diff --git a/include/client/taos.h b/include/client/taos.h
index 626264d94e..5f7cd12963 100644
--- a/include/client/taos.h
+++ b/include/client/taos.h
@@ -204,12 +204,19 @@ DLL_EXPORT void taos_close_stream(TAOS_STREAM *tstr);
 DLL_EXPORT int taos_load_table_info(TAOS *taos, const char* tableNameList);
 DLL_EXPORT TAOS_RES* taos_schemaless_insert(TAOS* taos, char* lines[], int numLines, int protocol, int precision);
 
+/* --------------------------TMQ INTERFACE------------------------------- */
+typedef struct tmq_resp_err_t tmq_resp_err_t;
+typedef struct tmq_topic_vgroup_t tmq_topic_vgroup_t;
+typedef struct tmq_topic_vgroup_list_t tmq_topic_vgroup_list_t;
+
+typedef void (tmq_commit_cb(tmq_t*, tmq_resp_err_t, tmq_topic_vgroup_list_t*, void* param));
 DLL_EXPORT tmq_list_t* tmq_list_new();
 DLL_EXPORT int32_t tmq_list_append(tmq_list_t*, char*);
 
 DLL_EXPORT tmq_conf_t* tmq_conf_new();
 
 DLL_EXPORT int32_t tmq_conf_set(tmq_conf_t* conf, const char* key, const char* value);
+DLL_EXPORT void tmq_conf_set_offset_commit_cb(tmq_conf_t* conf, tmq_commit_cb* cb);
 
 DLL_EXPORT TAOS_RES *taos_create_topic(TAOS* taos, const char* name, const char* sql, int sqlLen);
 
@@ -217,13 +224,7 @@ DLL_EXPORT tmq_t* taos_consumer_new(void* conn, tmq_conf_t* conf, char* errstr,
 
 DLL_EXPORT TAOS_RES* tmq_subscribe(tmq_t* tmq, tmq_list_t* topic_list);
 
-DLL_EXPORT tmq_message_t* tmq_consume_poll(tmq_t* tmq, int64_t blocking_time);
-
-DLL_EXPORT int32_t tmq_topic_num(tmq_message_t* msg);
-DLL_EXPORT char* tmq_get_topic(tmq_message_topic_t* msg);
-DLL_EXPORT int32_t tmq_get_vgId(tmq_message_topic_t* msg);
-DLL_EXPORT tmq_message_tb_t* tmq_get_next_tb(tmq_message_topic_t* msg, tmq_tb_iter_t* iter);
-DLL_EXPORT tmq_message_col_t* tmq_get_next_col(tmq_message_tb_t* msg, tmq_col_iter_t* iter);
+DLL_EXPORT tmq_message_t* tmq_consumer_poll(tmq_t* tmq, int64_t blocking_time);
 
 #ifdef __cplusplus
 }
diff --git a/include/util/taoserror.h b/include/util/taoserror.h
index 8f49fce558..50af44a94c 100644
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@@ -254,6 +254,7 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_MND_TOPIC_OPTION_UNCHNAGED    TAOS_DEF_ERROR_CODE(0, 0x03E5)
 #define TSDB_CODE_MND_NAME_CONFLICT_WITH_STB    TAOS_DEF_ERROR_CODE(0, 0x03E6)
 #define TSDB_CODE_MND_CONSUMER_NOT_EXIST        TAOS_DEF_ERROR_CODE(0, 0x03E7)
+#define TSDB_CODE_MND_UNSUPPORTED_TOPIC         TAOS_DEF_ERROR_CODE(0, 0x03E7)
 
 // dnode
 #define TSDB_CODE_DND_ACTION_IN_PROGRESS        TAOS_DEF_ERROR_CODE(0, 0x0400)
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index a8e30bfd52..3b71805e14 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -280,23 +280,21 @@ typedef struct SMqClientTopic {
   SArray* vgs;    //SArray<SMqClientVg>
 } SMqClientTopic;
 
