diff --git a/cmake/bdb_CMakeLists.txt.in.bak b/cmake/bdb_CMakeLists.txt.in
similarity index 100%
rename from cmake/bdb_CMakeLists.txt.in.bak
rename to cmake/bdb_CMakeLists.txt.in
diff --git a/cmake/cmake.options b/cmake/cmake.options
index a60f5c7282..d83ab49fd5 100644
--- a/cmake/cmake.options
+++ b/cmake/cmake.options
@@ -78,6 +78,12 @@ option(
     OFF
 )
 
+option(
+    BUILD_WITH_BDB
+    "If build with BDB" 
+    OFF
+)
+
 option(
     BUILD_WITH_LUCENE 
     "If build with lucene" 
diff --git a/contrib/CMakeLists.txt b/contrib/CMakeLists.txt
index 14a85ee4f6..97bfcfb8c0 100644
--- a/contrib/CMakeLists.txt
+++ b/contrib/CMakeLists.txt
@@ -78,9 +78,9 @@ if(${BUILD_WITH_UV})
 endif(${BUILD_WITH_UV})
 
 # bdb
-#if(${BUILD_WITH_BDB})
-    #cat("${TD_SUPPORT_DIR}/bdb_CMakeLists.txt.in" ${CONTRIB_TMP_FILE})
-#endif(${BUILD_WITH_BDB})
+if(${BUILD_WITH_BDB})
+    cat("${TD_SUPPORT_DIR}/bdb_CMakeLists.txt.in" ${CONTRIB_TMP_FILE})
+endif(${BUILD_WITH_BDB})
 
 # sqlite
 if(${BUILD_WITH_SQLITE})
diff --git a/contrib/test/CMakeLists.txt b/contrib/test/CMakeLists.txt
index 740488b39b..eacaeb9524 100644
--- a/contrib/test/CMakeLists.txt
+++ b/contrib/test/CMakeLists.txt
@@ -7,9 +7,9 @@ if(${BUILD_WITH_LUCENE})
     add_subdirectory(lucene)
 endif(${BUILD_WITH_LUCENE})
 
-#if(${BUILD_WITH_BDB})
-    #add_subdirectory(bdb)
-#endif(${BUILD_WITH_BDB})
+if(${BUILD_WITH_BDB})
+    add_subdirectory(bdb)
+endif(${BUILD_WITH_BDB})
 
 if(${BUILD_WITH_SQLITE})
     add_subdirectory(sqlite)
diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index b54ea58c4e..24ed795a02 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -1670,6 +1670,7 @@ typedef struct SVDropStbReq {
 int32_t tEncodeSVDropStbReq(SEncoder* pCoder, const SVDropStbReq* pReq);
 int32_t tDecodeSVDropStbReq(SDecoder* pCoder, SVDropStbReq* pReq);
 
+// TDMT_VND_CREATE_TABLE ==============
 #define TD_CREATE_IF_NOT_EXISTS 0x1
 typedef struct SVCreateTbReq {
   int32_t     flags;
@@ -1759,6 +1760,45 @@ typedef struct {
 int32_t tEncodeSVDropTbBatchRsp(SEncoder* pCoder, const SVDropTbBatchRsp* pRsp);
 int32_t tDecodeSVDropTbBatchRsp(SDecoder* pCoder, SVDropTbBatchRsp* pRsp);
 
