diff --git a/src/client/inc/tscUtil.h b/src/client/inc/tscUtil.h
index e94d908ff4f693acd8789289942105d7961fe129..39993771495640692cda47f5479516610066a434 100644
--- a/src/client/inc/tscUtil.h
+++ b/src/client/inc/tscUtil.h
@@ -97,7 +97,7 @@ SMeterSidExtInfo* tscGetMeterSidInfo(SVnodeSidList* pSidList, int32_t idx);
  */
 bool tscIsPointInterpQuery(SQueryInfo* pQueryInfo);
 bool tscIsTWAQuery(SQueryInfo* pQueryInfo);
-bool tscProjectionQueryOnSTable(SQueryInfo *pQueryInfo, int32_t tableIndex);
+bool tscNonOrderedProjectionQueryOnSTable(SQueryInfo *pQueryInfo, int32_t tableIndex);
 bool tscProjectionQueryOnTable(SQueryInfo* pQueryInfo);
 
 bool tscIsTwoStageMergeMetricQuery(SQueryInfo* pQueryInfo, int32_t tableIndex);
diff --git a/src/client/inc/tsclient.h b/src/client/inc/tsclient.h
index 047a36485989cb2a7a41bbb20356ee8d6eceb59b..e03ef5eb1f781c5ec9524febe46afb032da61c1e 100644
--- a/src/client/inc/tsclient.h
+++ b/src/client/inc/tsclient.h
@@ -31,10 +31,13 @@ extern "C" {
 #include "tsqlfunction.h"
 #include "tutil.h"
 
-#define TSC_GET_RESPTR_BASE(res, _queryinfo, col, ord)                     \
-  ((res->data + tscFieldInfoGetOffset(_queryinfo, col) * res->numOfRows) + \
-   (1 - ord.order) * (res->numOfRows - 1) * tscFieldInfoGetField(_queryinfo, col)->bytes)
+//#define TSC_GET_RESPTR_BASE(res, _queryinfo, col, ord)                     \
+//  ((res->data + tscFieldInfoGetOffset(_queryinfo, col) * res->numOfRows) + \
+//   (1 - ord.order) * (res->numOfRows - 1) * tscFieldInfoGetField(_queryinfo, col)->bytes)
 
+#define TSC_GET_RESPTR_BASE(res, _queryinfo, col, ord)                     \
+  (res->data + tscFieldInfoGetOffset(_queryinfo, col) * res->numOfRows)
+  
 // forward declaration
 struct SSqlInfo;
 
diff --git a/src/client/src/tscFunctionImpl.c b/src/client/src/tscFunctionImpl.c
index b0deb9a0487bfa08b3a9669c5d372b1d0533ae26..b4667fa502721d256c02887f63f89e26692d2024 100644
--- a/src/client/src/tscFunctionImpl.c
+++ b/src/client/src/tscFunctionImpl.c
@@ -1466,7 +1466,9 @@ static void first_function(SQLFunctionCtx *pCtx) {
     }
 
     memcpy(pCtx->aOutputBuf, data, pCtx->inputBytes);
-    DO_UPDATE_TAG_COLUMNS(pCtx, i);
+  
+    TSKEY k = pCtx->ptsList[i];
+    DO_UPDATE_TAG_COLUMNS(pCtx, k);
 
     SResultInfo *pInfo = GET_RES_INFO(pCtx);
     pInfo->hasResult = DATA_SET_FLAG;
diff --git a/src/client/src/tscJoinProcess.c b/src/client/src/tscJoinProcess.c
index c62c05521268391692edf740ca0da03665097021..1bafb60f1a0e487aeaa7b70e1c1817111f8a631d 100644
--- a/src/client/src/tscJoinProcess.c
+++ b/src/client/src/tscJoinProcess.c
@@ -467,7 +467,7 @@ static void joinRetrieveCallback(void* param, TAOS_RES* tres, int numOfRows) {
       SQueryInfo* pParentQueryInfo = tscGetQueryInfoDetail(&pParentSql->cmd, pParentSql->cmd.clauseIndex);
       