-typedef struct tmq_resp_err_t {
+struct tmq_resp_err_t {
   int32_t code;
-} tmq_resp_err_t;
+};
 
-typedef struct tmq_topic_vgroup_t {
+struct tmq_topic_vgroup_t {
   char*   topic;
   int32_t vgId;
   int64_t commitOffset;
-} tmq_topic_vgroup_t;
+};
 
-typedef struct tmq_topic_vgroup_list_t {
+struct tmq_topic_vgroup_list_t {
   int32_t cnt;
   int32_t size;
   tmq_topic_vgroup_t* elems;
-} tmq_topic_vgroup_list_t;
-
-typedef void (tmq_commit_cb(tmq_t*, tmq_resp_err_t, tmq_topic_vgroup_list_t*, void* param));
+};
 
 struct tmq_conf_t {
   char           clientId[256];
@@ -677,8 +675,7 @@ int32_t tmq_ask_ep_cb(void* param, const SDataBuf* pMsg, int32_t code) {
   SMqAskEpCbParam* pParam = (SMqAskEpCbParam*)param;
   tmq_t* tmq = pParam->tmq;
   if (code != 0) {
-
-    printf("exit wait %d\n", pParam->wait);
+    printf("get topic endpoint error, not ready, wait:%d\n", pParam->wait);
     if (pParam->wait) {
       tsem_post(&tmq->rspSem);
     }
@@ -769,7 +766,7 @@ END:
     return 0;
 }
 
-tmq_message_t* tmq_consume_poll(tmq_t* tmq, int64_t blocking_time) {
+tmq_message_t* tmq_consumer_poll(tmq_t* tmq, int64_t blocking_time) {
   int64_t status = atomic_load_64(&tmq->status);
   tmqAsyncAskEp(tmq, status == 0 || taosArrayGetSize(tmq->clientTopics));
 
diff --git a/source/client/test/clientTests.cpp b/source/client/test/clientTests.cpp
index eec6a00405..8cca1e6152 100644
--- a/source/client/test/clientTests.cpp
+++ b/source/client/test/clientTests.cpp
@@ -562,9 +562,9 @@ TEST(testCase, insert_test) {
   taos_free_result(pRes);
   taos_close(pConn);
 }
-
 #endif
-TEST(testCase, create_topic_Test) {
+
+TEST(testCase, create_topic_ctb_Test) {
   TAOS* pConn = taos_connect("localhost", "root", "taosdata", NULL, 0);
   assert(pConn != NULL);
 
@@ -583,13 +583,37 @@ TEST(testCase, create_topic_Test) {
   taos_free_result(pRes);
 
   char* sql = "select * from tu";
-  pRes = taos_create_topic(pConn, "test_topic_1", sql, strlen(sql));
+  pRes = taos_create_topic(pConn, "test_ctb_topic_1", sql, strlen(sql));
   taos_free_result(pRes);
   taos_close(pConn);
 }
 
+TEST(testCase, create_topic_stb_Test) {
+  TAOS* pConn = taos_connect("localhost", "root", "taosdata", NULL, 0);
+  assert(pConn != NULL);
 
-TEST(testCase, tmq_subscribe_Test) {
+  TAOS_RES* pRes = taos_query(pConn, "use abc1");
+  if (taos_errno(pRes) != 0) {
+    printf("error in use db, reason:%s\n", taos_errstr(pRes));
+  }
+  //taos_free_result(pRes);
+
+  TAOS_FIELD* pFields = taos_fetch_fields(pRes);
+  ASSERT_TRUE(pFields == nullptr);
+
+  int32_t numOfFields = taos_num_fields(pRes);
+  ASSERT_EQ(numOfFields, 0);
+
+  taos_free_result(pRes);
+
+  char* sql = "select * from st1";
+  pRes = taos_create_topic(pConn, "test_stb_topic_1", sql, strlen(sql));
+  taos_free_result(pRes);
+  taos_close(pConn);
+}
+
+#if 0
+TEST(testCase, tmq_subscribe_ctb_Test) {
   TAOS* pConn = taos_connect("localhost", "root", "taosdata", NULL, 0);
   assert(pConn != NULL);
 