+// TDMT_VND_ALTER_TABLE =====================
+typedef struct {
+  const char* tbName;
+  int8_t      action;
+  // TSDB_ALTER_TABLE_ADD_COLUMN
+  int8_t      type;
+  int32_t     bytes;
+  const char* colAddName;
+  // TSDB_ALTER_TABLE_DROP_COLUMN
+  const char* colDropName;
+  // TSDB_ALTER_TABLE_UPDATE_COLUMN_BYTES
+  const char* colModName;
+  int32_t     colModBytes;
+  // TSDB_ALTER_TABLE_UPDATE_COLUMN_NAME
+  const char* colOldName;
+  const char* colNewName;
+  // TSDB_ALTER_TABLE_UPDATE_TAG_VAL
+  const char*    tagName;
+  int8_t         isNull;
+  uint32_t       nTagVal;
+  const uint8_t* pTagVal;
+  // TSDB_ALTER_TABLE_UPDATE_OPTIONS
+  int8_t      updateTTL;
+  int32_t     newTTL;
+  int8_t      updateComment;
+  const char* newComment;
+} SVAlterTbReq;
+
+int32_t tEncodeSVAlterTbReq(SEncoder* pEncoder, const SVAlterTbReq* pReq);
+int32_t tDecodeSVAlterTbReq(SDecoder* pDecoder, SVAlterTbReq* pReq);
+
+typedef struct {
+  int32_t code;
+} SVAlterTbRsp;
+
+int32_t tEncodeSVAlterTbRsp(SEncoder* pEncoder, const SVAlterTbRsp* pRsp);
+int32_t tDecodeSVAlterTbRsp(SDecoder* pDecoder, SVAlterTbRsp* pRsp);
+// ======================
+
 typedef struct {
   SMsgHead head;
   int64_t  uid;
diff --git a/include/util/tencode.h b/include/util/tencode.h
index 2a43d7934f..e49429f865 100644
--- a/include/util/tencode.h
+++ b/include/util/tencode.h
@@ -18,7 +18,6 @@
 
 #include "tcoding.h"
 #include "tlist.h"
-// #include "tfreelist.h"
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/include/util/tfreelist.h b/include/util/tfreelist.h
deleted file mode 100644
index e9b5ca5fca..0000000000
--- a/include/util/tfreelist.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef _TD_UTIL_FREELIST_H_
-#define _TD_UTIL_FREELIST_H_
-
-#include "tlist.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct SFreeListNode {
-  TD_SLIST_NODE(SFreeListNode);
-  char payload[];
-};
-
-typedef TD_SLIST(SFreeListNode) SFreeList;
-
-#define TFL_MALLOC(PTR, TYPE, SIZE, LIST)                      \
-  do {                                                         \
-    void *ptr = taosMemoryMalloc((SIZE) + sizeof(struct SFreeListNode)); \
-    if (ptr) {                                                 \
-      TD_SLIST_PUSH((LIST), (struct SFreeListNode *)ptr);      \
-      ptr = ((struct SFreeListNode *)ptr)->payload;            \
-      (PTR) = (TYPE)(ptr);                                     \
-    }else{                                                     \
-      (PTR) = NULL;                                            \
-    }                                                          \
-  }while(0);
-
-#define tFreeListInit(pFL) TD_SLIST_INIT(pFL)
-
-static FORCE_INLINE void tFreeListClear(SFreeList *pFL) {
-  struct SFreeListNode *pNode;
-  for (;;) {
-    pNode = TD_SLIST_HEAD(pFL);
-    if (pNode == NULL) break;
-    TD_SLIST_POP(pFL);
-    taosMemoryFree(pNode);
-  }
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /*_TD_UTIL_FREELIST_H_*/
\ No newline at end of file
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index b954edcbfa..e539aa3467 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -4163,3 +4163,111 @@ void tFreeSSubmitRsp(SSubmitRsp *pRsp) {
 
