diff --git a/example/src/tstream.c b/example/src/tstream.c
index 77a002499e..5bd833213d 100644
--- a/example/src/tstream.c
+++ b/example/src/tstream.c
@@ -81,9 +81,10 @@ int32_t create_stream() {
   /*const char* sql = "select min(k), max(k), sum(k) as sum_of_k from st1";*/
   /*const char* sql = "select sum(k) from tu1 interval(10m)";*/
   /*pRes = tmq_create_stream(pConn, "stream1", "out1", sql);*/
-  pRes = taos_query(
-      pConn,
-      "create stream stream1 trigger window_close as select min(k), max(k), sum(k) as sum_of_k from tu1 interval(10m)");
+  pRes =
+      taos_query(pConn,
+                 "create stream stream1 trigger window_close as select _wstartts, min(k), max(k), sum(k) as sum_of_k "
+                 "from tu1 interval(10m)");
   if (taos_errno(pRes) != 0) {
     printf("failed to create stream stream1, reason:%s\n", taos_errstr(pRes));
     return -1;
diff --git a/include/common/tdatablock.h b/include/common/tdatablock.h
index 3a98102661..4d3ad591ce 100644
--- a/include/common/tdatablock.h
+++ b/include/common/tdatablock.h
@@ -54,8 +54,8 @@ SEpSet getEpSet_s(SCorEpSet* pEpSet);
     BMCharPos(bm_, r_) |= (1u << (7u - BitPos(r_))); \
   } while (0)
 
-#define colDataIsNull_var(pColumnInfoData, row) (pColumnInfoData->varmeta.offset[row] == -1)
-#define colDataSetNull_var(pColumnInfoData, row)  (pColumnInfoData->varmeta.offset[row] = -1)
+#define colDataIsNull_var(pColumnInfoData, row)  (pColumnInfoData->varmeta.offset[row] == -1)
+#define colDataSetNull_var(pColumnInfoData, row) (pColumnInfoData->varmeta.offset[row] = -1)
 
 #define BitmapLen(_n) (((_n) + ((1 << NBIT) - 1)) >> NBIT)
 
@@ -63,16 +63,15 @@ SEpSet getEpSet_s(SCorEpSet* pEpSet);
 
 #define colDataGetNumData(p1_, r_) ((p1_)->pData + ((r_) * (p1_)->info.bytes))
 // SColumnInfoData, rowNumber
-#define colDataGetData(p1_, r_)                                        \
-  ((IS_VAR_DATA_TYPE((p1_)->info.type)) ?  colDataGetVarData(p1_, r_)  \
-                                        :  colDataGetNumData(p1_, r_))
+#define colDataGetData(p1_, r_) \
+  ((IS_VAR_DATA_TYPE((p1_)->info.type)) ? colDataGetVarData(p1_, r_) : colDataGetNumData(p1_, r_))
 
 static FORCE_INLINE bool colDataIsNull_s(const SColumnInfoData* pColumnInfoData, uint32_t row) {
-  if (pColumnInfoData->info.type == TSDB_DATA_TYPE_JSON){
-    if(colDataIsNull_var(pColumnInfoData, row)){
+  if (pColumnInfoData->info.type == TSDB_DATA_TYPE_JSON) {
+    if (colDataIsNull_var(pColumnInfoData, row)) {
       return true;
     }
-    char *data = colDataGetVarData(pColumnInfoData, row);
+    char* data = colDataGetVarData(pColumnInfoData, row);
     return (*data == TSDB_DATA_TYPE_NULL);
   }
 
@@ -80,7 +79,7 @@ static FORCE_INLINE bool colDataIsNull_s(const SColumnInfoData* pColumnInfoData,
     return false;
   }
 