@@ -604,7 +628,32 @@ TEST(testCase, tmq_subscribe_Test) {
   tmq_t* tmq = taos_consumer_new(pConn, conf, NULL, 0);
 
   tmq_list_t* topic_list = tmq_list_new();
-  tmq_list_append(topic_list, "test_topic_1");
+  tmq_list_append(topic_list, "test_ctb_topic_1");
+  tmq_subscribe(tmq, topic_list);
+
+  while (1) {
+    tmq_message_t* msg = tmq_consumer_poll(tmq, 1000);
+    //printf("get msg\n");
+    //if (msg == NULL) break;
+  }
+}
+
+TEST(testCase, tmq_subscribe_stb_Test) {
+  TAOS* pConn = taos_connect("localhost", "root", "taosdata", NULL, 0);
+  assert(pConn != NULL);
+
+  TAOS_RES* pRes = taos_query(pConn, "use abc1");
+  if (taos_errno(pRes) != 0) {
+    printf("error in use db, reason:%s\n", taos_errstr(pRes));
+  }
+  taos_free_result(pRes);
+
+  tmq_conf_t* conf = tmq_conf_new();
+  tmq_conf_set(conf, "group.id", "tg2");
+  tmq_t* tmq = taos_consumer_new(pConn, conf, NULL, 0);
+
+  tmq_list_t* topic_list = tmq_list_new();
+  tmq_list_append(topic_list, "test_stb_topic_1");
   tmq_subscribe(tmq, topic_list);
 
   while (1) {
@@ -613,6 +662,7 @@ TEST(testCase, tmq_subscribe_Test) {
     //if (msg == NULL) break;
   }
 }
+#endif
 
 TEST(testCase, tmq_consume_Test) {
 }
diff --git a/source/dnode/mnode/impl/src/mndSubscribe.c b/source/dnode/mnode/impl/src/mndSubscribe.c
index 0c0d8bd349..fa8c78f4b1 100644
--- a/source/dnode/mnode/impl/src/mndSubscribe.c
+++ b/source/dnode/mnode/impl/src/mndSubscribe.c
@@ -96,7 +96,7 @@ static int32_t mndProcessGetSubEpReq(SMnodeMsg *pMsg) {
     bool found = 0;
     bool changed = 0;
     for (int32_t j = 0; j < taosArrayGetSize(pSub->availConsumer); j++) {
-      if (*(int64_t*)taosArrayGet(pSub->availConsumer, j) == consumerId) {
+      if (*(int64_t *)taosArrayGet(pSub->availConsumer, j) == consumerId) {
         found = 1;
         break;
       }
@@ -105,16 +105,13 @@ static int32_t mndProcessGetSubEpReq(SMnodeMsg *pMsg) {
       taosArrayPush(pSub->availConsumer, &consumerId);
     }
 
