diff --git a/include/common/tdataformat.h b/include/common/tdataformat.h
index 88f29b8f5c4d102d50bb259adb400a09b79c837b..864f034f16c3745e9b9f3377f975f7a47180d402 100644
--- a/include/common/tdataformat.h
+++ b/include/common/tdataformat.h
@@ -71,7 +71,7 @@ int32_t tBufferPut(SBuffer *pBuffer, const void *pData, int64_t nData);
 int32_t tBufferReserve(SBuffer *pBuffer, int64_t nData, void **ppData);
 
 // STSchema ================================
-void tTSchemaDestroy(STSchema *pTSchema);
+void tDestroyTSchema(STSchema *pTSchema);
 
 // SColVal ================================
 #define CV_FLAG_VALUE ((int8_t)0x0)
@@ -243,6 +243,8 @@ void      tdResetTSchemaBuilder(STSchemaBuilder *pBuilder, schema_ver_t version)
 int32_t   tdAddColToSchema(STSchemaBuilder *pBuilder, int8_t type, int8_t flags, col_id_t colId, col_bytes_t bytes);
 STSchema *tdGetSchemaFromBuilder(STSchemaBuilder *pBuilder);
 
+STSchema *tBuildTSchema(SSchema *aSchema, int32_t numOfCols, int32_t version);
+
 #endif
 
 #ifdef __cplusplus
diff --git a/source/common/src/tdataformat.c b/source/common/src/tdataformat.c
index 823b9182c25ecff98fd8e4682e38ebd15d6c82eb..7bf15b6c74212494021936b7adac2c5100aab859 100644
--- a/source/common/src/tdataformat.c
+++ b/source/common/src/tdataformat.c
@@ -709,9 +709,6 @@ _exit:
 }
 
 // STSchema ========================================
-void tTSchemaDestroy(STSchema *pTSchema) {
-  if (pTSchema) taosMemoryFree(pTSchema);
-}
 
 // STag ========================================
 static int tTagValCmprFn(const void *p1, const void *p2) {
@@ -1179,6 +1176,43 @@ STSchema *tdGetSchemaFromBuilder(STSchemaBuilder *pBuilder) {
 
 #endif
 
+STSchema *tBuildTSchema(SSchema *aSchema, int32_t numOfCols, int32_t version) {
+  STSchema *pTSchema = taosMemoryCalloc(1, sizeof(STSchema) + sizeof(STColumn) * numOfCols);
+  if (pTSchema == NULL) return NULL;
+
+  pTSchema->numOfCols = numOfCols;
+  pTSchema->version = version;
+
+  // timestamp column
+  ASSERT(aSchema[0].type == TSDB_DATA_TYPE_TIMESTAMP);
+  ASSERT(aSchema[0].colId == PRIMARYKEY_TIMESTAMP_COL_ID);
+  pTSchema->columns[0].colId = aSchema[0].colId;
+  pTSchema->columns[0].type = aSchema[0].type;
+  pTSchema->columns[0].flags = aSchema[0].flags;
+  pTSchema->columns[0].bytes = aSchema[0].bytes;
+  pTSchema->columns[0].offset = -1;
+
+  // other columns
+  for (int32_t iCol = 1; iCol < numOfCols; iCol++) {
+    SSchema  *pSchema = &aSchema[iCol];
+    STColumn *pTColumn = &pTSchema->columns[iCol];
+
+    pTColumn->colId = pSchema->colId;
+    pTColumn->type = pSchema->type;
+    pTColumn->flags = pSchema->flags;
+    pTColumn->bytes = pSchema->bytes;
+    pTColumn->offset = pTSchema->flen;
+
+    pTSchema->flen += TYPE_BYTES[pTColumn->type];
+  }
+
+  return pTSchema;
+}
+
+void tDestroyTSchema(STSchema *pTSchema) {
+  if (pTSchema) taosMemoryFree(pTSchema);
+}
+
 // SColData ========================================
 void tColDataDestroy(void *ph) {
   SColData *pColData = (SColData *)ph;
diff --git a/source/dnode/vnode/src/tsdb/tsdbCommit.c b/source/dnode/vnode/src/tsdb/tsdbCommit.c
index 65a46331aa8d4bd62f29f4e0c6c068ef4f95a6cd..cf9ae30ff07e3e17bacc9ae71ea5f222b5c16827 100644
--- a/source/dnode/vnode/src/tsdb/tsdbCommit.c
+++ b/source/dnode/vnode/src/tsdb/tsdbCommit.c
@@ -341,7 +341,7 @@ int32_t tsdbUpdateTableSchema(SMeta *pMeta, int64_t suid, int64_t uid, SSkmInfo
 
   pSkmInfo->suid = suid;
   pSkmInfo->uid = uid;
-  tTSchemaDestroy(pSkmInfo->pTSchema);
+  tDestroyTSchema(pSkmInfo->pTSchema);
   code = metaGetTbTSchemaEx(pMeta, suid, uid, -1, &pSkmInfo->pTSchema);
   TSDB_CHECK_CODE(code, lino, _exit);
 