-  if (pColumnInfoData->info.type== TSDB_DATA_TYPE_VARCHAR || pColumnInfoData->info.type == TSDB_DATA_TYPE_NCHAR) {
+  if (pColumnInfoData->info.type == TSDB_DATA_TYPE_VARCHAR || pColumnInfoData->info.type == TSDB_DATA_TYPE_NCHAR) {
     return colDataIsNull_var(pColumnInfoData, row);
   } else {
     if (pColumnInfoData->nullbitmap == NULL) {
@@ -132,7 +131,7 @@ static FORCE_INLINE void colDataAppendNULL(SColumnInfoData* pColumnInfoData, uin
 static FORCE_INLINE void colDataAppendNNULL(SColumnInfoData* pColumnInfoData, uint32_t start, size_t nRows) {
   if (IS_VAR_DATA_TYPE(pColumnInfoData->info.type)) {
     for (int32_t i = start; i < start + nRows; ++i) {
-      colDataSetNull_var(pColumnInfoData,i);  // it is a null value of VAR type.
+      colDataSetNull_var(pColumnInfoData, i);  // it is a null value of VAR type.
     }
   } else {
     for (int32_t i = start; i < start + nRows; ++i) {
@@ -228,6 +227,8 @@ void blockDebugShowData(const SArray* dataBlocks);
 int32_t buildSubmitReqFromDataBlock(SSubmitReq** pReq, const SArray* pDataBlocks, STSchema* pTSchema, int32_t vgId,
                                  tb_uid_t uid, tb_uid_t suid);
 
+SSubmitReq* tdBlockToSubmit(const SArray* pBlocks, const STSchema* pSchema);
+
 static FORCE_INLINE int32_t blockGetEncodeSize(const SSDataBlock* pBlock) {
   return blockDataGetSerialMetaSize(pBlock) + blockDataGetSize(pBlock);
 }
@@ -241,10 +242,10 @@ static FORCE_INLINE int32_t blockCompressColData(SColumnInfoData* pColRes, int32
 
 static FORCE_INLINE void blockCompressEncode(const SSDataBlock* pBlock, char* data, int32_t* dataLen, int32_t numOfCols,
                                              int8_t needCompress) {
-  int32_t* actualLen = (int32_t*) data;
+  int32_t* actualLen = (int32_t*)data;
   data += sizeof(int32_t);
 
-  uint64_t* groupId = (uint64_t*) data;
+  uint64_t* groupId = (uint64_t*)data;
   data += sizeof(uint64_t);
 
   int32_t* colSizes = (int32_t*)data;
diff --git a/include/common/tdataformat.h b/include/common/tdataformat.h
index 36286d5944..11d0f34c45 100644
--- a/include/common/tdataformat.h
+++ b/include/common/tdataformat.h
@@ -61,11 +61,11 @@ extern "C" {
 // ----------------- TSDB COLUMN DEFINITION
 #pragma pack(push, 1)
 typedef struct {
-  col_id_t colId;        // column ID(start from PRIMARYKEY_TIMESTAMP_COL_ID(1))
-  int32_t  type : 8;     // column type
-  int32_t  bytes : 24;   // column bytes (0~16M)
-  int32_t  flags : 8;    // flags: 0 no index, 1 SCHEMA_SMA_ON, 2 SCHEMA_IDX_ON
-  int32_t  offset : 24;  // point offset in STpRow after the header part.
+  col_id_t colId;   // column ID(start from PRIMARYKEY_TIMESTAMP_COL_ID(1))
+  int8_t   type;    // column type
+  int8_t   flags;   // flags: 0 no index, 1 SCHEMA_SMA_ON, 2 SCHEMA_IDX_ON
+  int32_t  bytes;   // column bytes (0~16M)
+  int32_t  offset;  // point offset in STpRow after the header part.
 } STColumn;
 #pragma pack(pop)
 
diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index 7e610553fa..af05b52362 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -245,6 +245,8 @@ int32_t tInitSubmitMsgIter(const SSubmitReq* pMsg, SSubmitMsgIter* pIter);
 int32_t tGetSubmitMsgNext(SSubmitMsgIter* pIter, SSubmitBlk** pPBlock);
 int32_t tInitSubmitBlkIter(SSubmitMsgIter* pMsgIter, SSubmitBlk* pBlock, SSubmitBlkIter* pIter);
 STSRow* tGetSubmitBlkNext(SSubmitBlkIter* pIter);
+// for debug
+int32_t tPrintFixedSchemaSubmitReq(const SSubmitReq* pReq, STSchema* pSchema);
 
 typedef struct {
   int32_t index;  // index of failed block in submit blocks
@@ -2130,7 +2132,7 @@ static FORCE_INLINE int32_t tDecodeSSchemaWrapper(SCoder* pDecoder, SSchemaWrapp
   if (tDecodeI32v(pDecoder, &pSW->nCols) < 0) return -1;
   if (tDecodeI32v(pDecoder, &pSW->sver) < 0) return -1;
 
-  pSW->pSchema = (SSchema*)tCoderMalloc(pDecoder, sizeof(SSchema) * pSW->nCols);
+  pSW->pSchema = (SSchema*)taosMemoryCalloc(pSW->nCols, sizeof(SSchema));
   if (pSW->pSchema == NULL) return -1;
   for (int32_t i = 0; i < pSW->nCols; i++) {
     if (tDecodeSSchema(pDecoder, &pSW->pSchema[i]) < 0) return -1;
diff --git a/include/common/trow.h b/include/common/trow.h
index 02f84b372e..8b1d612433 100644
--- a/include/common/trow.h
+++ b/include/common/trow.h
@@ -622,7 +622,6 @@ static FORCE_INLINE int32_t tdSRowSetTpInfo(SRowBuilder *pBuilder, int32_t nCols
   return TSDB_CODE_SUCCESS;
 }
 
-
 /**
  * @brief To judge row type: STpRow/SKvRow
  *
@@ -758,7 +757,6 @@ static int32_t tdSRowGetBuf(SRowBuilder *pBuilder, void *pBuf) {
   return TSDB_CODE_SUCCESS;
 }
 
-
 /**
  * @brief 由调用方管理存储空间的分配及释放，一次输入多个参数
  *
@@ -1250,16 +1248,16 @@ static FORCE_INLINE int32_t tdGetColDataOfRow(SCellVal *pVal, SDataCol *pCol, in
 }
 
 /**
- * @brief 
- * 
- * @param pRow 
- * @param colId 
- * @param colType 
- * @param flen 
- * @param offset 
+ * @brief
+ *
+ * @param pRow
+ * @param colId
+ * @param colType
+ * @param flen
+ * @param offset
  * @param colIdx start from 0
- * @param pVal 
- * @return FORCE_INLINE 
+ * @param pVal
+ * @return FORCE_INLINE
  */
 static FORCE_INLINE bool tdSTpRowGetVal(STSRow *pRow, col_id_t colId, col_type_t colType, int32_t flen, uint32_t offset,
                                         col_id_t colIdx, SCellVal *pVal) {
@@ -1273,14 +1271,14 @@ static FORCE_INLINE bool tdSTpRowGetVal(STSRow *pRow, col_id_t colId, col_type_t
 }
 
 /**
- * @brief 
- * 
- * @param pRow 
- * @param colId 
- * @param offset 
+ * @brief
+ *
+ * @param pRow
+ * @param colId
+ * @param offset
  * @param colIdx start from 0
- * @param pVal 
- * @return FORCE_INLINE 
+ * @param pVal
+ * @return FORCE_INLINE
  */
 static FORCE_INLINE bool tdSKvRowGetVal(STSRow *pRow, col_id_t colId, uint32_t offset, col_id_t colIdx,
                                         SCellVal *pVal) {
@@ -1397,14 +1395,14 @@ static void tdSCellValPrint(SCellVal *pVal, int8_t colType) {
   }
 }
 