-    int32_t          assignedSz = taosArrayGetSize(pSub->assigned);
+    int32_t assignedSz = taosArrayGetSize(pSub->assigned);
     topicEp.vgs = taosArrayInit(assignedSz, sizeof(SMqSubVgEp));
     for (int32_t j = 0; j < assignedSz; j++) {
       SMqConsumerEp *pCEp = taosArrayGet(pSub->assigned, j);
       if (pCEp->consumerId == consumerId) {
         pCEp->lastConsumerHbTs = currentTs;
-        SMqSubVgEp vgEp = {
-          .epSet = pCEp->epSet,
-          .vgId = pCEp->vgId
-        };
+        SMqSubVgEp vgEp = {.epSet = pCEp->epSet, .vgId = pCEp->vgId};
         taosArrayPush(topicEp.vgs, &vgEp);
         changed = 1;
       }
@@ -123,7 +120,7 @@ static int32_t mndProcessGetSubEpReq(SMnodeMsg *pMsg) {
       taosArrayPush(rsp.topics, &topicEp);
     }
     if (changed || found) {
-      SSdbRaw* pRaw = mndSubActionEncode(pSub);
+      SSdbRaw *pRaw = mndSubActionEncode(pSub);
       sdbSetRawStatus(pRaw, SDB_STATUS_READY);
       sdbWriteNotFree(pMnode->pSdb, pRaw);
     }
@@ -137,7 +134,7 @@ static int32_t mndProcessGetSubEpReq(SMnodeMsg *pMsg) {
   }
   void *abuf = buf;
   tEncodeSMqCMGetSubEpRsp(&abuf, &rsp);
-  //TODO: free rsp
+  // TODO: free rsp
   pMsg->pCont = buf;
   pMsg->contLen = tlen;
   return 0;
@@ -164,9 +161,9 @@ static int32_t mndProcessMqTimerMsg(SMnodeMsg *pMsg) {
   int32_t          sz;
   while (pIter != NULL) {
     for (int i = 0; i < taosArrayGetSize(pSub->assigned); i++) {
-      SMqConsumerEp* pCEp = taosArrayGet(pSub->assigned, i);
-      int64_t consumerId =  pCEp->consumerId;
-      if(pCEp->lastConsumerHbTs != -1 && currentTs - pCEp->lastConsumerHbTs > MND_SUBSCRIBE_REBALANCE_MS) {
+      SMqConsumerEp *pCEp = taosArrayGet(pSub->assigned, i);
+      int64_t        consumerId = pCEp->consumerId;
+      if (pCEp->lastConsumerHbTs != -1 && currentTs - pCEp->lastConsumerHbTs > MND_SUBSCRIBE_REBALANCE_MS) {
         // put consumer into lostConsumer
         taosArrayPush(pSub->lostConsumer, pCEp);
         // put vg into unassgined
@@ -176,7 +173,7 @@ static int32_t mndProcessMqTimerMsg(SMnodeMsg *pMsg) {
         taosArrayRemove(pSub->assigned, i);
         // remove from available consumer
         for (int j = 0; j < taosArrayGetSize(pSub->availConsumer); j++) {
-          if (*(int64_t*)taosArrayGet(pSub->availConsumer, i) == pCEp->consumerId) {
+          if (*(int64_t *)taosArrayGet(pSub->availConsumer, i) == pCEp->consumerId) {
             taosArrayRemove(pSub->availConsumer, j);
             break;
           }
@@ -209,7 +206,7 @@ static int32_t mndProcessMqTimerMsg(SMnodeMsg *pMsg) {
         taosArrayPush(pSub->assigned, pCEp);
         pSub->nextConsumerIdx = (pSub->nextConsumerIdx + 1) % taosArrayGetSize(pSub->availConsumer);
 
-        SMqConsumerObj* pConsumer = mndAcquireConsumer(pMnode, consumerId);
+        SMqConsumerObj *pConsumer = mndAcquireConsumer(pMnode, consumerId);
         pConsumer->epoch++;
         /*SSdbRaw* pConsumerRaw = mndConsumerActionEncode(pConsumer);*/
         /*sdbSetRawStatus(pConsumerRaw, SDB_STATUS_READY);*/
@@ -269,33 +266,50 @@ static int32_t mndProcessMqTimerMsg(SMnodeMsg *pMsg) {
 static int mndInitUnassignedVg(SMnode *pMnode, SMqTopicObj *pTopic, SArray *unassignedVg) {
   // convert phyplan to dag
   SQueryDag *pDag = qStringToDag(pTopic->physicalPlan);
-  SArray    *pArray;
+  SArray    *pArray = NULL;
   SArray    *inner = taosArrayGet(pDag->pSubplans, 0);
   SSubplan  *plan = taosArrayGetP(inner, 0);
+  SSdb      *pSdb = pMnode->pSdb;
+  SVgObj    *pVgroup = NULL;
 