       //todo refactor
-      if (tscProjectionQueryOnSTable(pParentQueryInfo, 0)) {
+      if (tscNonOrderedProjectionQueryOnSTable(pParentQueryInfo, 0)) {
         SMeterMetaInfo* pMeterMetaInfo = tscGetMeterMetaInfoFromQueryInfo(pQueryInfo, 0);
         assert(pQueryInfo->numOfTables == 1);
 
@@ -532,7 +532,7 @@ static void joinRetrieveCallback(void* param, TAOS_RES* tres, int numOfRows) {
       pSql->res.numOfTotal += pSql->res.numOfRows;
     }
   
-    if (tscProjectionQueryOnSTable(pQueryInfo, 0) && numOfRows == 0) {
+    if (tscNonOrderedProjectionQueryOnSTable(pQueryInfo, 0) && numOfRows == 0) {
       SMeterMetaInfo* pMeterMetaInfo = tscGetMeterMetaInfoFromQueryInfo(pQueryInfo, 0);
       assert(pQueryInfo->numOfTables == 1);
 
@@ -603,7 +603,7 @@ void tscFetchDatablockFromSubquery(SSqlObj* pSql) {
   
     SMeterMetaInfo *pMeterMetaInfo = tscGetMeterMetaInfoFromQueryInfo(pQueryInfo, 0);
   
-    if (tscProjectionQueryOnSTable(pQueryInfo, 0)) {
+    if (tscNonOrderedProjectionQueryOnSTable(pQueryInfo, 0)) {
       if (pRes->row >= pRes->numOfRows && pMeterMetaInfo->vnodeIndex < pMeterMetaInfo->pMetricMeta->numOfVnodes &&
           (!tscHasReachLimitation(pQueryInfo, pRes))) {
         numOfFetch++;
@@ -783,7 +783,7 @@ void tscJoinQueryCallback(void* param, TAOS_RES* tres, int code) {
          * if the query is a continue query (vnodeIndex > 0 for projection query) for next vnode, do the retrieval of
          * data instead of returning to its invoker
          */
-        if (pMeterMetaInfo->vnodeIndex > 0 && tscProjectionQueryOnSTable(pQueryInfo, 0)) {
+        if (pMeterMetaInfo->vnodeIndex > 0 && tscNonOrderedProjectionQueryOnSTable(pQueryInfo, 0)) {
           assert(pMeterMetaInfo->vnodeIndex < pMeterMetaInfo->pMetricMeta->numOfVnodes);
           pSupporter->pState->numOfCompleted = 0;  // reset the record value
 
diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 3d831540a9825fe3570e61700660e7125f3fa676..945c0aff2228526ad9287502e4cb0b4eea710b9d 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -4460,7 +4460,7 @@ int32_t parseLimitClause(SQueryInfo* pQueryInfo, int32_t clauseIndex, SQuerySQL*
     if (queryOnTags == true) {  // local handle the metric tag query
       pQueryInfo->command = TSDB_SQL_RETRIEVE_TAGS;
     } else {
-      if (tscProjectionQueryOnSTable(pQueryInfo, 0)) {
+      if (tscNonOrderedProjectionQueryOnSTable(pQueryInfo, 0)) {
         if (pQueryInfo->order.orderColId >= 0) {
           if (pQueryInfo->limit.limit == -1) {
             return invalidSqlErrMsg(pQueryInfo->msg, msg4);
@@ -4473,6 +4473,7 @@ int32_t parseLimitClause(SQueryInfo* pQueryInfo, int32_t clauseIndex, SQuerySQL*
         if (pQueryInfo->slimit.limit > 0 || pQueryInfo->slimit.offset > 0) {
           return invalidSqlErrMsg(pQueryInfo->msg, msg3);
         }
+        
         pQueryInfo->type |= TSDB_QUERY_TYPE_SUBQUERY; // for projection query on super table, all queries are subqueries
       }
     }
@@ -5016,7 +5017,7 @@ int32_t doFunctionsCompatibleCheck(SSqlCmd* pCmd, SQueryInfo* pQueryInfo) {
     }
 
