NOT_SUPPORT;
     }
   }