-  plan->execNode.nodeId = 2;
-  SEpSet* pEpSet = &plan->execNode.epset;
+  void *pIter = NULL;
+  while (1) {
+    pIter = sdbFetch(pSdb, SDB_VGROUP, pIter, (void **)&pVgroup);
+    if (pIter == NULL) break;
+    if (pVgroup->dbUid != pTopic->dbUid) continue;
+
+    plan->execNode.nodeId = pVgroup->vgId;
+    plan->execNode.epset = mndGetVgroupEpset(pMnode, pVgroup);
+
+    if (schedulerConvertDagToTaskList(pDag, &pArray) < 0) {
+      terrno = TSDB_CODE_MND_UNSUPPORTED_TOPIC;
+      mError("unsupport topic: %s, sql: %s", pTopic->name, pTopic->sql);
+      return -1;
+    }
+    if (pArray && taosArrayGetSize(pArray) != 1) {
+      terrno = TSDB_CODE_MND_UNSUPPORTED_TOPIC;
+      mError("unsupport topic: %s, sql: %s, plan level: %ld", pTopic->name, pTopic->sql, taosArrayGetSize(pArray));
+      return -1;
+    }
 
-  pEpSet->inUse = 0;
-  addEpIntoEpSet(pEpSet, "localhost", 6030);
-  if (schedulerConvertDagToTaskList(pDag, &pArray) < 0) {
-    return -1;
-  }
-  int32_t sz = taosArrayGetSize(pArray);
-  // convert dag to msg
-  for (int32_t i = 0; i < sz; i++) {
     SMqConsumerEp CEp;
     CEp.status = 0;
     CEp.consumerId = -1;
     CEp.lastConsumerHbTs = CEp.lastVgHbTs = -1;
-    STaskInfo *pTaskInfo = taosArrayGet(pArray, i);
+    STaskInfo *pTaskInfo = taosArrayGet(pArray, 0);
     CEp.epSet = pTaskInfo->addr.epset;
-    
-    /*mDebug("subscribe convert ep %d %s %s %s %s %s\n", CEp.epSet.numOfEps, CEp.epSet.fqdn[0], CEp.epSet.fqdn[1],
-     * CEp.epSet.fqdn[2], CEp.epSet.fqdn[3], CEp.epSet.fqdn[4]);*/
     CEp.vgId = pTaskInfo->addr.nodeId;
+
+    ASSERT(CEp.vgId == pVgroup->vgId);
     CEp.qmsg = strdup(pTaskInfo->msg->msg);
     taosArrayPush(unassignedVg, &CEp);
+    //TODO: free taskInfo
+    taosArrayDestroy(pArray);
+
+    /*SEpSet *pEpSet = &plan->execNode.epset;*/
+    /*pEpSet->inUse = 0;*/
+    /*addEpIntoEpSet(pEpSet, "localhost", 6030);*/
+     
   }
 
   /*qDestroyQueryDag(pDag);*/
@@ -608,7 +622,7 @@ static int32_t mndProcessSubscribeReq(SMnodeMsg *pMsg) {
       }
 
       SMqSubscribeObj *pSub = mndAcquireSubscribe(pMnode, consumerGroup, newTopicName);
-      bool create = false;
+      bool             create = false;
       if (pSub == NULL) {
         mDebug("create new subscription, group: %s, topic %s", consumerGroup, newTopicName);
         pSub = tNewSubscribeObj();
@@ -624,7 +638,10 @@ static int32_t mndProcessSubscribeReq(SMnodeMsg *pMsg) {
         strcpy(pSub->key, key);
         free(key);
         // set unassigned vg
-        mndInitUnassignedVg(pMnode, pTopic, pSub->unassignedVg);
+        if (mndInitUnassignedVg(pMnode, pTopic, pSub->unassignedVg) < 0) {
+          //TODO: free memory
+          return -1;
+        }
         // TODO: disable alter
         create = true;
       }
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index d7fd02422b..4e5246b0a8 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -866,18 +866,16 @@ bool tqNextDataBlock(STqReadHandle* pHandle) {
     if (pHandle->pBlock == NULL) return false;
 