     // projection query on metric does not compatible with "group by" syntax
-    if (tscProjectionQueryOnSTable(pQueryInfo, 0)) {
+    if (tscNonOrderedProjectionQueryOnSTable(pQueryInfo, 0)) {
       return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg3);
     }
 
diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index 972639e438b69b8352c27776a6ddb89281431123..d0fefef79bd5c5f1a7fd02e7a2dd1307e02a5694 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -257,9 +257,6 @@ void tscGetConnToVnode(SSqlObj *pSql, uint8_t *pCode) {
        * in the edge edition, ip is 0, and at this time we use masterIp instead
        * in the cluster edition, ip is vnode ip
        */
-      //(pSql->index) = (pSql->index + 1) % TSDB_VNODES_SUPPORT;
-      //continue;
-
       pVPeersDesc[pSql->index].ip = tscMgmtIpList.ip[0];
     }
     *pCode = TSDB_CODE_SUCCESS;
@@ -2484,12 +2481,12 @@ static int tscSetResultPointer(SQueryInfo *pQueryInfo, SSqlRes *pRes) {
     int16_t     offset = tscFieldInfoGetOffset(pQueryInfo, i);
 
     pRes->bytes[i] = pField->bytes;
-    if (pQueryInfo->order.order == TSQL_SO_DESC) {
-      pRes->bytes[i] = -pRes->bytes[i];
-      pRes->tsrow[i] = ((pRes->data + offset * pRes->numOfRows) + (pRes->numOfRows - 1) * pField->bytes);
-    } else {
+//    if (pQueryInfo->order.order == TSQL_SO_DESC) {
+//      pRes->bytes[i] = -pRes->bytes[i];
+//      pRes->tsrow[i] = ((pRes->data + offset * pRes->numOfRows) + (pRes->numOfRows - 1) * pField->bytes);
+//    } else {
       pRes->tsrow[i] = (pRes->data + offset * pRes->numOfRows);
-    }
+//    }
   }
 
   return 0;
@@ -3422,7 +3419,7 @@ int tscProcessRetrieveRspFromVnode(SSqlObj *pSql) {
    * If the query result is exhausted, or current query is to free resource at server side,
    * the connection will be recycled.
    */
-  if ((pRes->numOfRows == 0 && !(tscProjectionQueryOnSTable(pQueryInfo, 0) && pRes->offset > 0)) ||
+  if ((pRes->numOfRows == 0 && !(tscNonOrderedProjectionQueryOnSTable(pQueryInfo, 0) && pRes->offset > 0)) ||
       ((pQueryInfo->type & TSDB_QUERY_TYPE_FREE_RESOURCE) == TSDB_QUERY_TYPE_FREE_RESOURCE)) {
     tscTrace("%p no result or free resource, recycle connection", pSql);
     taosAddConnIntoCache(tscConnCache, pSql->thandle, pSql->ip, pSql->vnode, pObj->user);
diff --git a/src/client/src/tscSql.c b/src/client/src/tscSql.c
index f48897ab035ee8ffbd145c42b2ccd8a944fda3e6..93e09f082812ef7e91ec66a34cc37513b4098ece 100644
--- a/src/client/src/tscSql.c
+++ b/src/client/src/tscSql.c
@@ -360,8 +360,9 @@ int taos_fetch_block_impl(TAOS_RES *res, TAOS_ROW *rows) {
 
