diff --git a/source/libs/executor/inc/executil.h b/source/libs/executor/inc/executil.h
index edc21626f5..63c398618f 100644
--- a/source/libs/executor/inc/executil.h
+++ b/source/libs/executor/inc/executil.h
@@ -42,11 +42,8 @@
 #define GET_TASKID(_t)  (((SExecTaskInfo*)(_t))->id.str)
 
 typedef struct SGroupResInfo {
-  int32_t totalGroup;
-  int32_t currentGroup;
   int32_t index;
-  SArray* pRows;      // SArray<SResultRowPosition*>
-  bool    ordered;
+  SArray* pRows;      // SArray<SResKeyPos>
   int32_t position;
 } SGroupResInfo;
 
@@ -80,18 +77,12 @@ typedef struct SResultRowInfo {
   SResultRowPosition cur;
 } SResultRowInfo;
 
-struct STaskAttr;
-struct STaskRuntimeEnv;
-struct SUdfInfo;
 struct SqlFunctionCtx;
 
-int32_t getOutputInterResultBufSize(struct STaskAttr* pQueryAttr);
-
 size_t getResultRowSize(struct SqlFunctionCtx* pCtx, int32_t numOfOutput);
 int32_t initResultRowInfo(SResultRowInfo* pResultRowInfo, int32_t size);
 void    cleanupResultRowInfo(SResultRowInfo* pResultRowInfo);
 
-void    resetResultRowInfo(struct STaskRuntimeEnv* pRuntimeEnv, SResultRowInfo* pResultRowInfo);
 int32_t numOfClosedResultRows(SResultRowInfo* pResultRowInfo);
 void    closeAllResultRows(SResultRowInfo* pResultRowInfo);
 
@@ -99,9 +90,7 @@ void    initResultRow(SResultRow *pResultRow);
 void    closeResultRow(SResultRow* pResultRow);
 bool    isResultRowClosed(SResultRow* pResultRow);
 
-struct SResultRowEntryInfo* getResultCell(const SResultRow* pRow, int32_t index, int32_t* offset);
-
-int32_t getRowNumForMultioutput(struct STaskAttr* pQueryAttr, bool topBottomQuery, bool stable);
+struct SResultRowEntryInfo* getResultCell(const SResultRow* pRow, int32_t index, const int32_t* offset);
 
 static FORCE_INLINE SResultRow *getResultRow(SDiskbasedBuf* pBuf, SResultRowInfo *pResultRowInfo, int32_t slot) {
   ASSERT(pResultRowInfo != NULL && slot >= 0 && slot < pResultRowInfo->size);
@@ -118,39 +107,13 @@ static FORCE_INLINE SResultRow *getResultRowByPos(SDiskbasedBuf* pBuf, SResultRo
   return pRow;
 }
 
-static FORCE_INLINE char* getPosInResultPage(struct STaskAttr* pQueryAttr, SFilePage* page, int32_t rowOffset,
-                                             int32_t offset) {
-  assert(rowOffset >= 0 && pQueryAttr != NULL);
-
-  // int32_t numOfRows = (int32_t)getRowNumForMultioutput(pQueryAttr, pQueryAttr->topBotQuery, pQueryAttr->stableQuery);
-  return ((char *)page->data);  
-
-}
-
-static FORCE_INLINE char* getPosInResultPage_rv(SFilePage* page, int32_t rowOffset, int32_t offset) {
-  assert(rowOffset >= 0);
-
-  int32_t numOfRows = 1;//(int32_t)getRowNumForMultioutput(pQueryAttr, pQueryAttr->topBotQuery, pQueryAttr->stableQuery);
-  return (char*) page + rowOffset + offset * numOfRows;
-}
-
-typedef struct {
-  SArray* pResult;     // SArray<SResPair>
-  int32_t colId;
-} SStddevInterResult;
-
 void    initGroupedResultInfo(SGroupResInfo* pGroupResInfo, SHashObj* pHashmap, int32_t order);
 void    initMultiResInfoFromArrayList(SGroupResInfo* pGroupResInfo, SArray* pArrayList);
 
 void    cleanupGroupResInfo(SGroupResInfo* pGroupResInfo);
-bool    hasRemainDataInCurrentGroup(SGroupResInfo* pGroupResInfo);
-bool    hasRemainData(SGroupResInfo* pGroupResInfo);
+bool    hashRemainDataInGroupInfo(SGroupResInfo* pGroupResInfo);
 
 bool    incNextGroup(SGroupResInfo* pGroupResInfo);
 int32_t getNumOfTotalRes(SGroupResInfo* pGroupResInfo);
 