   taosMemoryFree(pRsp);
 }
+
+int32_t tEncodeSVAlterTbReq(SEncoder *pEncoder, const SVAlterTbReq *pReq) {
+  if (tStartEncode(pEncoder) < 0) return -1;
+
+  if (tEncodeCStr(pEncoder, pReq->tbName) < 0) return -1;
+  if (tEncodeI8(pEncoder, pReq->action) < 0) return -1;
+  switch (pReq->action) {
+    case TSDB_ALTER_TABLE_ADD_COLUMN:
+      if (tEncodeI8(pEncoder, pReq->type) < 0) return -1;
+      if (tEncodeI32v(pEncoder, pReq->bytes) < 0) return -1;
+      if (tEncodeCStr(pEncoder, pReq->colAddName) < 0) return -1;
+      break;
+    case TSDB_ALTER_TABLE_DROP_COLUMN:
+      if (tEncodeCStr(pEncoder, pReq->colDropName) < 0) return -1;
+      break;
+    case TSDB_ALTER_TABLE_UPDATE_COLUMN_BYTES:
+      if (tEncodeCStr(pEncoder, pReq->colModName) < 0) return -1;
+      if (tEncodeI32v(pEncoder, pReq->colModBytes) < 0) return -1;
+      break;
+    case TSDB_ALTER_TABLE_UPDATE_COLUMN_NAME:
+      if (tEncodeCStr(pEncoder, pReq->colOldName) < 0) return -1;
+      if (tEncodeCStr(pEncoder, pReq->colNewName) < 0) return -1;
+      break;
+    case TSDB_ALTER_TABLE_UPDATE_TAG_VAL:
+      if (tEncodeCStr(pEncoder, pReq->tagName) < 0) return -1;
+      if (tEncodeI8(pEncoder, pReq->isNull) < 0) return -1;
+      if (!pReq->isNull) {
+        if (tEncodeBinary(pEncoder, pReq->pTagVal, pReq->nTagVal) < 0) return -1;
+      }
+      break;
+    case TSDB_ALTER_TABLE_UPDATE_OPTIONS:
+      if (tEncodeI8(pEncoder, pReq->updateTTL) < 0) return -1;
+      if (pReq->updateTTL) {
+        if (tEncodeI32v(pEncoder, pReq->newTTL) < 0) return -1;
+      }
+      if (tEncodeI8(pEncoder, pReq->updateComment) < 0) return -1;
+      if (pReq->updateComment) {
+        if (tEncodeCStr(pEncoder, pReq->newComment) < 0) return -1;
+      }
+      break;
+    default:
+      break;
+  }
+
+  tEndEncode(pEncoder);
+  return 0;
+}
+
+int32_t tDecodeSVAlterTbReq(SDecoder *pDecoder, SVAlterTbReq *pReq) {
+  if (tStartDecode(pDecoder) < 0) return -1;
+
+  if (tDecodeCStr(pDecoder, &pReq->tbName) < 0) return -1;
+  if (tDecodeI8(pDecoder, &pReq->action) < 0) return -1;
+  switch (pReq->action) {
+    case TSDB_ALTER_TABLE_ADD_COLUMN:
+      if (tDecodeI8(pDecoder, &pReq->type) < 0) return -1;
+      if (tDecodeI32v(pDecoder, &pReq->bytes) < 0) return -1;
+      if (tDecodeCStr(pDecoder, &pReq->colAddName) < 0) return -1;
+      break;
+    case TSDB_ALTER_TABLE_DROP_COLUMN:
+      if (tDecodeCStr(pDecoder, &pReq->colDropName) < 0) return -1;
+      break;
+    case TSDB_ALTER_TABLE_UPDATE_COLUMN_BYTES:
+      if (tDecodeCStr(pDecoder, &pReq->colModName) < 0) return -1;
+      if (tDecodeI32v(pDecoder, &pReq->colModBytes) < 0) return -1;
+      break;
+    case TSDB_ALTER_TABLE_UPDATE_COLUMN_NAME:
+      if (tDecodeCStr(pDecoder, &pReq->colOldName) < 0) return -1;
+      if (tDecodeCStr(pDecoder, &pReq->colNewName) < 0) return -1;
+      break;
+    case TSDB_ALTER_TABLE_UPDATE_TAG_VAL:
+      if (tDecodeCStr(pDecoder, &pReq->tagName) < 0) return -1;
+      if (tDecodeI8(pDecoder, &pReq->isNull) < 0) return -1;
+      if (!pReq->isNull) {
+        if (tDecodeBinary(pDecoder, &pReq->pTagVal, &pReq->nTagVal) < 0) return -1;
+      }
+      break;
+    case TSDB_ALTER_TABLE_UPDATE_OPTIONS:
+      if (tDecodeI8(pDecoder, &pReq->updateTTL) < 0) return -1;
+      if (pReq->updateTTL) {
+        if (tDecodeI32v(pDecoder, &pReq->newTTL) < 0) return -1;
+      }
+      if (tDecodeI8(pDecoder, &pReq->updateComment) < 0) return -1;
+      if (pReq->updateComment) {
+        if (tDecodeCStr(pDecoder, &pReq->newComment) < 0) return -1;
+      }
+      break;
+    default:
+      break;
+  }
+
+  tEndDecode(pDecoder);
+  return 0;
+}
+
+int32_t tEncodeSVAlterTbRsp(SEncoder *pEncoder, const SVAlterTbRsp *pRsp) {
+  if (tStartEncode(pEncoder) < 0) return -1;
+  if (tEncodeI32(pEncoder, pRsp->code) < 0) return -1;
+  tEndEncode(pEncoder);
+  return 0;
+}
+
+int32_t tDecodeSVAlterTbRsp(SDecoder *pDecoder, SVAlterTbRsp *pRsp) {
+  if (tStartDecode(pDecoder) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pRsp->code) < 0) return -1;
+  tEndDecode(pDecoder);
+  return 0;
+}
diff --git a/source/dnode/mnode/impl/src/mndStb.c b/source/dnode/mnode/impl/src/mndStb.c
index e02d629c12..5a834f4d33 100644
--- a/source/dnode/mnode/impl/src/mndStb.c
+++ b/source/dnode/mnode/impl/src/mndStb.c
@@ -383,9 +383,10 @@ static void *mndBuildVCreateStbReq(SMnode *pMnode, SVgObj *pVgroup, SStbObj *pSt
   req.suid = pStb->uid;
   req.rollup = pStb->ast1Len > 0 ? 1 : 0;
   req.schema.nCols = pStb->numOfColumns;
-  req.schema.sver = 0;
+  req.schema.sver = pStb->version;
   req.schema.pSchema = pStb->pColumns;
   req.schemaTag.nCols = pStb->numOfTags;
+  req.schemaTag.nCols = 0;
   req.schemaTag.pSchema = pStb->pTags;
 