   SQueryInfo *pQueryInfo = tscGetQueryInfoDetail(pCmd, 0);
   for (int i = 0; i < pQueryInfo->fieldsInfo.numOfOutputCols; ++i) {
-    pRes->tsrow[i] = TSC_GET_RESPTR_BASE(pRes, pQueryInfo, i, pQueryInfo->order) +
-                     pRes->bytes[i] * (1 - pQueryInfo->order.order) * (pRes->numOfRows - 1);
+//    pRes->tsrow[i] = TSC_GET_RESPTR_BASE(pRes, pQueryInfo, i, pQueryInfo->order) +
+//                     pRes->bytes[i] * (1 - pQueryInfo->order.order) * (pRes->numOfRows - 1);
+    pRes->tsrow[i] = TSC_GET_RESPTR_BASE(pRes, pQueryInfo, i, pQueryInfo->order);
   }
 
   *rows = pRes->tsrow;
@@ -425,7 +426,7 @@ static bool tscHashRemainDataInSubqueryResultSet(SSqlObj *pSql) {
   SSqlCmd *pCmd = &pSql->cmd;
 
   SQueryInfo *pQueryInfo = tscGetQueryInfoDetail(pCmd, pCmd->clauseIndex);
-  if (tscProjectionQueryOnSTable(pQueryInfo, 0)) {
+  if (tscNonOrderedProjectionQueryOnSTable(pQueryInfo, 0)) {
     bool allSubqueryExhausted = true;
 
     for (int32_t i = 0; i < pSql->numOfSubs; ++i) {
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 4cf0f7e45dbfb39cb78cbad9d988e1cac5ae98ff..c54c23acdb5ed5dba3e252b3a777c7bb6758a4c3 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -215,8 +215,8 @@ bool tscIsTwoStageMergeMetricQuery(SQueryInfo* pQueryInfo, int32_t tableIndex) {
     return false;
   }
 
-  // for projection query, iterate all qualified vnodes sequentially
-  if (tscProjectionQueryOnSTable(pQueryInfo, tableIndex)) {
+  // for ordered projection query, iterate all qualified vnodes sequentially
+  if (tscNonOrderedProjectionQueryOnSTable(pQueryInfo, tableIndex)) {
     return false;
   }
 
@@ -228,12 +228,13 @@ bool tscIsTwoStageMergeMetricQuery(SQueryInfo* pQueryInfo, int32_t tableIndex) {
   return false;
 }
 
-bool tscProjectionQueryOnSTable(SQueryInfo* pQueryInfo, int32_t tableIndex) {
+bool tscNonOrderedProjectionQueryOnSTable(SQueryInfo* pQueryInfo, int32_t tableIndex) {
   SMeterMetaInfo* pMeterMetaInfo = tscGetMeterMetaInfoFromQueryInfo(pQueryInfo, tableIndex);
 
   /*
-   * In following cases, return false for project query on metric
-   * 1. failed to get metermeta from server; 2. not a metric; 3. limit 0; 4. show query, instead of a select query
+   * In following cases, return false for non ordered project query on super table
+   * 1. failed to get metermeta from server; 2. not a super table; 3. limitation is 0;
+   * 4. show queries, instead of a select query
    */
   if (pMeterMetaInfo == NULL || !UTIL_METER_IS_SUPERTABLE(pMeterMetaInfo) ||
       pQueryInfo->command == TSDB_SQL_RETRIEVE_EMPTY_RESULT || pQueryInfo->exprsInfo.numOfExprs == 0) {
@@ -244,6 +245,11 @@ bool tscProjectionQueryOnSTable(SQueryInfo* pQueryInfo, int32_t tableIndex) {
   if (tscQueryMetricTags(pQueryInfo)) {
     return false;
   }
+  
+  // order by column exists, not a non-ordered projection query
+  if (pQueryInfo->order.orderColId >= 0) {
+    return false;
+  }
 