-int32_t mergeIntoGroupResult(SGroupResInfo* pGroupResInfo, struct STaskRuntimeEnv *pRuntimeEnv, int32_t* offset);
-
-//int32_t initUdfInfo(struct SUdfInfo* pUdfInfo);
-
 #endif  // TDENGINE_QUERYUTIL_H
diff --git a/source/libs/executor/inc/executorimpl.h b/source/libs/executor/inc/executorimpl.h
index 78f3266d74..0dacbba8e5 100644
--- a/source/libs/executor/inc/executorimpl.h
+++ b/source/libs/executor/inc/executorimpl.h
@@ -666,7 +666,6 @@ int32_t initAggInfo(SOptrBasicInfo* pBasicInfo, SAggSupporter* pAggSup, SExprInf
 void    initResultSizeInfo(SOperatorInfo* pOperator, int32_t numOfRows);
 void    doBuildResultDatablock(SOperatorInfo* pOperator, SOptrBasicInfo* pbInfo, SGroupResInfo* pGroupResInfo, SDiskbasedBuf* pBuf);
 
-void    finalizeMultiTupleQueryResult(int32_t numOfOutput, SDiskbasedBuf* pBuf, SResultRowInfo* pResultRowInfo, int32_t* rowCellInfoOffset);
 void    doApplyFunctions(SExecTaskInfo* taskInfo, SqlFunctionCtx* pCtx, STimeWindow* pWin, SColumnInfoData* pTimeWindowData, int32_t offset,
                          int32_t forwardStep, TSKEY* tsCol, int32_t numOfTotal, int32_t numOfOutput, int32_t order);
 int32_t setGroupResultOutputBuf(SOptrBasicInfo* binfo, int32_t numOfCols, char* pData, int16_t type, int16_t bytes,
diff --git a/source/libs/executor/src/executil.c b/source/libs/executor/src/executil.c
index 14cff488ec..5a02547f58 100644
--- a/source/libs/executor/src/executil.c
+++ b/source/libs/executor/src/executil.c
@@ -114,12 +114,6 @@ void closeAllResultRows(SResultRowInfo *pResultRowInfo) {
   assert(pResultRowInfo->size >= 0 && pResultRowInfo->capacity >= pResultRowInfo->size);
   
   for (int32_t i = 0; i < pResultRowInfo->size; ++i) {
-//    SResultRow* pRow = pResultRowInfo->pResult[i];
-//    if (pRow->closed) {
-//      continue;
-//    }
-    
-//    pRow->closed = true;
   }
 }
 
@@ -144,11 +138,11 @@ void clearResultRow(STaskRuntimeEnv *pRuntimeEnv, SResultRow *pResultRow) {
     for (int32_t i = 0; i < pRuntimeEnv->pQueryAttr->numOfOutput; ++i) {
       struct SResultRowEntryInfo *pEntryInfo = NULL;//pResultRow->pEntryInfo[i];
 
-      int16_t size = pRuntimeEnv->pQueryAttr->pExpr1[i].base.resSchema.bytes;
-      char * s = getPosInResultPage(pRuntimeEnv->pQueryAttr, page, pResultRow->offset, offset);
-      memset(s, 0, size);
+//      int16_t size = pRuntimeEnv->pQueryAttr->pExpr1[i].base.resSchema.bytes;
+//      char * s = getPosInResultPage(pRuntimeEnv->pQueryAttr, page, pResultRow->offset, offset);
+//      memset(s, 0, size);
 
-      offset += size;
+//      offset += size;
       cleanupResultRowEntry(pEntryInfo);
     }
   }
@@ -161,7 +155,7 @@ void clearResultRow(STaskRuntimeEnv *pRuntimeEnv, SResultRow *pResultRow) {
 }
 