   if (req.rollup) {
diff --git a/source/dnode/vnode/src/inc/vnodeInt.h b/source/dnode/vnode/src/inc/vnodeInt.h
index c9d1a0e06e..a217a46036 100644
--- a/source/dnode/vnode/src/inc/vnodeInt.h
+++ b/source/dnode/vnode/src/inc/vnodeInt.h
@@ -79,6 +79,7 @@ int             metaClose(SMeta* pMeta);
 int             metaBegin(SMeta* pMeta);
 int             metaCommit(SMeta* pMeta);
 int             metaCreateSTable(SMeta* pMeta, int64_t version, SVCreateStbReq* pReq);
+int             metaAlterSTable(SMeta* pMeta, int64_t version, SVCreateStbReq* pReq);
 int             metaDropSTable(SMeta* pMeta, int64_t verison, SVDropStbReq* pReq);
 int             metaCreateTable(SMeta* pMeta, int64_t version, SVCreateTbReq* pReq);
 int             metaDropTable(SMeta* pMeta, int64_t version, SVDropTbReq* pReq);
diff --git a/source/dnode/vnode/src/meta/metaTable.c b/source/dnode/vnode/src/meta/metaTable.c
index d666bd22c1..e5377d543a 100644
--- a/source/dnode/vnode/src/meta/metaTable.c
+++ b/source/dnode/vnode/src/meta/metaTable.c
@@ -131,6 +131,75 @@ _err:
   return -1;
 }
 