   // for project query, only the following two function is allowed
   for (int32_t i = 0; i < pQueryInfo->fieldsInfo.numOfOutputCols; ++i) {
@@ -2070,7 +2076,7 @@ bool hasMoreVnodesToTry(SSqlObj* pSql) {
   }
   
   int32_t totalVnode = pMeterMetaInfo->pMetricMeta->numOfVnodes;
-  return pRes->numOfRows == 0 && tscProjectionQueryOnSTable(pQueryInfo, 0) &&
+  return pRes->numOfRows == 0 && tscNonOrderedProjectionQueryOnSTable(pQueryInfo, 0) &&
          (!tscHasReachLimitation(pQueryInfo, pRes)) && (pMeterMetaInfo->vnodeIndex < totalVnode - 1);
 }
 
@@ -2084,7 +2090,7 @@ void tscTryQueryNextVnode(SSqlObj* pSql, __async_cb_func_t fp) {
    * no result returned from the current virtual node anymore, try the next vnode if exists
    * if case of: multi-vnode super table projection query
    */
-  assert(pRes->numOfRows == 0 && tscProjectionQueryOnSTable(pQueryInfo, 0) && !tscHasReachLimitation(pQueryInfo, pRes));
+  assert(pRes->numOfRows == 0 && tscNonOrderedProjectionQueryOnSTable(pQueryInfo, 0) && !tscHasReachLimitation(pQueryInfo, pRes));
 
   SMeterMetaInfo* pMeterMetaInfo = tscGetMeterMetaInfoFromQueryInfo(pQueryInfo, 0);
   int32_t         totalVnode = pMeterMetaInfo->pMetricMeta->numOfVnodes;
diff --git a/src/inc/tsqlfunction.h b/src/inc/tsqlfunction.h
index 0ed6a9952ec5d8b9c3e006c092b58b6a7d644297..93f50cf4f3862e7d2747c10399858c3be0562072 100644
--- a/src/inc/tsqlfunction.h
+++ b/src/inc/tsqlfunction.h
@@ -162,8 +162,8 @@ typedef struct SExtTagsInfo {
 // sql function runtime context
 typedef struct SQLFunctionCtx {
   int32_t startOffset;
-  int32_t size;
-  int32_t order;
+  int32_t size;      // number of rows
+  int32_t order;     // asc|desc
   int32_t scanFlag;  // TODO merge with currentStage
 
   int16_t inputType;
diff --git a/src/system/detail/src/vnodeCache.c b/src/system/detail/src/vnodeCache.c
index 182717c1ab85353a71701073c0213bcf106090f8..49e5d287f947dc24c3abff8baa93fedf2fc43a60 100644
--- a/src/system/detail/src/vnodeCache.c
+++ b/src/system/detail/src/vnodeCache.c
@@ -630,7 +630,14 @@ int vnodeQueryFromCache(SMeterObj *pObj, SQuery *pQuery) {
         setNullN(pData, type, bytes, pCacheBlock->numOfPoints);
       } else {
         pRead = pCacheBlock->offset[colIdx] + startPos * bytes;
-        memcpy(pData, pRead, numOfReads * bytes);
+        
+        if (QUERY_IS_ASC_QUERY(pQuery)) {
+          memcpy(pData, pRead, numOfReads * bytes);
+        } else {
+          for(int32_t j = 0; j < numOfReads; ++j) {
+            memcpy(pData + bytes * j, pRead + (numOfReads - 1 - j) * bytes, bytes);
+          }
+        }
       }
     }
     numOfQualifiedPoints = numOfReads;
@@ -668,8 +675,7 @@ int vnodeQueryFromCache(SMeterObj *pObj, SQuery *pQuery) {
         }
 
         ids[numOfQualifiedPoints] = j;
-        if (++numOfQualifiedPoints == numOfReads) {
-          // qualified data are enough
+        if (++numOfQualifiedPoints == numOfReads) { // qualified data are enough
           break;
         }
       }
@@ -691,23 +697,22 @@ int vnodeQueryFromCache(SMeterObj *pObj, SQuery *pQuery) {
         if (!vnodeFilterData(pQuery, &numOfActualRead, j)) {
           continue;
         }
-
-        ids[numOfReads - numOfQualifiedPoints - 1] = j;
-        if (++numOfQualifiedPoints == numOfReads) {
-          // qualified data are enough
+  
+        ids[numOfQualifiedPoints] = j;
+        if (++numOfQualifiedPoints == numOfReads) { // qualified data are enough
           break;
         }
       }
     }
 
