diff --git a/src/tsdb/inc/tsdbMain.h b/src/tsdb/inc/tsdbMain.h
index d856650b0ee245bdd132e4e3fb22e25dfb8aa40a..7d1a5a52de8cf4982f85e68b388007718a7aa741 100644
--- a/src/tsdb/inc/tsdbMain.h
+++ b/src/tsdb/inc/tsdbMain.h
@@ -195,7 +195,6 @@ typedef struct {
 typedef struct {
   uint32_t len;
   uint32_t offset;
-  // uint32_t padding;
   uint32_t hasLast : 2;
   uint32_t numOfBlocks : 30;
   uint64_t uid;
@@ -224,7 +223,7 @@ typedef struct {
 
 typedef struct {
   int16_t colId;
-  int16_t len;
+  int32_t len;
   int32_t type : 8;
   int32_t offset : 24;
   int64_t sum;
@@ -438,8 +437,9 @@ int   tsdbLoadCompIdx(SRWHelper* pHelper, void* target);
 int   tsdbLoadCompInfo(SRWHelper* pHelper, void* target);
 int   tsdbLoadCompData(SRWHelper* phelper, SCompBlock* pcompblock, void* target);
 void  tsdbGetDataStatis(SRWHelper* pHelper, SDataStatis* pStatis, int numOfCols);
-int   tsdbLoadBlockDataCols(SRWHelper* pHelper, SCompBlock* pCompBlock, int16_t* colIds, int numOfColIds);
-int   tsdbLoadBlockData(SRWHelper* pHelper, SCompBlock* pCompBlock);
+int   tsdbLoadBlockDataCols(SRWHelper* pHelper, SCompBlock* pCompBlock, SCompInfo* pCompInfo, int16_t* colIds,
+                            int numOfColIds);
+int   tsdbLoadBlockData(SRWHelper* pHelper, SCompBlock* pCompBlock, SCompInfo* pCompInfo);
 
 // ------------------ tsdbMain.c
 #define REPO_ID(r) (r)->config.tsdbId
diff --git a/src/tsdb/src/tsdbRWHelper.c b/src/tsdb/src/tsdbRWHelper.c
index 9e87a1f587971be02f66151725d7f1a19455184b..326da07a3662fe6b037a5ce2722ee191719cd0bd 100644
--- a/src/tsdb/src/tsdbRWHelper.c
+++ b/src/tsdb/src/tsdbRWHelper.c
@@ -318,7 +318,7 @@ int tsdbMoveLastBlockIfNeccessary(SRWHelper *pHelper) {
     ASSERT(pCompBlock->last);
 
     if (pCompBlock->numOfSubBlocks > 1) {
-      if (tsdbLoadBlockData(pHelper, blockAtIdx(pHelper, pIdx->numOfBlocks - 1)) < 0) return -1;
+      if (tsdbLoadBlockData(pHelper, blockAtIdx(pHelper, pIdx->numOfBlocks - 1), NULL) < 0) return -1;
       ASSERT(pHelper->pDataCols[0]->numOfRows > 0 && pHelper->pDataCols[0]->numOfRows < pCfg->minRowsPerFileBlock);
       if (tsdbWriteBlockToFile(pHelper, &(pHelper->files.nLastF), pHelper->pDataCols[0],
                                pHelper->pDataCols[0]->numOfRows, &compBlock, true, true) < 0)
@@ -577,11 +577,12 @@ void tsdbGetDataStatis(SRWHelper *pHelper, SDataStatis *pStatis, int numOfCols)
   }
 }
 
-int tsdbLoadBlockDataCols(SRWHelper *pHelper, SCompBlock *pCompBlock, int16_t *colIds, int numOfColIds) {
+int tsdbLoadBlockDataCols(SRWHelper *pHelper, SCompBlock *pCompBlock, SCompInfo *pCompInfo, int16_t *colIds, int numOfColIds) {
   ASSERT(pCompBlock->numOfSubBlocks >= 1);  // Must be super block
 
   int numOfSubBlocks = pCompBlock->numOfSubBlocks;
-  if (numOfSubBlocks > 1) pCompBlock = (SCompBlock *)POINTER_SHIFT(pHelper->pCompInfo, pCompBlock->offset);
+  if (numOfSubBlocks > 1)
+    pCompBlock = (SCompBlock *)POINTER_SHIFT((pCompInfo == NULL) ? pHelper->pCompInfo : pCompInfo, pCompBlock->offset);
 
   tdResetDataCols(pHelper->pDataCols[0]);
   if (tsdbLoadBlockDataColsImpl(pHelper, pCompBlock, pHelper->pDataCols[0], colIds, numOfColIds) < 0) goto _err;
@@ -598,10 +599,10 @@ _err:
   return -1;
 }
 