+int metaAlterSTable(SMeta *pMeta, int64_t version, SVCreateStbReq *pReq) {
+  SMetaEntry  oStbEntry = {0};
+  SMetaEntry  nStbEntry = {0};
+  TDBC       *pUidIdxc = NULL;
+  TDBC       *pTbDbc = NULL;
+  const void *pData;
+  int         nData;
+  int64_t     oversion;
+  SDecoder    dc = {0};
+  int32_t     ret;
+  int32_t     c;
+
+  tdbDbcOpen(pMeta->pUidIdx, &pUidIdxc, &pMeta->txn);
+  ret = tdbDbcMoveTo(pUidIdxc, &pReq->suid, sizeof(tb_uid_t), &c);
+  if (ret < 0 || c) {
+    ASSERT(0);
+    return -1;
+  }
+
+  ret = tdbDbcGet(pUidIdxc, NULL, NULL, &pData, &nData);
+  if (ret < 0) {
+    ASSERT(0);
+    return -1;
+  }
+
+  oversion = *(int64_t *)pData;
+
+  tdbDbcOpen(pMeta->pTbDb, &pTbDbc, &pMeta->txn);
+  ret = tdbDbcMoveTo(pTbDbc, &((STbDbKey){.uid = pReq->suid, .version = oversion}), sizeof(STbDbKey), &c);
+  ASSERT(ret == 0 && c == 0);
+
+  ret = tdbDbcGet(pTbDbc, NULL, NULL, &pData, &nData);
+  ASSERT(ret == 0);
+
+  tDecoderInit(&dc, pData, nData);
+  metaDecodeEntry(&dc, &oStbEntry);
+
+  nStbEntry.version = version;
+  nStbEntry.type = TSDB_SUPER_TABLE;
+  nStbEntry.uid = pReq->suid;
+  nStbEntry.name = pReq->name;
+  nStbEntry.stbEntry.schema = pReq->schema;
+  nStbEntry.stbEntry.schemaTag = pReq->schemaTag;
+
+  metaWLock(pMeta);
+  // compare two entry
+  if (oStbEntry.stbEntry.schema.sver != pReq->schema.sver) {
+    if (oStbEntry.stbEntry.schema.nCols != pReq->schema.nCols) {
+      metaSaveToSkmDb(pMeta, &nStbEntry);
+    }
+  }
+
+  // if (oStbEntry.stbEntry.schemaTag.sver != pReq->schemaTag.sver) {
+  //   // change tag schema
+  // }
+
+  // update table.db
+  metaSaveToTbDb(pMeta, &nStbEntry);
+
+  // update uid index
+  tdbDbcUpsert(pUidIdxc, &pReq->suid, sizeof(tb_uid_t), &version, sizeof(version), 0);
+
+  metaULock(pMeta);
+  tDecoderClear(&dc);
+  tdbDbcClose(pTbDbc);
+  tdbDbcClose(pUidIdxc);
+  return 0;
+}
+
 int metaCreateTable(SMeta *pMeta, int64_t version, SVCreateTbReq *pReq) {
   SMetaEntry  me = {0};
   SMetaReader mr = {0};
diff --git a/source/dnode/vnode/src/tq/tqRead.c b/source/dnode/vnode/src/tq/tqRead.c
index 996d789e24..8fbd1e24e1 100644
--- a/source/dnode/vnode/src/tq/tqRead.c
+++ b/source/dnode/vnode/src/tq/tqRead.c
@@ -91,7 +91,7 @@ int32_t tqRetrieveDataBlock(SArray** ppCols, STqReadHandle* pHandle, uint64_t* p
   // TODO set to real sversion
   *pUid = 0;
 
-  int32_t sversion = 0;
+  int32_t sversion = 1;
   if (pHandle->sver != sversion || pHandle->cachedSchemaUid != pHandle->msgIter.suid) {
     pHandle->pSchema = metaGetTbTSchema(pHandle->pVnodeMeta, pHandle->msgIter.uid, sversion);
 
diff --git a/source/dnode/vnode/src/tsdb/tsdbCommit.c b/source/dnode/vnode/src/tsdb/tsdbCommit.c
index d180799e58..76d5c3cb3a 100644
--- a/source/dnode/vnode/src/tsdb/tsdbCommit.c
+++ b/source/dnode/vnode/src/tsdb/tsdbCommit.c
@@ -465,7 +465,7 @@ static int tsdbCreateCommitIters(SCommitH *pCommith) {
     pTbData = (STbData *)pNode->pData;
 
     pCommitIter = pCommith->iters + i;
-    pTSchema = metaGetTbTSchema(REPO_META(pRepo), pTbData->uid, 0);  // TODO: schema version
+    pTSchema = metaGetTbTSchema(REPO_META(pRepo), pTbData->uid, 1);  // TODO: schema version
 