-    int32_t start = QUERY_IS_ASC_QUERY(pQuery) ? 0 : numOfReads - numOfQualifiedPoints;
+//    int32_t start = QUERY_IS_ASC_QUERY(pQuery) ? 0 : numOfReads - numOfQualifiedPoints;
     for (int32_t j = 0; j < numOfQualifiedPoints; ++j) {
       for (int32_t col = 0; col < pQuery->numOfOutputCols; ++col) {
         int16_t colIndex = pQuery->pSelectExpr[col].pBase.colInfo.colIdx;
 
         int32_t bytes = pObj->schema[colIndex].bytes;
         pData = pQuery->sdata[col]->data + (pQuery->pointsOffset + j) * bytes;
-        pRead = pCacheBlock->offset[colIndex] + ids[j + start] * bytes;
+        pRead = pCacheBlock->offset[colIndex] + ids[j/* + start*/] * bytes;
 
         memcpy(pData, pRead, bytes);
       }
diff --git a/src/system/detail/src/vnodeFile.c b/src/system/detail/src/vnodeFile.c
index caa3c259c6a0c499606d7fd2b7ae3641e9a2240d..bd1488bc53aa0538680b887bf2c4a407dd4c59d0 100644
--- a/src/system/detail/src/vnodeFile.c
+++ b/src/system/detail/src/vnodeFile.c
@@ -1640,11 +1640,15 @@ int vnodeQueryFromFile(SMeterObj *pObj, SQuery *pQuery) {
       pData = pQuery->sdata[i]->data + pQuery->pointsOffset * bytes;
       pRead = sdata[colBufferIndex]->data + startPos * bytes;
 
-      memcpy(pData, pRead, numOfReads * bytes);
+      if (QUERY_IS_ASC_QUERY(pQuery)) {
+        memcpy(pData, pRead, numOfReads * bytes);
+      } else { //reversed copy to output buffer
+        for(int32_t j = 0; j < numOfReads; ++j) {
+          memcpy(pData + bytes * j, pRead + (numOfReads - 1 - j) * bytes, bytes);
+        }
+      }
     }
-
     numOfQualifiedPoints = numOfReads;
-
   } else {
     // check each data one by one set the input column data
     for (int32_t k = 0; k < pQuery->numOfFilterCols; ++k) {
@@ -1675,8 +1679,7 @@ int vnodeQueryFromFile(SMeterObj *pObj, SQuery *pQuery) {
         }
 
         ids[numOfQualifiedPoints] = j;
-        if (++numOfQualifiedPoints == numOfReads) {
-          // qualified data are enough
+        if (++numOfQualifiedPoints == numOfReads) { // qualified data are enough
           break;
         }
       }
@@ -1698,22 +1701,21 @@ int vnodeQueryFromFile(SMeterObj *pObj, SQuery *pQuery) {
         if (!vnodeFilterData(pQuery, &numOfActualRead, j)) {
           continue;
         }
-
-        ids[numOfReads - numOfQualifiedPoints - 1] = j;
-        if (++numOfQualifiedPoints == numOfReads) {
-          // qualified data are enough
+  
+        ids[numOfQualifiedPoints] = j;
+        if (++numOfQualifiedPoints == numOfReads) { // qualified data are enough
           break;
         }
       }
     }
 
