diff --git a/source/dnode/vnode/src/inc/tsdb.h b/source/dnode/vnode/src/inc/tsdb.h
index ed71891783d8340f5b721a54b9c954076f2ecb52..b9ca91f6b5a3954dab3ef72157777e256b8003d4 100644
--- a/source/dnode/vnode/src/inc/tsdb.h
+++ b/source/dnode/vnode/src/inc/tsdb.h
@@ -70,6 +70,9 @@ typedef struct SDiskData        SDiskData;
 typedef struct SDiskDataBuilder SDiskDataBuilder;
 typedef struct SBlkInfo         SBlkInfo;
 
+#define TSDBROW_ROW_FMT ((int8_t)0x0)
+#define TSDBROW_COL_FMT ((int8_t)0x1)
+
 #define TSDB_FILE_DLMT     ((uint32_t)0xF00AFA0F)
 #define TSDB_MAX_SUBBLOCKS 8
 #define TSDB_FHDR_SIZE     512
@@ -102,12 +105,13 @@ static FORCE_INLINE int64_t tsdbLogicToFileSize(int64_t lSize, int32_t szPage) {
 
 // tsdbUtil.c ==============================================================================================
 // TSDBROW
-#define TSDBROW_TS(ROW)                       (((ROW)->type == 0) ? (ROW)->pTSRow->ts : (ROW)->pBlockData->aTSKEY[(ROW)->iRow])
-#define TSDBROW_VERSION(ROW)                  (((ROW)->type == 0) ? (ROW)->version : (ROW)->pBlockData->aVersion[(ROW)->iRow])
-#define TSDBROW_SVERSION(ROW)                 TD_ROW_SVER((ROW)->pTSRow)
-#define TSDBROW_KEY(ROW)                      ((TSDBKEY){.version = TSDBROW_VERSION(ROW), .ts = TSDBROW_TS(ROW)})
-#define tsdbRowFromTSRow(VERSION, TSROW)      ((TSDBROW){.type = 0, .version = (VERSION), .pTSRow = (TSROW)})
-#define tsdbRowFromBlockData(BLOCKDATA, IROW) ((TSDBROW){.type = 1, .pBlockData = (BLOCKDATA), .iRow = (IROW)})
+#define TSDBROW_TS(ROW)                  (((ROW)->type == 0) ? (ROW)->pTSRow->ts : (ROW)->pBlockData->aTSKEY[(ROW)->iRow])
+#define TSDBROW_VERSION(ROW)             (((ROW)->type == 0) ? (ROW)->version : (ROW)->pBlockData->aVersion[(ROW)->iRow])
+#define TSDBROW_SVERSION(ROW)            TD_ROW_SVER((ROW)->pTSRow)
+#define TSDBROW_KEY(ROW)                 ((TSDBKEY){.version = TSDBROW_VERSION(ROW), .ts = TSDBROW_TS(ROW)})
+#define tsdbRowFromTSRow(VERSION, TSROW) ((TSDBROW){.type = TSDBROW_ROW_FMT, .version = (VERSION), .pTSRow = (TSROW)})
+#define tsdbRowFromBlockData(BLOCKDATA, IROW) \
+  ((TSDBROW){.type = TSDBROW_COL_FMT, .pBlockData = (BLOCKDATA), .iRow = (IROW)})
 void tsdbRowGetColVal(TSDBROW *pRow, STSchema *pTSchema, int32_t iCol, SColVal *pColVal);
 // int32_t tPutTSDBRow(uint8_t *p, TSDBROW *pRow);
 int32_t tsdbRowCmprFn(const void *p1, const void *p2);
@@ -335,10 +339,13 @@ struct SVersionRange {
 typedef struct SMemSkipListNode SMemSkipListNode;
 struct SMemSkipListNode {
   int8_t            level;
+  int8_t            flag;  // TSDBROW_ROW_FMT for row format, TSDBROW_COL_FMT for col format
+  int32_t           iRow;
   int64_t           version;
-  SRow             *pTSRow;
+  void             *pData;
   SMemSkipListNode *forwards[0];
 };
+
 typedef struct SMemSkipList {
   int64_t           size;
   uint32_t          seed;
@@ -376,7 +383,7 @@ struct SMemTable {
 };
 
 struct TSDBROW {
-  int8_t type;  // 0 for row from tsRow, 1 for row from block data
+  int8_t type;  // TSDBROW_ROW_FMT for row from tsRow, TSDBROW_COL_FMT for row from block data
   union {
     struct {
       int64_t version;
@@ -795,8 +802,13 @@ static FORCE_INLINE TSDBROW *tsdbTbDataIterGet(STbDataIter *pIter) {
   }
 