     if (pTSchema) {
       pCommitIter->pIter = tSkipListCreateIter(pTbData->pData);
@@ -912,7 +912,7 @@ static int tsdbMoveBlkIdx(SCommitH *pCommith, SBlockIdx *pIdx) {
   while (bidx < nBlocks) {
     if (!pTSchema && !tsdbCommitIsSameFile(pCommith, bidx)) {
       // Set commit table
-      pTSchema = metaGetTbTSchema(REPO_META(pTsdb), pIdx->uid, 0);  // TODO: schema version
+      pTSchema = metaGetTbTSchema(REPO_META(pTsdb), pIdx->uid, 1);  // TODO: schema version
       if (!pTSchema) {
         terrno = TSDB_CODE_OUT_OF_MEMORY;
         return -1;
diff --git a/source/dnode/vnode/src/tsdb/tsdbRead.c b/source/dnode/vnode/src/tsdb/tsdbRead.c
index 927babc26c..46df163f3e 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead.c
@@ -490,7 +490,7 @@ tsdbReaderT* tsdbQueryTables(SVnode* pVnode, SQueryTableDataCond* pCond, STableG
 
   STableCheckInfo* pCheckInfo = taosArrayGet(pTsdbReadHandle->pTableCheckInfo, 0);
 
-  pTsdbReadHandle->pSchema = metaGetTbTSchema(pVnode->pMeta, pCheckInfo->tableId, 0);
+  pTsdbReadHandle->pSchema = metaGetTbTSchema(pVnode->pMeta, pCheckInfo->tableId, 1);
   int32_t  numOfCols = taosArrayGetSize(pTsdbReadHandle->suppInfo.defaultLoadColumn);
   int16_t* ids = pTsdbReadHandle->suppInfo.defaultLoadColumn->pData;
 
@@ -1618,7 +1618,7 @@ static int32_t mergeTwoRowFromMem(STsdbReadHandle* pTsdbReadHandle, int32_t capa
   if (pSchema1 == NULL) {
     // pSchema1 = metaGetTbTSchema(REPO_META(pTsdbReadHandle->pTsdb), uid, TD_ROW_SVER(row1));
     // TODO: use the real schemaVersion
-    pSchema1 = metaGetTbTSchema(REPO_META(pTsdbReadHandle->pTsdb), uid, 0);
+    pSchema1 = metaGetTbTSchema(REPO_META(pTsdbReadHandle->pTsdb), uid, 1);
   }
 
 #ifdef TD_DEBUG_PRINT_ROW
@@ -1637,7 +1637,7 @@ static int32_t mergeTwoRowFromMem(STsdbReadHandle* pTsdbReadHandle, int32_t capa
     if (pSchema2 == NULL) {
       // pSchema2 = metaGetTbTSchema(REPO_META(pTsdbReadHandle->pTsdb), uid, TD_ROW_SVER(row2));
       // TODO: use the real schemaVersion
-      pSchema2 = metaGetTbTSchema(REPO_META(pTsdbReadHandle->pTsdb), uid, 0);
+      pSchema2 = metaGetTbTSchema(REPO_META(pTsdbReadHandle->pTsdb), uid, 1);
     }
     if (isRow2DataRow) {
       numOfColsOfRow2 = schemaNCols(pSchema2);
@@ -2755,7 +2755,7 @@ static int tsdbReadRowsFromCache(STableCheckInfo* pCheckInfo, TSKEY maxKey, int
 
     win->ekey = key;
     if (rv != TD_ROW_SVER(row)) {
-      pSchema = metaGetTbTSchema(REPO_META(pTsdbReadHandle->pTsdb), pCheckInfo->tableId, 0);
+      pSchema = metaGetTbTSchema(REPO_META(pTsdbReadHandle->pTsdb), pCheckInfo->tableId, 1);
       rv = TD_ROW_SVER(row);
     }
     numOfRows += mergeTwoRowFromMem(pTsdbReadHandle, maxRowsToRead, &curRows, row, NULL, numOfCols, pCheckInfo->tableId,
@@ -3877,7 +3877,7 @@ int32_t tsdbQuerySTableByTagCond(void* pMeta, uint64_t uid, TSKEY skey, const ch
 
   // NOTE: not add ref count for super table
   SArray*         res = taosArrayInit(8, sizeof(STableKeyInfo));
-  SSchemaWrapper* pTagSchema = metaGetTableSchema(pMeta, uid, 0, true);
+  SSchemaWrapper* pTagSchema = metaGetTableSchema(pMeta, uid, 1, true);
 
