diff --git a/src/gausskernel/optimizer/rewrite/rewriteManip.cpp b/src/gausskernel/optimizer/rewrite/rewriteManip.cpp
index 0036cea00..f80ee51d2 100644
--- a/src/gausskernel/optimizer/rewrite/rewriteManip.cpp
+++ b/src/gausskernel/optimizer/rewrite/rewriteManip.cpp
@@ -85,7 +85,7 @@ static bool contain_aggs_of_level_walker(Node* node, contain_aggs_of_level_conte
             return true; /* 中止树遍历并返回true */
                          /* 否则就通过检验论证 */
     }
-    if (IsA(node, GroupingFunc)) {//节点为循环函数
+    if (IsA(node, GroupingFunc)) {//节点为GroupingFunc
         if (((GroupingFunc*)node)->agglevelsup == (Index)context->sublevels_up)
             return true;
         /* 否则就通过检验论证 */
@@ -121,12 +121,12 @@ static bool contain_aggs_of_level_or_above_walker(Node* node, int* sublevels_up)
     if (node == NULL)//为空
         return false;
     if (IsA(node, Aggref)) {//节点为Aggref节点
-        if (((Aggref*)node)->agglevelsup >= (Index)*sublevels_up) {//级别相等
+        if (((Aggref*)node)->agglevelsup >= (Index)*sublevels_up) {//级别相等或大于
             return true;
         }
     }
-    if (IsA(node, GroupingFunc)) {//节点为循环函数
-        if (((GroupingFunc*)node)->agglevelsup >= (Index)*sublevels_up) {//级别相等
+    if (IsA(node, GroupingFunc)) {//节点为GroupingFunc
+        if (((GroupingFunc*)node)->agglevelsup >= (Index)*sublevels_up) {//级别相等或大于
             return true;
         }
         /* 否则就通过检验论证 */