 // TODO refactor: use macro
-SResultRowEntryInfo* getResultCell(const SResultRow* pRow, int32_t index, int32_t* offset) {
+SResultRowEntryInfo* getResultCell(const SResultRow* pRow, int32_t index, const int32_t* offset) {
   assert(index >= 0 && offset != NULL);
   return (SResultRowEntryInfo*)((char*) pRow->pEntryInfo + offset[index]);
 }
@@ -247,7 +241,7 @@ void initMultiResInfoFromArrayList(SGroupResInfo* pGroupResInfo, SArray* pArrayL
   ASSERT(pGroupResInfo->index <= getNumOfTotalRes(pGroupResInfo));
 }
 
-bool hasRemainDataInCurrentGroup(SGroupResInfo* pGroupResInfo) {
+bool hashRemainDataInGroupInfo(SGroupResInfo* pGroupResInfo) {
   if (pGroupResInfo->pRows == NULL) {
     return false;
   }
@@ -255,18 +249,6 @@ bool hasRemainDataInCurrentGroup(SGroupResInfo* pGroupResInfo) {
   return pGroupResInfo->index < taosArrayGetSize(pGroupResInfo->pRows);
 }
 
-bool hasRemainData(SGroupResInfo* pGroupResInfo) {
-  if (hasRemainDataInCurrentGroup(pGroupResInfo)) {
-    return true;
-  }
-
-  return pGroupResInfo->currentGroup < pGroupResInfo->totalGroup;
-}
-
-bool incNextGroup(SGroupResInfo* pGroupResInfo) {
-  return (++pGroupResInfo->currentGroup) < pGroupResInfo->totalGroup;
-}
-
 int32_t getNumOfTotalRes(SGroupResInfo* pGroupResInfo) {
   assert(pGroupResInfo != NULL);
   if (pGroupResInfo->pRows == 0) {
@@ -387,11 +369,6 @@ void orderTheResultRows(STaskRuntimeEnv* pRuntimeEnv) {
 }
 
 static int32_t mergeIntoGroupResultImplRv(STaskRuntimeEnv *pRuntimeEnv, SGroupResInfo* pGroupResInfo, uint64_t groupId, int32_t* rowCellInfoOffset) {
-  if (!pGroupResInfo->ordered) {
-    orderTheResultRows(pRuntimeEnv);
-    pGroupResInfo->ordered = true;
-  }
-
   if (pGroupResInfo->pRows == NULL) {
     pGroupResInfo->pRows = taosArrayInit(100, POINTER_BYTES);
   }
@@ -403,6 +380,7 @@ static int32_t mergeIntoGroupResultImplRv(STaskRuntimeEnv *pRuntimeEnv, SGroupRe
       break;
     }
 
+
     int64_t num = getNumOfResultWindowRes(pRuntimeEnv, &pResultRowCell->pos, rowCellInfoOffset);
     if (num <= 0) {
       continue;
diff --git a/source/libs/executor/src/timewindowoperator.c b/source/libs/executor/src/timewindowoperator.c
index 3be131e550..c3a447c802 100644
--- a/source/libs/executor/src/timewindowoperator.c
+++ b/source/libs/executor/src/timewindowoperator.c
@@ -815,9 +815,6 @@ static int32_t doOpenIntervalAgg(SOperatorInfo* pOperator) {
   }
 
   closeAllResultRows(&pInfo->binfo.resultRowInfo);
-  finalizeMultiTupleQueryResult(pOperator->numOfExprs, pInfo->aggSup.pResultBuf, &pInfo->binfo.resultRowInfo,
-                                pInfo->binfo.rowCellInfoOffset);
-
   initGroupedResultInfo(&pInfo->groupResInfo, pInfo->aggSup.pResultRowHashTable, pInfo->order);
   OPTR_SET_OPENED(pOperator);
   return TSDB_CODE_SUCCESS;
@@ -933,7 +930,7 @@ static SSDataBlock* doStateWindowAgg(SOperatorInfo* pOperator) {
 
   if (pOperator->status == OP_RES_TO_RETURN) {
     doBuildResultDatablock(pOperator, pBInfo, &pInfo->groupResInfo, pInfo->aggSup.pResultBuf);
-    if (pBInfo->pRes->info.rows == 0 || !hasRemainDataInCurrentGroup(&pInfo->groupResInfo)) {
+    if (pBInfo->pRes->info.rows == 0 || !hashRemainDataInGroupInfo(&pInfo->groupResInfo)) {
       doSetOperatorCompleted(pOperator);
       return NULL;
     }
@@ -960,13 +957,11 @@ static SSDataBlock* doStateWindowAgg(SOperatorInfo* pOperator) {
 