-    int32_t start = QUERY_IS_ASC_QUERY(pQuery) ? 0 : numOfReads - numOfQualifiedPoints;
+//    int32_t start = QUERY_IS_ASC_QUERY(pQuery) ? 0 : numOfReads - numOfQualifiedPoints;
     for (int32_t j = 0; j < numOfQualifiedPoints; ++j) {
       for (int32_t col = 0; col < pQuery->numOfOutputCols; ++col) {
         int16_t colIndexInBuffer = pQuery->pSelectExpr[col].pBase.colInfo.colIdxInBuf;
         int32_t bytes = GET_COLUMN_BYTES(pQuery, col);
         pData = pQuery->sdata[col]->data + (pQuery->pointsOffset + j) * bytes;
-        pRead = sdata[colIndexInBuffer]->data + ids[j + start] * bytes;
+        pRead = sdata[colIndexInBuffer]->data + ids[j/* + start*/] * bytes;
 
         memcpy(pData, pRead, bytes);
       }
diff --git a/src/system/detail/src/vnodeQueryImpl.c b/src/system/detail/src/vnodeQueryImpl.c
index 84e283288a28df1326b9cb5bcffa9eb7021bd58a..6964668f29385e9513f6d5112120dbc98f5e30bf 100644
--- a/src/system/detail/src/vnodeQueryImpl.c
+++ b/src/system/detail/src/vnodeQueryImpl.c
@@ -4461,7 +4461,7 @@ static void doHandleDataBlockImpl(SQueryRuntimeEnv *pRuntimeEnv, SBlockInfo *pbl
   SQuery *           pQuery = pRuntimeEnv->pQuery;
   SQueryCostSummary *pSummary = &pRuntimeEnv->summary;
 
-    TSKEY *primaryKeys = (TSKEY *)pRuntimeEnv->primaryColBuffer->data;
+  TSKEY *primaryKeys = (TSKEY *)pRuntimeEnv->primaryColBuffer->data;
   int64_t start = taosGetTimestampUs();
 
   if (IS_DISK_DATA_BLOCK(pQuery)) {
@@ -5297,11 +5297,11 @@ void resetCtxOutputBuf(SQueryRuntimeEnv *pRuntimeEnv) {
     SQLFunctionCtx *pCtx = &pRuntimeEnv->pCtx[i];
 
     // ts_comp query does not required reversed output
-    if (QUERY_IS_ASC_QUERY(pQuery) || isTSCompQuery(pQuery)) {
+//    if (QUERY_IS_ASC_QUERY(pQuery) || isTSCompQuery(pQuery)) {
       pCtx->aOutputBuf = pQuery->sdata[i]->data;
-    } else {  // point to the last position of output buffer for desc query
-      pCtx->aOutputBuf = pQuery->sdata[i]->data + (rows - 1) * pCtx->outputBytes;
-    }
+//    } else {  // point to the last position of output buffer for desc query
+//      pCtx->aOutputBuf = pQuery->sdata[i]->data + (rows - 1) * pCtx->outputBytes;
+//    }
 
     /*
      * set the output buffer information and intermediate buffer
@@ -5333,7 +5333,7 @@ void forwardCtxOutputBuf(SQueryRuntimeEnv *pRuntimeEnv, int64_t output) {
 
     // set next output position
     if (IS_OUTER_FORWARD(aAggs[functionId].nStatus)) {
-      pRuntimeEnv->pCtx[j].aOutputBuf += pRuntimeEnv->pCtx[j].outputBytes * output * factor;
+      pRuntimeEnv->pCtx[j].aOutputBuf += pRuntimeEnv->pCtx[j].outputBytes * output /** factor*/;
     }
 