   pIter->pRow = &pIter->row;
-  pIter->pRow->version = pIter->pNode->version;
-  pIter->pRow->pTSRow = pIter->pNode->pTSRow;
+  if (pIter->pNode->flag == TSDBROW_ROW_FMT) {
+    pIter->row = tsdbRowFromTSRow(pIter->pNode->version, pIter->pNode->pData);
+  } else if (pIter->pNode->flag == TSDBROW_COL_FMT) {
+    pIter->row = tsdbRowFromBlockData(pIter->pNode->pData, pIter->pNode->iRow);
+  } else {
+    ASSERT(0);
+  }
 
   return pIter->pRow;
 }
diff --git a/source/dnode/vnode/src/tsdb/tsdbMemTable.c b/source/dnode/vnode/src/tsdb/tsdbMemTable.c
index b1f4e2d53a66785348976a12406acc17fb456508..f69e9e23b9862c3a80331a1d967ed82a5adfd94d 100644
--- a/source/dnode/vnode/src/tsdb/tsdbMemTable.c
+++ b/source/dnode/vnode/src/tsdb/tsdbMemTable.c
@@ -247,7 +247,6 @@ void tsdbTbDataIterOpen(STbData *pTbData, TSDBKEY *pFrom, int8_t backward, STbDa
   pIter->pTbData = pTbData;
   pIter->backward = backward;
   pIter->pRow = NULL;
-  pIter->row.type = 0;
   if (pFrom == NULL) {
     // create from head or tail
     if (backward) {
@@ -415,8 +414,13 @@ static void tbDataMovePosTo(STbData *pTbData, SMemSkipListNode **pos, TSDBKEY *p
       for (int8_t iLevel = pTbData->sl.level - 1; iLevel >= 0; iLevel--) {
         pn = SL_NODE_BACKWARD(px, iLevel);
         while (pn != pTbData->sl.pHead) {
-          tKey.version = pn->version;
-          tKey.ts = pn->pTSRow->ts;
+          if (pn->flag == TSDBROW_ROW_FMT) {
+            tKey.version = pn->version;
+            tKey.ts = ((SRow *)pn->pData)->ts;
+          } else if (pn->flag == TSDBROW_COL_FMT) {
+            tKey.version = ((SBlockData *)pn->pData)->aVersion[pn->iRow];
+            tKey.ts = ((SBlockData *)pn->pData)->aTSKEY[pn->iRow];
+          }
 
           int32_t c = tsdbKeyCmprFn(&tKey, pKey);
           if (c <= 0) {
@@ -445,8 +449,13 @@ static void tbDataMovePosTo(STbData *pTbData, SMemSkipListNode **pos, TSDBKEY *p
       for (int8_t iLevel = pTbData->sl.level - 1; iLevel >= 0; iLevel--) {
         pn = SL_NODE_FORWARD(px, iLevel);
         while (pn != pTbData->sl.pTail) {
-          tKey.version = pn->version;
-          tKey.ts = pn->pTSRow->ts;
+          if (pn->flag == TSDBROW_ROW_FMT) {
+            tKey.version = pn->version;
+            tKey.ts = ((SRow *)pn->pData)->ts;
+          } else if (pn->flag == TSDBROW_COL_FMT) {
+            tKey.version = ((SBlockData *)pn->pData)->aVersion[pn->iRow];
+            tKey.ts = ((SBlockData *)pn->pData)->aTSKEY[pn->iRow];
+          }
 
           int32_t c = tsdbKeyCmprFn(&tKey, pKey);
           if (c >= 0) {
@@ -473,29 +482,37 @@ static FORCE_INLINE int8_t tsdbMemSkipListRandLevel(SMemSkipList *pSl) {
 
   return level;
 }
-static int32_t tbDataDoPut(SMemTable *pMemTable, STbData *pTbData, SMemSkipListNode **pos, int64_t version, SRow *pRow,
+static int32_t tbDataDoPut(SMemTable *pMemTable, STbData *pTbData, SMemSkipListNode **pos, TSDBROW *pRow,
                            int8_t forward) {
   int32_t           code = 0;
   int8_t            level;
   SMemSkipListNode *pNode;
   SVBufPool        *pPool = pMemTable->pTsdb->pVnode->inUse;
 
+  ASSERT(pPool != NULL);
+
   // node
   level = tsdbMemSkipListRandLevel(&pTbData->sl);
-  ASSERT(pPool != NULL);
   pNode = (SMemSkipListNode *)vnodeBufPoolMalloc(pPool, SL_NODE_SIZE(level));
   if (pNode == NULL) {
     code = TSDB_CODE_OUT_OF_MEMORY;
     goto _exit;
   }
   pNode->level = level;
-  pNode->version = version;
-  pNode->pTSRow = vnodeBufPoolMalloc(pPool, pRow->len);
-  if (NULL == pNode->pTSRow) {
-    code = TSDB_CODE_OUT_OF_MEMORY;
-    goto _exit;
+  pNode->flag = pRow->type;
+
+  if (pRow->type == TSDBROW_ROW_FMT) {
+    pNode->version = pRow->version;
+    pNode->pData = vnodeBufPoolMalloc(pPool, pRow->pTSRow->len);
+    if (NULL == pNode->pData) {
+      code = TSDB_CODE_OUT_OF_MEMORY;
+      goto _exit;
+    }
+    memcpy(pNode->pData, pRow->pTSRow, pRow->pTSRow->len);
+  } else if (pRow->type == TSDBROW_COL_FMT) {
+    pNode->iRow = pRow->iRow;
+    pNode->pData = pRow->pBlockData;
   }
-  memcpy(pNode->pTSRow, pRow, pRow->len);
 
