diff --git a/source/libs/executor/src/tsort.c b/source/libs/executor/src/tsort.c
index f21cad2dd62156d3acb87fdc811c747bd6b8ddad..581935514e20fb0b755ca03439f5053d14f70469 100644
--- a/source/libs/executor/src/tsort.c
+++ b/source/libs/executor/src/tsort.c
@@ -374,11 +374,6 @@ int32_t msortComparFn(const void *pLeft, const void *pRight, void *param) {
   SSDataBlock* pLeftBlock = pLeftSource->src.pBlock;
   SSDataBlock* pRightBlock = pRightSource->src.pBlock;
 
-  // first sort by block groupId
-  if (pLeftBlock->info.groupId != pRightBlock->info.groupId) {
-    return pLeftBlock->info.groupId < pRightBlock->info.groupId ? -1 : 1;
-  }
-
   for(int32_t i = 0; i < pInfo->size; ++i) {
     SBlockOrderInfo* pOrder = TARRAY_GET_ELEM(pInfo, i);
     SColumnInfoData* pLeftColInfoData = TARRAY_GET_ELEM(pLeftBlock->pDataBlock, pOrder->slotId);