diff --git a/src/client/src/tscSecondaryMerge.c b/src/client/src/tscSecondaryMerge.c
index 71d50b56f9..a3a0441ff8 100644
--- a/src/client/src/tscSecondaryMerge.c
+++ b/src/client/src/tscSecondaryMerge.c
@@ -283,7 +283,6 @@ void tscCreateLocalReducer(tExtMemBuffer **pMemBuffer, int32_t numOfBuffer, tOrd
 
   // used to keep the latest input row
   pReducer->pTempBuffer = (tFilePage *)calloc(1, pReducer->rowSize + sizeof(tFilePage));
-
   pReducer->discardData = (tFilePage *)calloc(1, pReducer->rowSize + sizeof(tFilePage));
   pReducer->discard = false;
 
@@ -311,6 +310,8 @@ void tscCreateLocalReducer(tExtMemBuffer **pMemBuffer, int32_t numOfBuffer, tOrd
     return;
   }
 
+  size = tscSqlExprNumOfExprs(pQueryInfo);
+  
   pReducer->pTempBuffer->numOfElems = 0;
   pReducer->pResInfo = calloc(size, sizeof(SResultInfo));
 
diff --git a/src/query/src/queryExecutor.c b/src/query/src/queryExecutor.c
index 4b48d79316..670bda62ef 100644
--- a/src/query/src/queryExecutor.c
+++ b/src/query/src/queryExecutor.c
@@ -2399,7 +2399,7 @@ static int64_t doScanAllDataBlocks(SQueryRuntimeEnv *pRuntimeEnv) {
     // todo extract methods
     if (isIntervalQuery(pQuery) && pRuntimeEnv->windowResInfo.prevSKey == 0) {
       TSKEY           skey1, ekey1;
-      STimeWindow     w = {0};
+      STimeWindow     w = TSWINDOW_INITIALIZER;
       SWindowResInfo *pWindowResInfo = &pRuntimeEnv->windowResInfo;
 
       if (QUERY_IS_ASC_QUERY(pQuery)) {
diff --git a/src/tsdb/src/tsdbRead.c b/src/tsdb/src/tsdbRead.c
index b01407024d..7768ecf28e 100644
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
@@ -54,12 +54,12 @@ typedef struct SQueryFilePos {
 typedef struct SDataBlockLoadInfo {
   SFileGroup* fileGroup;
   int32_t     slot;
-  int32_t     sid;
+  int32_t     tid;
   SArray*     pLoadedCols;
 } SDataBlockLoadInfo;
 
 typedef struct SLoadCompBlockInfo {
-  int32_t sid; /* table sid */
+  int32_t tid; /* table tid */
   int32_t fileId;
   int32_t fileListIndex;
 } SLoadCompBlockInfo;
@@ -127,12 +127,12 @@ static void changeQueryHandleForLastrowQuery(TsdbQueryHandleT pqHandle);
 
 static void tsdbInitDataBlockLoadInfo(SDataBlockLoadInfo* pBlockLoadInfo) {
   pBlockLoadInfo->slot = -1;
-  pBlockLoadInfo->sid = -1;
+  pBlockLoadInfo->tid = -1;
   pBlockLoadInfo->fileGroup = NULL;
 }
 
 static void tsdbInitCompBlockLoadInfo(SLoadCompBlockInfo* pCompBlockLoadInfo) {
-  pCompBlockLoadInfo->sid = -1;
+  pCompBlockLoadInfo->tid = -1;
   pCompBlockLoadInfo->fileId = -1;
   pCompBlockLoadInfo->fileListIndex = -1;
 }
@@ -423,7 +423,7 @@ static bool doLoadFileDataBlock(STsdbQueryHandle* pQueryHandle, SCompBlock* pBlo
   bool    blockLoaded = false;
   SArray* sa = getDefaultLoadColumns(pQueryHandle, true);
 
-  if (pCheckInfo->pDataCols == NULL) {
+  if (pCheckInfo->pDataCols == NULL) { // todo: why not the real data?
     pCheckInfo->pDataCols = tdNewDataCols(pRepo->tsdbMeta->maxRowBytes, pRepo->tsdbMeta->maxCols, pRepo->config.maxRowsPerFileBlock);
   }
 
@@ -434,7 +434,7 @@ static bool doLoadFileDataBlock(STsdbQueryHandle* pQueryHandle, SCompBlock* pBlo
 
     pBlockLoadInfo->fileGroup = pQueryHandle->pFileGroup;
     pBlockLoadInfo->slot = pQueryHandle->cur.slot;
-    pBlockLoadInfo->sid = pCheckInfo->pTableObj->tableId.tid;
+    pBlockLoadInfo->tid = pCheckInfo->pTableObj->tableId.tid;
 
     blockLoaded = true;
   }
@@ -614,7 +614,7 @@ static void filterDataInDataBlock(STsdbQueryHandle* pQueryHandle, STableCheckInf
     SColumnInfoData* pCol = taosArrayGet(pQueryHandle->pColumns, i);
     int32_t bytes = pCol->info.bytes;
 
-    for (int32_t j = 0; j < numOfCols; ++j) {
+    for (int32_t j = 0; j < numOfCols; ++j) {  //todo opt performance
       SDataCol* src = &pQueryHandle->rhelper.pDataCols[0]->cols[j];
 
       if (pCol->info.colId == src->colId) {
@@ -1197,7 +1197,9 @@ SArray* tsdbRetrieveDataBlock(TsdbQueryHandleT* pQueryHandle, SArray* pIdList) {
     } else {
       // data block has been loaded, todo extract method
       SDataBlockLoadInfo* pBlockLoadInfo = &pHandle->dataBlockLoadInfo;
-      if (pBlockLoadInfo->slot == pHandle->cur.slot && pBlockLoadInfo->sid == pCheckInfo->pTableObj->tableId.tid) {
+      
+      if (pBlockLoadInfo->slot == pHandle->cur.slot && pBlockLoadInfo->fileGroup->fileId == pHandle->cur.fid &&
+          pBlockLoadInfo->tid == pCheckInfo->pTableObj->tableId.tid) {
         return pHandle->pColumns;
       } else {
         SCompBlock* pBlock = pBlockInfoEx->pBlock.compBlock;
diff --git a/tests/script/general/import/replica1.sim b/tests/script/general/import/replica1.sim
index b2b7291623..1bd1419496 100644
--- a/tests/script/general/import/replica1.sim
+++ b/tests/script/general/import/replica1.sim
@@ -111,7 +111,8 @@ sql import into tb values(1520000034001, 34001)
 sql import into tb values(1520000050001, 50001)
 sql select * from tb;
 print $rows
-if $rows != 19 then 
+if $rows != 19 then
+  print expect 19, actual: $rows
   return -1
 endi