   pOperator->status = OP_RES_TO_RETURN;
   closeAllResultRows(&pBInfo->resultRowInfo);
-  finalizeMultiTupleQueryResult(pOperator->numOfExprs, pInfo->aggSup.pResultBuf, &pBInfo->resultRowInfo,
-                                pBInfo->rowCellInfoOffset);
 
   initGroupedResultInfo(&pInfo->groupResInfo, pInfo->aggSup.pResultRowHashTable, TSDB_ORDER_ASC);
   blockDataEnsureCapacity(pBInfo->pRes, pOperator->resultInfo.capacity);
   doBuildResultDatablock(pOperator, pBInfo, &pInfo->groupResInfo, pInfo->aggSup.pResultBuf);
-  if (pBInfo->pRes->info.rows == 0 || !hasRemainDataInCurrentGroup(&pInfo->groupResInfo)) {
+  if (pBInfo->pRes->info.rows == 0 || !hashRemainDataInGroupInfo(&pInfo->groupResInfo)) {
     doSetOperatorCompleted(pOperator);
   }
 
@@ -994,7 +989,7 @@ static SSDataBlock* doBuildIntervalResult(SOperatorInfo* pOperator) {
     blockDataEnsureCapacity(pBlock, pOperator->resultInfo.capacity);
     doBuildResultDatablock(pOperator, &pInfo->binfo, &pInfo->groupResInfo, pInfo->aggSup.pResultBuf);
 
-    if (pBlock->info.rows == 0 || !hasRemainDataInCurrentGroup(&pInfo->groupResInfo)) {
+    if (pBlock->info.rows == 0 || !hashRemainDataInGroupInfo(&pInfo->groupResInfo)) {
       doSetOperatorCompleted(pOperator);
     }
 
@@ -1082,7 +1077,7 @@ static SSDataBlock* doStreamIntervalAgg(SOperatorInfo* pOperator) {
 
   if (pOperator->status == OP_RES_TO_RETURN) {
     doBuildResultDatablock(pOperator, &pInfo->binfo, &pInfo->groupResInfo, pInfo->aggSup.pResultBuf);
-    if (pInfo->binfo.pRes->info.rows == 0 || !hasRemainDataInCurrentGroup(&pInfo->groupResInfo)) {
+    if (pInfo->binfo.pRes->info.rows == 0 || !hashRemainDataInGroupInfo(&pInfo->groupResInfo)) {
       pOperator->status = OP_EXEC_DONE;
     }
     return pInfo->binfo.pRes->info.rows == 0 ? NULL : pInfo->binfo.pRes;
@@ -1413,7 +1408,7 @@ static SSDataBlock* doSessionWindowAgg(SOperatorInfo* pOperator) {
 
   if (pOperator->status == OP_RES_TO_RETURN) {
     doBuildResultDatablock(pOperator, pBInfo, &pInfo->groupResInfo, pInfo->aggSup.pResultBuf);
-    if (pBInfo->pRes->info.rows == 0 || !hasRemainDataInCurrentGroup(&pInfo->groupResInfo)) {
+    if (pBInfo->pRes->info.rows == 0 || !hashRemainDataInGroupInfo(&pInfo->groupResInfo)) {
       doSetOperatorCompleted(pOperator);
       return NULL;
     }
@@ -1440,13 +1435,11 @@ static SSDataBlock* doSessionWindowAgg(SOperatorInfo* pOperator) {
   // restore the value
   pOperator->status = OP_RES_TO_RETURN;
   closeAllResultRows(&pBInfo->resultRowInfo);
-  finalizeMultiTupleQueryResult(pOperator->numOfExprs, pInfo->aggSup.pResultBuf, &pBInfo->resultRowInfo,
-                                pBInfo->rowCellInfoOffset);
 
   initGroupedResultInfo(&pInfo->groupResInfo, pInfo->aggSup.pResultRowHashTable, TSDB_ORDER_ASC);
   blockDataEnsureCapacity(pBInfo->pRes, pOperator->resultInfo.capacity);
   doBuildResultDatablock(pOperator, pBInfo, &pInfo->groupResInfo, pInfo->aggSup.pResultBuf);
-  if (pBInfo->pRes->info.rows == 0 || !hasRemainDataInCurrentGroup(&pInfo->groupResInfo)) {
+  if (pBInfo->pRes->info.rows == 0 || !hashRemainDataInGroupInfo(&pInfo->groupResInfo)) {
     doSetOperatorCompleted(pOperator);
   }
 