@@ -365,7 +365,7 @@ static int32_t tsdbCommitterUpdateRowSchema(SCommitter *pCommitter, int64_t suid
 
   pCommitter->skmRow.suid = suid;
   pCommitter->skmRow.uid = uid;
-  tTSchemaDestroy(pCommitter->skmRow.pTSchema);
+  tDestroyTSchema(pCommitter->skmRow.pTSchema);
   code = metaGetTbTSchemaEx(pCommitter->pTsdb->pVnode->pMeta, suid, uid, sver, &pCommitter->skmRow.pTSchema);
   TSDB_CHECK_CODE(code, lino, _exit);
 
@@ -498,7 +498,7 @@ static int32_t tsdbCommitFileDataStart(SCommitter *pCommitter) {
 #if 0
   ASSERT(pCommitter->minKey <= pCommitter->nextKey && pCommitter->maxKey >= pCommitter->nextKey);
 #endif
-  
+
   pCommitter->nextKey = TSKEY_MAX;
 
   // Reader
@@ -623,7 +623,8 @@ int32_t tsdbWriteDataBlock(SDataFWriter *pWriter, SBlockData *pBlockData, SMapDa
 
 _exit:
   if (code) {
-    tsdbError("vgId:%d, %s failed at line %d since %s", TD_VID(pWriter->pTsdb->pVnode), __func__, lino, tstrerror(code));
+    tsdbError("vgId:%d, %s failed at line %d since %s", TD_VID(pWriter->pTsdb->pVnode), __func__, lino,
+              tstrerror(code));
   }
   return code;
 }
@@ -666,7 +667,8 @@ int32_t tsdbWriteSttBlock(SDataFWriter *pWriter, SBlockData *pBlockData, SArray
 
 _exit:
   if (code) {
-    tsdbError("vgId:%d, %s failed at line %d since %s", TD_VID(pWriter->pTsdb->pVnode), __func__, lino, tstrerror(code));
+    tsdbError("vgId:%d, %s failed at line %d since %s", TD_VID(pWriter->pTsdb->pVnode), __func__, lino,
+              tstrerror(code));
   }
   return code;
 }
@@ -706,7 +708,8 @@ static int32_t tsdbCommitSttBlk(SDataFWriter *pWriter, SDiskDataBuilder *pBuilde
 
 _exit:
   if (code) {
-    tsdbError("vgId:%d, %s failed at line %d since %s", TD_VID(pWriter->pTsdb->pVnode), __func__, lino, tstrerror(code));
+    tsdbError("vgId:%d, %s failed at line %d since %s", TD_VID(pWriter->pTsdb->pVnode), __func__, lino,
+              tstrerror(code));
   }
   return code;
 }
@@ -919,8 +922,8 @@ static void tsdbCommitDataEnd(SCommitter *pCommitter) {
 #else
   tBlockDataDestroy(&pCommitter->dWriter.bDatal, 1);
 #endif
-  tTSchemaDestroy(pCommitter->skmTable.pTSchema);
-  tTSchemaDestroy(pCommitter->skmRow.pTSchema);
+  tDestroyTSchema(pCommitter->skmTable.pTSchema);
+  tDestroyTSchema(pCommitter->skmRow.pTSchema);
 }
 
 static int32_t tsdbCommitData(SCommitter *pCommitter) {
diff --git a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
index ec89bed17a8c9ee002d751ee0c43bb5c0f5170e2..f4bdeeb387842d1a959f7269608a6f29f6decf28 100644
--- a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
+++ b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
@@ -555,7 +555,7 @@ int32_t tsdbSnapReaderClose(STsdbSnapReader** ppReader) {
   }
 
   tBlockDataDestroy(&pReader->bData, 1);
-  tTSchemaDestroy(pReader->skmTable.pTSchema);
+  tDestroyTSchema(pReader->skmTable.pTSchema);
 
   // del
   if (pReader->pDelFReader) tsdbDelFReaderClose(&pReader->pDelFReader);
@@ -1416,7 +1416,7 @@ int32_t tsdbSnapWriterClose(STsdbSnapWriter** ppWriter, int8_t rollback) {
   taosArrayDestroy(pWriter->dReader.aBlockIdx);
 
   tBlockDataDestroy(&pWriter->bData, 1);
-  tTSchemaDestroy(pWriter->skmTable.pTSchema);
+  tDestroyTSchema(pWriter->skmTable.pTSchema);
 
   for (int32_t iBuf = 0; iBuf < sizeof(pWriter->aBuf) / sizeof(uint8_t*); iBuf++) {
     tFree(pWriter->aBuf[iBuf]);