-static void tdSRowPrint(STSRow *row, STSchema *pSchema, const char* tag) {
+static void tdSRowPrint(STSRow *row, STSchema *pSchema, const char *tag) {
   STSRowIter iter = {0};
   tdSTSRowIterInit(&iter, pSchema);
   tdSTSRowIterReset(&iter, row);
   printf("%s >>>", tag);
   for (int i = 0; i < pSchema->numOfCols; ++i) {
     STColumn *stCol = pSchema->columns + i;
-    SCellVal  sVal = { 255, NULL};
+    SCellVal  sVal = {255, NULL};
     if (!tdSTSRowIterNext(&iter, stCol->colId, stCol->type, &sVal)) {
       break;
     }
diff --git a/include/libs/stream/tstream.h b/include/libs/stream/tstream.h
index 2e5574511b..42180833df 100644
--- a/include/libs/stream/tstream.h
+++ b/include/libs/stream/tstream.h
@@ -70,8 +70,10 @@ typedef struct {
 } STaskDispatcherShuffle;
 
 typedef struct {
-  int8_t reserved;
+  int8_t          reserved;
+  SSchemaWrapper* pSchemaWrapper;
   // not applicable to encoder and decoder
+  STSchema* pTSchema;
   SHashObj* pHash;  // groupId to tbuid
 } STaskSinkTb;
 
diff --git a/source/common/src/tdatablock.c b/source/common/src/tdatablock.c
index dcea167e81..875ae15071 100644
--- a/source/common/src/tdatablock.c
+++ b/source/common/src/tdatablock.c
@@ -1589,3 +1589,68 @@ int32_t buildSubmitReqFromDataBlock(SSubmitReq** pReq, const SArray* pDataBlocks
 
   return TSDB_CODE_SUCCESS;
 }
+
+SSubmitReq* tdBlockToSubmit(const SArray* pBlocks, const STSchema* pTSchema) {
+  SSubmitReq* ret = NULL;
+
+  // cal size
+  int32_t cap = sizeof(SSubmitReq);
+  int32_t sz = taosArrayGetSize(pBlocks);
+  for (int32_t i = 0; i < sz; i++) {
+    SSDataBlock* pDataBlock = taosArrayGet(pBlocks, i);
+    int32_t      rows = pDataBlock->info.rows;
+    // TODO min
+    int32_t rowSize = pDataBlock->info.rowSize;
+    int32_t maxLen = TD_ROW_MAX_BYTES_FROM_SCHEMA(pTSchema);
+    cap += sizeof(SSubmitBlk) + rows * maxLen;
+  }
+
+  // assign data
+  ret = taosMemoryCalloc(1, cap);
+  ret->version = htonl(1);
+  ret->length = htonl(cap - sizeof(SSubmitReq));
+  ret->numOfBlocks = htonl(sz);
+
+  void* submitBlk = POINTER_SHIFT(ret, sizeof(SSubmitReq));
+  for (int32_t i = 0; i < sz; i++) {
+    SSDataBlock* pDataBlock = taosArrayGet(pBlocks, i);
+
+    SSubmitBlk* blkHead = submitBlk;
+    blkHead->numOfRows = htons(pDataBlock->info.rows);
+    blkHead->schemaLen = 0;
+    blkHead->sversion = htonl(pTSchema->version);
+    // TODO
+    blkHead->suid = 0;
+    blkHead->uid = htobe64(pDataBlock->info.uid);
+
+    int32_t rows = pDataBlock->info.rows;
+    int32_t maxLen = TD_ROW_MAX_BYTES_FROM_SCHEMA(pTSchema);
+    /*blkHead->dataLen = htonl(rows * maxLen);*/
+    blkHead->dataLen = 0;
+
+    void*   blockData = POINTER_SHIFT(submitBlk, sizeof(SSubmitBlk));
+    STSRow* rowData = blockData;
+
+    for (int32_t j = 0; j < pDataBlock->info.rows; j++) {
+      SRowBuilder rb = {0};
+      tdSRowInit(&rb, pTSchema->version);
+      tdSRowSetTpInfo(&rb, pTSchema->numOfCols, pTSchema->flen);
+      tdSRowResetBuf(&rb, rowData);
+
+      for (int32_t k = 0; k < pTSchema->numOfCols; k++) {
+        const STColumn*  pColumn = &pTSchema->columns[k];
+        SColumnInfoData* pColData = taosArrayGet(pDataBlock->pDataBlock, k);
+        void*            data = colDataGetData(pColData, j);
+        tdAppendColValToRow(&rb, pColumn->colId, pColumn->type, TD_VTYPE_NORM, data, true, pColumn->offset, k);
+      }
+      int32_t rowLen = TD_ROW_LEN(rowData);
+      rowData = POINTER_SHIFT(rowData, rowLen);
+      blkHead->dataLen += rowLen;
+    }
+    int32_t len = blkHead->dataLen;
+    blkHead->dataLen = htonl(len);
+    blkHead = POINTER_SHIFT(blkHead, len);
+  }
+
+  return ret;
+}
diff --git a/source/common/src/tdataformat.c b/source/common/src/tdataformat.c
index df598046e1..e659b9ec04 100644
--- a/source/common/src/tdataformat.c
+++ b/source/common/src/tdataformat.c
@@ -16,6 +16,7 @@
 #define _DEFAULT_SOURCE
 #include "tdataformat.h"
 #include "tcoding.h"
+#include "tdatablock.h"
 #include "tlog.h"
 
