diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index d2d97f7b90c0a54b7f47586d13677e4c83e15f4e..15682a2cfe68768526bfce06edd50f0abbe86ce9 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -750,8 +750,8 @@ static bool isPrimaryKeyImpl(SNode* pExpr) {
     return (PRIMARYKEY_TIMESTAMP_COL_ID == ((SColumnNode*)pExpr)->colId);
   } else if (QUERY_NODE_FUNCTION == nodeType(pExpr)) {
     SFunctionNode* pFunc = (SFunctionNode*)pExpr;
-    if (FUNCTION_TYPE_SELECT_VALUE == pFunc->funcType || FUNCTION_TYPE_FIRST == pFunc->funcType ||
-        FUNCTION_TYPE_LAST == pFunc->funcType) {
+    if (FUNCTION_TYPE_SELECT_VALUE == pFunc->funcType || FUNCTION_TYPE_GROUP_KEY == pFunc->funcType ||
+        FUNCTION_TYPE_FIRST == pFunc->funcType || FUNCTION_TYPE_LAST == pFunc->funcType) {
       return isPrimaryKeyImpl(nodesListGetNode(pFunc->pParameterList, 0));
     } else if (FUNCTION_TYPE_WSTART == pFunc->funcType || FUNCTION_TYPE_WEND == pFunc->funcType) {
       return true;