@@ -1461,7 +1454,7 @@ static SSDataBlock* doAllIntervalAgg(SOperatorInfo* pOperator) {
   STimeSliceOperatorInfo* pSliceInfo = pOperator->info;
   if (pOperator->status == OP_RES_TO_RETURN) {
     //    doBuildResultDatablock(&pRuntimeEnv->groupResInfo, pRuntimeEnv, pIntervalInfo->pRes);
-    if (pSliceInfo->binfo.pRes->info.rows == 0 || !hasRemainDataInCurrentGroup(&pSliceInfo->groupResInfo)) {
+    if (pSliceInfo->binfo.pRes->info.rows == 0 || !hashRemainDataInGroupInfo(&pSliceInfo->groupResInfo)) {
       doSetOperatorCompleted(pOperator);
     }
 
@@ -1493,7 +1486,7 @@ static SSDataBlock* doAllIntervalAgg(SOperatorInfo* pOperator) {
   //  initGroupedResultInfo(&pSliceInfo->groupResInfo, &pSliceInfo->binfo.resultRowInfo);
   //  doBuildResultDatablock(&pRuntimeEnv->groupResInfo, pRuntimeEnv, pSliceInfo->pRes);
 
-  if (pSliceInfo->binfo.pRes->info.rows == 0 || !hasRemainDataInCurrentGroup(&pSliceInfo->groupResInfo)) {
+  if (pSliceInfo->binfo.pRes->info.rows == 0 || !hashRemainDataInGroupInfo(&pSliceInfo->groupResInfo)) {
     pOperator->status = OP_EXEC_DONE;
   }
 
@@ -1695,7 +1688,7 @@ static SSDataBlock* doStreamFinalIntervalAgg(SOperatorInfo* pOperator) {
     return NULL;
   } else if (pOperator->status == OP_RES_TO_RETURN) {
     doBuildResultDatablock(pOperator, &pInfo->binfo, &pInfo->groupResInfo, pInfo->aggSup.pResultBuf);
-    if (pInfo->binfo.pRes->info.rows == 0 || !hasRemainDataInCurrentGroup(&pInfo->groupResInfo)) {
+    if (pInfo->binfo.pRes->info.rows == 0 || !hashRemainDataInGroupInfo(&pInfo->groupResInfo)) {
       pOperator->status = OP_EXEC_DONE;
     }
     return pInfo->binfo.pRes->info.rows == 0 ? NULL : pInfo->binfo.pRes;
diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index 020df6cc3d..ad92d095d5 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -543,7 +543,7 @@ bool getSumFuncEnv(SFunctionNode* UNUSED_PARAM(pFunc), SFuncExecEnv* pEnv) {
 }
 
 bool getAvgFuncEnv(SFunctionNode* UNUSED_PARAM(pFunc), SFuncExecEnv* pEnv) {
-  pEnv->calcMemSize = sizeof(double);
+  pEnv->calcMemSize = sizeof(SAvgRes);
   return true;
 }
 
diff --git a/source/util/src/tpagedbuf.c b/source/util/src/tpagedbuf.c
index 1ad12ef43a..00f1233707 100644
--- a/source/util/src/tpagedbuf.c
+++ b/source/util/src/tpagedbuf.c
@@ -187,9 +187,6 @@ static char* doFlushPageToDisk(SDiskbasedBuf* pBuf, SPageInfo* pg) {
     }
   } else {  // NOTE: the size may be -1, the this recycle page has not been flushed to disk yet.
     size = pg->length;
-    if (size == -1) {
-      printf("----\n");
-    }
   }
 
   ASSERT(size > 0 || (pg->offset == -1 && pg->length == -1));