     if (functionId == TSDB_FUNC_TOP || functionId == TSDB_FUNC_BOTTOM) {
@@ -5415,20 +5415,20 @@ void doSkipResults(SQueryRuntimeEnv *pRuntimeEnv) {
  * @param pRuntimeEnv
  */
 void moveDescOrderResultsToFront(SQueryRuntimeEnv *pRuntimeEnv) {
-  SQuery *pQuery = pRuntimeEnv->pQuery;
-  int32_t maxrows = pQuery->pointsToRead;
-
-  if (QUERY_IS_ASC_QUERY(pQuery) || isTSCompQuery(pQuery)) {
-    return;
-  }
-
-  if (pQuery->pointsRead > 0 && pQuery->pointsRead < maxrows) {
-    for (int32_t i = 0; i < pQuery->numOfOutputCols; ++i) {
-      int32_t bytes = pRuntimeEnv->pCtx[i].outputBytes;
-      memmove(pQuery->sdata[i]->data, pQuery->sdata[i]->data + (maxrows - pQuery->pointsRead) * bytes,
-              pQuery->pointsRead * bytes);
-    }
-  }
+//  SQuery *pQuery = pRuntimeEnv->pQuery;
+//  int32_t maxrows = pQuery->pointsToRead;
+//
+//  if (QUERY_IS_ASC_QUERY(pQuery) || isTSCompQuery(pQuery)) {
+//    return;
+//  }
+//
+//  if (pQuery->pointsRead > 0 && pQuery->pointsRead < maxrows) {
+//    for (int32_t i = 0; i < pQuery->numOfOutputCols; ++i) {
+//      int32_t bytes = pRuntimeEnv->pCtx[i].outputBytes;
+//      memmove(pQuery->sdata[i]->data, pQuery->sdata[i]->data + (maxrows - pQuery->pointsRead) * bytes,
+//              pQuery->pointsRead * bytes);
+//    }
+//  }
 }
 
 typedef struct SQueryStatus {
diff --git a/src/system/detail/src/vnodeQueryProcess.c b/src/system/detail/src/vnodeQueryProcess.c
index 76a358cfc2eb2efad2eaf5646b9989dac2466bd7..881543aa93e79c0d506fb2556ecf3eb30c7586ec 100644
--- a/src/system/detail/src/vnodeQueryProcess.c
+++ b/src/system/detail/src/vnodeQueryProcess.c
@@ -1162,7 +1162,7 @@ static void vnodeSingleMeterIntervalProcessor(SQInfo *pQInfo) {
   pQInfo->pointsRead += pQuery->pointsRead;
   pQInfo->pointsInterpo += numOfInterpo;
 
-  moveDescOrderResultsToFront(pRuntimeEnv);
+//  moveDescOrderResultsToFront(pRuntimeEnv);
 
   dTrace("%p vid:%d sid:%d id:%s, %d points returned %d points interpo, totalRead:%d totalInterpo:%d totalReturn:%d",
          pQInfo, pMeterObj->vnode, pMeterObj->sid, pMeterObj->meterId, pQuery->pointsRead, numOfInterpo,
diff --git a/src/util/src/textbuffer.c b/src/util/src/textbuffer.c
index 5c4ab1e74da59f5ec27b00fa729f7efde71b4dd4..e1c571f4c28a3b40ba7f7d2cdd33be5e4d965946 100644
--- a/src/util/src/textbuffer.c
+++ b/src/util/src/textbuffer.c
@@ -1603,7 +1603,7 @@ void tColModelAppend(tColModel *dstModel, tFilePage *dstPage, void *srcData, int
 
 tOrderDescriptor *tOrderDesCreate(int32_t *orderColIdx, int32_t numOfOrderCols, tColModel *pModel,
                                   int32_t tsOrderType) {
-  tOrderDescriptor *desc = (tOrderDescriptor *)malloc(sizeof(tOrderDescriptor) + sizeof(int32_t) * numOfOrderCols);
+  tOrderDescriptor *desc = (tOrderDescriptor *)calloc(1, sizeof(tOrderDescriptor) + sizeof(int32_t) * numOfOrderCols);
   if (desc == NULL) {
     return NULL;
   }