   // no tags and tbname condition, all child tables of this stable are involved
   if (tbnameCond == NULL && (pTagCond == NULL || len == 0)) {
diff --git a/source/dnode/vnode/src/tsdb/tsdbSma.c b/source/dnode/vnode/src/tsdb/tsdbSma.c
index e878668654..1589513110 100644
--- a/source/dnode/vnode/src/tsdb/tsdbSma.c
+++ b/source/dnode/vnode/src/tsdb/tsdbSma.c
@@ -2084,7 +2084,7 @@ static int32_t tsdbExecuteRSma(STsdb *pTsdb, const void *pMsg, int32_t inputType
 
   if (inputType == STREAM_DATA_TYPE_SUBMIT_BLOCK) {
     // TODO: use the proper schema instead of 0, and cache STSchema in cache
-    STSchema *pTSchema = metaGetTbTSchema(pTsdb->pVnode->pMeta, suid, 0);
+    STSchema *pTSchema = metaGetTbTSchema(pTsdb->pVnode->pMeta, suid, 1);
     if (!pTSchema) {
       terrno = TSDB_CODE_TDB_IVD_TB_SCHEMA_VERSION;
       return TSDB_CODE_FAILED;
diff --git a/source/dnode/vnode/src/vnd/vnodeSvr.c b/source/dnode/vnode/src/vnd/vnodeSvr.c
index f638ac056a..d4363f1ea0 100644
--- a/source/dnode/vnode/src/vnd/vnodeSvr.c
+++ b/source/dnode/vnode/src/vnd/vnodeSvr.c
@@ -16,7 +16,7 @@
 #include "vnd.h"
 
 static int vnodeProcessCreateStbReq(SVnode *pVnode, int64_t version, void *pReq, int len, SRpcMsg *pRsp);
-static int vnodeProcessAlterStbReq(SVnode *pVnode, void *pReq, int32_t len, SRpcMsg *pRsp);
+static int vnodeProcessAlterStbReq(SVnode *pVnode, int64_t version, void *pReq, int32_t len, SRpcMsg *pRsp);
 static int vnodeProcessDropStbReq(SVnode *pVnode, int64_t version, void *pReq, int32_t len, SRpcMsg *pRsp);
 static int vnodeProcessCreateTbReq(SVnode *pVnode, int64_t version, void *pReq, int len, SRpcMsg *pRsp);
 static int vnodeProcessAlterTbReq(SVnode *pVnode, void *pReq, int32_t len, SRpcMsg *pRsp);
@@ -73,7 +73,7 @@ int vnodeProcessWriteReq(SVnode *pVnode, SRpcMsg *pMsg, int64_t version, SRpcMsg
       if (vnodeProcessCreateStbReq(pVnode, version, pReq, len, pRsp) < 0) goto _err;
       break;
     case TDMT_VND_ALTER_STB:
-      if (vnodeProcessAlterStbReq(pVnode, pReq, len, pRsp) < 0) goto _err;
+      if (vnodeProcessAlterStbReq(pVnode, version, pReq, len, pRsp) < 0) goto _err;
       break;
     case TDMT_VND_DROP_STB:
       if (vnodeProcessDropStbReq(pVnode, version, pReq, len, pRsp) < 0) goto _err;
@@ -397,20 +397,32 @@ _exit:
   return rcode;
 }
 