     pHandle->pBlock->uid = htobe64(pHandle->pBlock->uid);
-    if (pHandle->tbUid == pHandle->pBlock->uid) {
+    /*if (pHandle->tbUid == pHandle->pBlock->uid) {*/
+    ASSERT(pHandle->tbIdHash);
+    void* ret = taosHashGet(pHandle->tbIdHash, &pHandle->pBlock->uid, sizeof(int64_t));
+    if (ret != NULL) {
       pHandle->pBlock->tid = htonl(pHandle->pBlock->tid);
       pHandle->pBlock->sversion = htonl(pHandle->pBlock->sversion);
       pHandle->pBlock->dataLen = htonl(pHandle->pBlock->dataLen);
       pHandle->pBlock->schemaLen = htonl(pHandle->pBlock->schemaLen);
       pHandle->pBlock->numOfRows = htons(pHandle->pBlock->numOfRows);
       return true;
-    } else if (pHandle->tbIdHash != NULL) {
-      void* ret = taosHashGet(pHandle->tbIdHash, &pHandle->pBlock->uid, sizeof(int64_t));
-      if (ret != NULL) {
-        return  true;
-      }
     }
   }
   return false;
diff --git a/source/libs/executor/src/executorimpl.c b/source/libs/executor/src/executorimpl.c
index 7b1ef01fb2..e2e2e7c8d5 100644
--- a/source/libs/executor/src/executorimpl.c
+++ b/source/libs/executor/src/executorimpl.c
@@ -5477,7 +5477,7 @@ SOperatorInfo* createStreamScanOperatorInfo(void *streamReadHandle, SArray* pExp
   
   // set the extract column id to streamHandle
   tqReadHandleSetColIdList((STqReadHandle* )streamReadHandle, pColList);
-  tqReadHandleSetTbUid(streamReadHandle, pTableIdList);
+  tqReadHandleSetTbUidList(streamReadHandle, pTableIdList);
 
   pInfo->readerHandle = streamReadHandle;
 
@@ -7776,7 +7776,7 @@ SOperatorInfo* doCreateOperatorTreeNode(SPhyNode* pPhyNode, SExecTaskInfo* pTask
       SScanPhyNode* pScanPhyNode = (SScanPhyNode*)pPhyNode;   // simple child table.
       STableGroupInfo groupInfo = {0};
 
-      int32_t code = doCreateTableGroup(((STqReadHandle*)readerHandle)->pMeta, pScanPhyNode->tableType, pScanPhyNode->uid, &groupInfo, queryId, taskId);
+      int32_t code = doCreateTableGroup(((STqReadHandle*)readerHandle)->pVnodeMeta, pScanPhyNode->tableType, pScanPhyNode->uid, &groupInfo, queryId, taskId);
 
       SArray* pa = taosArrayGetP(groupInfo.pGroupList, 0);
       ASSERT(taosArrayGetSize(groupInfo.pGroupList) == 1);
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index 489fff5d64..ee5bea0ab7 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -254,6 +254,9 @@ TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_FUNC_RETRIEVE,     "Invalid func retriev
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRANS_ALREADY_EXIST,       "Transaction already exists")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_TRANS_NOT_EXIST,           "Transaction not exists")
 
+// mnode-topic
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_UNSUPPORTED_TOPIC,         "Topic with STable not supported yet")
+
 // dnode
 TAOS_DEFINE_ERROR(TSDB_CODE_DND_ACTION_IN_PROGRESS,       "Action in progress")
 TAOS_DEFINE_ERROR(TSDB_CODE_DND_OFFLINE,                  "Dnode is offline")