   for (int8_t iLevel = level - 1; iLevel >= 0; iLevel--) {
     SMemSkipListNode *pn = pos[iLevel];
@@ -589,13 +606,12 @@ static int32_t tsdbInsertColDataToTable(SMemTable *pMemTable, STbData *pTbData,
   TSDBKEY           key = {.version = version};
   SMemSkipListNode *pos[SL_MAX_LEVEL];
   int32_t           iRow = 0;
-  TSDBROW           row = tsdbRowFromBlockData(pBlockData, iRow);
+  TSDBROW           tRow = {.type = TSDBROW_COL_FMT, .pBlockData = pBlockData};
 
-  // TODO
+  tRow.iRow = iRow++;
   tbDataMovePosTo(pTbData, pos, &key, SL_MOVE_BACKWARD);
-  code = tbDataDoPut(pMemTable, pTbData, pos, version, NULL, 0);
+  code = tbDataDoPut(pMemTable, pTbData, pos, &tRow, 0);
   if (code) goto _exit;
-  ++iRow;
 
   if (iRow < pBlockData->nRow) {
     for (int8_t iLevel = pos[0]->level; iLevel < pTbData->sl.maxLevel; iLevel++) {
@@ -607,9 +623,9 @@ static int32_t tsdbInsertColDataToTable(SMemTable *pMemTable, STbData *pTbData,
         tbDataMovePosTo(pTbData, pos, &key, SL_MOVE_FROM_POS);
       }
 
-      code = tbDataDoPut(pMemTable, pTbData, pos, version, NULL, 0);
+      tRow.iRow = ++iRow;
+      code = tbDataDoPut(pMemTable, pTbData, pos, &tRow, 0);
       if (code) goto _exit;
-      ++iRow;
     }
   }
 
@@ -621,25 +637,25 @@ static int32_t tsdbInsertRowDataToTable(SMemTable *pMemTable, STbData *pTbData,
                                         SSubmitTbData *pSubmitTbData, int32_t *affectedRows) {
   int32_t code = 0;
 
-  SRow            **rows = (SRow **)TARRAY_DATA(pSubmitTbData->aRowP);
+  int32_t           nRow = TARRAY_SIZE(pSubmitTbData->aRowP);
+  SRow            **aRow = (SRow **)TARRAY_DATA(pSubmitTbData->aRowP);
   TSDBKEY           key = {.version = version};
   SMemSkipListNode *pos[SL_MAX_LEVEL];
-  TSDBROW           row = tsdbRowFromTSRow(version, NULL);
-  int32_t           nRow = TARRAY_SIZE(pSubmitTbData->aRowP);
+  TSDBROW           tRow = {.type = TSDBROW_ROW_FMT, .version = version};
   int32_t           iRow = 0;
   SRow             *pLastRow = NULL;
 
   // backward put first data
-  row.pTSRow = rows[iRow];
-  key.ts = row.pTSRow->ts;
+  tRow.pTSRow = aRow[iRow];
+  key.ts = aRow[iRow]->ts;
   iRow++;
   tbDataMovePosTo(pTbData, pos, &key, SL_MOVE_BACKWARD);
-  code = tbDataDoPut(pMemTable, pTbData, pos, version, row.pTSRow, 0);
+  code = tbDataDoPut(pMemTable, pTbData, pos, &tRow, 0);
   if (code) goto _exit;
 
   pTbData->minKey = TMIN(pTbData->minKey, key.ts);
 
-  pLastRow = row.pTSRow;
+  pLastRow = tRow.pTSRow;
 
   // forward put rest data
   if (iRow < nRow) {
@@ -648,17 +664,17 @@ static int32_t tsdbInsertRowDataToTable(SMemTable *pMemTable, STbData *pTbData,
     }
 
     while (iRow < nRow) {
-      row.pTSRow = rows[iRow];
-      key.ts = row.pTSRow->ts;
+      tRow.pTSRow = aRow[iRow];
+      key.ts = tRow.pTSRow->ts;
 
       if (SL_NODE_FORWARD(pos[0], 0) != pTbData->sl.pTail) {
         tbDataMovePosTo(pTbData, pos, &key, SL_MOVE_FROM_POS);
       }
 
-      code = tbDataDoPut(pMemTable, pTbData, pos, version, row.pTSRow, 1);
+      code = tbDataDoPut(pMemTable, pTbData, pos, &tRow, 1);
       if (code) goto _exit;
 
-      pLastRow = row.pTSRow;
+      pLastRow = tRow.pTSRow;
 
       iRow++;
     }