-static int vnodeProcessAlterStbReq(SVnode *pVnode, void *pReq, int32_t len, SRpcMsg *pRsp) {
-  // ASSERT(0);
-#if 0
-  SVCreateTbReq vAlterTbReq = {0};
-  vTrace("vgId:%d, process alter stb req", TD_VID(pVnode));
-  tDeserializeSVCreateTbReq(pReq, &vAlterTbReq);
-  // TODO: to encapsule a free API
-  taosMemoryFree(vAlterTbReq.stbCfg.pSchema);
-  taosMemoryFree(vAlterTbReq.stbCfg.pTagSchema);
-  if (vAlterTbReq.stbCfg.pRSmaParam) {
-    taosMemoryFree(vAlterTbReq.stbCfg.pRSmaParam);
+static int vnodeProcessAlterStbReq(SVnode *pVnode, int64_t version, void *pReq, int32_t len, SRpcMsg *pRsp) {
+  SVCreateStbReq req = {0};
+  SDecoder       dc = {0};
+
+  pRsp->msgType = TDMT_VND_ALTER_STB_RSP;
+  pRsp->code = TSDB_CODE_SUCCESS;
+  pRsp->pCont = NULL;
+  pRsp->contLen = 0;
+
+  tDecoderInit(&dc, pReq, len);
+
+  // decode req
+  if (tDecodeSVCreateStbReq(&dc, &req) < 0) {
+    terrno = TSDB_CODE_INVALID_MSG;
+    tDecoderClear(&dc);
+    return -1;
   }
-  taosMemoryFree(vAlterTbReq.name);
-#endif
+
+  if (metaAlterSTable(pVnode->pMeta, version, &req) < 0) {
+    pRsp->code = terrno;
+    tDecoderClear(&dc);
+    return -1;
+  }
+
+  tDecoderClear(&dc);
+
   return 0;
 }
 
@@ -513,7 +525,7 @@ static int vnodeDebugPrintSingleSubmitMsg(SMeta *pMeta, SSubmitBlk *pBlock, SSub
     if (pSchema) {
       taosMemoryFreeClear(pSchema);
     }
-    pSchema = metaGetTbTSchema(pMeta, msgIter->suid, 0);  // TODO: use the real schema
+    pSchema = metaGetTbTSchema(pMeta, msgIter->suid, 1);  // TODO: use the real schema
     if (pSchema) {
       suid = msgIter->suid;
     }
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index 1639abceba..9773b69ee7 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -3725,7 +3725,7 @@ static int32_t buildNormalTableBatchReq(int32_t acctId, const SCreateTableStmt*
   req.type = TD_NORMAL_TABLE;
   req.name = strdup(pStmt->tableName);
   req.ntb.schema.nCols = LIST_LENGTH(pStmt->pCols);
-  req.ntb.schema.sver = 0;
+  req.ntb.schema.sver = 1;
   req.ntb.schema.pSchema = taosMemoryCalloc(req.ntb.schema.nCols, sizeof(SSchema));
   if (NULL == req.name || NULL == req.ntb.schema.pSchema) {
     destroyCreateTbReq(&req);
diff --git a/source/util/test/CMakeLists.txt b/source/util/test/CMakeLists.txt
index 0d16a2129a..c1053ce7de 100644
--- a/source/util/test/CMakeLists.txt
+++ b/source/util/test/CMakeLists.txt
@@ -33,13 +33,13 @@ ENDIF()
 
 INCLUDE_DIRECTORIES(${TD_SOURCE_DIR}/src/util/inc)
 
-# freelistTest
-add_executable(freelistTest "")
-target_sources(freelistTest
-    PRIVATE
-    "freelistTest.cpp"
-)
-target_link_libraries(freelistTest os util gtest gtest_main)
+# # freelistTest
+# add_executable(freelistTest "")
+# target_sources(freelistTest
+#     PRIVATE
+#     "freelistTest.cpp"
+# )
+# target_link_libraries(freelistTest os util gtest gtest_main)
 
 # # encodeTest
 # add_executable(encodeTest "encodeTest.cpp")
diff --git a/source/util/test/freelistTest.cpp b/source/util/test/freelistTest.cpp
deleted file mode 100644
index a445a16ad3..0000000000
--- a/source/util/test/freelistTest.cpp
+++ /dev/null
@@ -1,17 +0,0 @@
-#include <gtest/gtest.h>
-
-#include "tfreelist.h"
-
-TEST(TD_UTIL_FREELIST_TEST, simple_test) {
-  SFreeList fl;
-
-  tFreeListInit(&fl);
-
-  for (size_t i = 0; i < 1000; i++) {
-    void *ptr = NULL;
-    TFL_MALLOC(ptr, void*, 1024, &fl);
-    GTEST_ASSERT_NE(ptr, nullptr);
-  }
-
-  tFreeListClear(&fl);
-}