diff --git a/src/tsdb/src/tsdbRead.c b/src/tsdb/src/tsdbRead.c
index d59ede920fed27659fc2aa6d3bceb662ee2b5956..c7429b5fe8db96cdaa2ec2486ab0fbb83f7f8b31 100644
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
@@ -1234,7 +1234,6 @@ static int32_t doCopyRowsFromFileBlock(STsdbQueryHandle* pQueryHandle, int32_t c
 static void moveDataToFront(STsdbQueryHandle* pQueryHandle, int32_t numOfRows, int32_t numOfCols);
 static void doCheckGeneratedBlockRange(STsdbQueryHandle* pQueryHandle);
 static void copyAllRemainRowsFromFileBlock(STsdbQueryHandle* pQueryHandle, STableCheckInfo* pCheckInfo, SDataBlockInfo* pBlockInfo, int32_t endPos);
-static TSKEY extractFirstTraverseKey(STableCheckInfo* pCheckInfo, int32_t order, int32_t update);
 
 static int32_t handleDataMergeIfNeeded(STsdbQueryHandle* pQueryHandle, SBlock* pBlock, STableCheckInfo* pCheckInfo){
   SQueryFilePos* cur = &pQueryHandle->cur;
@@ -1244,7 +1243,6 @@ static int32_t handleDataMergeIfNeeded(STsdbQueryHandle* pQueryHandle, SBlock* p
   int32_t code = TSDB_CODE_SUCCESS;
 
   /*bool hasData = */ initTableMemIterator(pQueryHandle, pCheckInfo);
-
   assert(cur->pos >= 0 && cur->pos <= binfo.rows);
 
   key = extractFirstTraverseKey(pCheckInfo, pQueryHandle->order, pCfg->update);
@@ -1255,7 +1253,6 @@ static int32_t handleDataMergeIfNeeded(STsdbQueryHandle* pQueryHandle, SBlock* p
     tsdbDebug("%p no data in mem, 0x%"PRIx64, pQueryHandle, pQueryHandle->qId);
   }
 
-
   if ((ASCENDING_TRAVERSE(pQueryHandle->order) && (key != TSKEY_INITIAL_VAL && key <= binfo.window.ekey)) ||
       (!ASCENDING_TRAVERSE(pQueryHandle->order) && (key != TSKEY_INITIAL_VAL && key >= binfo.window.skey))) {
 
@@ -2706,6 +2703,7 @@ static bool loadBlockOfActiveTable(STsdbQueryHandle* pQueryHandle) {
     }
 
     if (exists) {
+      tsdbRetrieveDataBlock((TsdbQueryHandleT*) pQueryHandle, NULL);
       if (pQueryHandle->currentLoadExternalRows && pQueryHandle->window.skey == pQueryHandle->window.ekey) {
         SColumnInfoData* pColInfo = taosArrayGet(pQueryHandle->pColumns, 0);
         assert(*(int64_t*)pColInfo->pData == pQueryHandle->window.skey);