-int tsdbLoadBlockData(SRWHelper *pHelper, SCompBlock *pCompBlock) {
-
+int tsdbLoadBlockData(SRWHelper *pHelper, SCompBlock *pCompBlock, SCompInfo *pCompInfo) {
   int numOfSubBlock = pCompBlock->numOfSubBlocks;
-  if (numOfSubBlock > 1) pCompBlock = (SCompBlock *)POINTER_SHIFT(pHelper->pCompInfo, pCompBlock->offset);
+  if (numOfSubBlock > 1)
+    pCompBlock = (SCompBlock *)POINTER_SHIFT((pCompInfo == NULL) ? pHelper->pCompInfo : pCompInfo, pCompBlock->offset);
 
   tdResetDataCols(pHelper->pDataCols[0]);
   if (tsdbLoadBlockDataImpl(pHelper, pCompBlock, pHelper->pDataCols[0]) < 0) goto _err;
@@ -703,6 +704,7 @@ static int tsdbWriteBlockToFile(SRWHelper *pHelper, SFile *pFile, SDataCols *pDa
     }
 
     // Add checksum
+    ASSERT(pCompCol->len > 0);
     pCompCol->len += sizeof(TSCKSUM);
     taosCalcChecksumAppend(0, (uint8_t *)tptr, pCompCol->len);
 
@@ -792,7 +794,7 @@ static int tsdbMergeDataWithBlock(SRWHelper *pHelper, int blkIdx, SDataCols *pDa
       if (tsdbAddSubBlock(pHelper, &compBlock, blkIdx, rowsWritten) < 0) goto _err;
     } else {
       // Load
-      if (tsdbLoadBlockData(pHelper, blockAtIdx(pHelper, blkIdx)) < 0) goto _err;
+      if (tsdbLoadBlockData(pHelper, blockAtIdx(pHelper, blkIdx), NULL) < 0) goto _err;
       ASSERT(pHelper->pDataCols[0]->numOfRows <= blockAtIdx(pHelper, blkIdx)->numOfRows);
       // Merge
       if (tdMergeDataCols(pHelper->pDataCols[0], pDataCols, rowsWritten) < 0) goto _err;
@@ -848,7 +850,7 @@ static int tsdbMergeDataWithBlock(SRWHelper *pHelper, int blkIdx, SDataCols *pDa
       if (tsdbAddSubBlock(pHelper, &compBlock, blkIdx, rowsWritten) < 0) goto _err;
     } else {  // Load-Merge-Write
       // Load
-      if (tsdbLoadBlockData(pHelper, blockAtIdx(pHelper, blkIdx)) < 0) goto _err;
+      if (tsdbLoadBlockData(pHelper, blockAtIdx(pHelper, blkIdx), NULL) < 0) goto _err;
       if (blockAtIdx(pHelper, blkIdx)->last) pHelper->hasOldLastBlock = false;
 
       rowsWritten = rows3;
diff --git a/src/tsdb/src/tsdbRead.c b/src/tsdb/src/tsdbRead.c
index 6a9c8e1ff668ed9792b10f427e8b5d93dfded847..9ca78533ba1650483f65d891f7b00178e62621f5 100644
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
@@ -592,9 +592,12 @@ static bool doLoadFileDataBlock(STsdbQueryHandle* pQueryHandle, SCompBlock* pBlo
     pCheckInfo->pDataCols = tdNewDataCols(pMeta->maxRowBytes, pMeta->maxCols, pRepo->config.maxRowsPerFileBlock);
   }
 
-  tdInitDataCols(pCheckInfo->pDataCols, tsdbGetTableSchema(pCheckInfo->pTableObj));
+  STSchema* pSchema = tsdbGetTableSchema(pCheckInfo->pTableObj);
+  tdInitDataCols(pCheckInfo->pDataCols, pSchema);
+  tdInitDataCols(pQueryHandle->rhelper.pDataCols[0], pSchema);
+  tdInitDataCols(pQueryHandle->rhelper.pDataCols[1], pSchema);
 
-  if (tsdbLoadBlockData(&(pQueryHandle->rhelper), pBlock) == 0) {
+  if (tsdbLoadBlockData(&(pQueryHandle->rhelper), pBlock, pCheckInfo->pCompInfo) == 0) {
     SDataBlockLoadInfo* pBlockLoadInfo = &pQueryHandle->dataBlockLoadInfo;
 
     pBlockLoadInfo->fileGroup = pQueryHandle->pFileGroup;