 static void dataColSetNEleNull(SDataCol *pCol, int nEle);
@@ -128,6 +129,50 @@ void *tdDecodeSchema(void *buf, STSchema **pRSchema) {
   return buf;
 }
 
+#if 0
+int32_t tEncodeSTColumn(SCoder *pEncoder, const STColumn *pCol) {
+  if (tEncodeI16(pEncoder, pCol->colId) < 0) return -1;
+  if (tEncodeI8(pEncoder, pCol->type) < 0) return -1;
+  if (tEncodeI8(pEncoder, pCol->sma) < 0) return -1;
+  if (tEncodeI32(pEncoder, pCol->bytes) < 0) return -1;
+  if (tEncodeI32(pEncoder, pCol->offset) < 0) return -1;
+  return pEncoder->pos;
+}
+
+int32_t tDecodeSTColumn(SCoder *pDecoder, STColumn *pCol) {
+  if (tDecodeI16(pDecoder, &pCol->colId) < 0) return -1;
+  if (tDecodeI8(pDecoder, &pCol->type) < 0) return -1;
+  if (tDecodeI8(pDecoder, &pCol->sma) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pCol->bytes) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pCol->offset) < 0) return -1;
+  return 0;
+}
+
+int32_t tEncodeSchema(SCoder *pEncoder, const STSchema *pSchema) {
+  if (tEncodeI32(pEncoder, pSchema->numOfCols) < 0) return -1;
+  if (tEncodeI16(pEncoder, pSchema->version) < 0) return -1;
+  if (tEncodeU16(pEncoder, pSchema->flen) < 0) return -1;
+  if (tEncodeI32(pEncoder, pSchema->vlen) < 0) return -1;
+  if (tEncodeI32(pEncoder, pSchema->tlen) < 0) return -1;
+
+  for (int32_t i = 0; i < schemaNCols(pSchema); i++) {
+    const STColumn *pCol = schemaColAt(pSchema, i);
+    if (tEncodeSTColumn(pEncoder, pCol) < 0) return -1;
+  }
+  return 0;
+}
+
+int32_t tDecodeSchema(SCoder *pDecoder, STSchema *pSchema) {
+  if (tDecodeI32(pDecoder, &pSchema->numOfCols) < 0) return -1;
+  if (tDecodeI16(pDecoder, &pSchema->version) < 0) return -1;
+  if (tDecodeU16(pDecoder, &pSchema->flen) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pSchema->vlen) < 0) return -1;
+  if (tDecodeI32(pDecoder, &pSchema->tlen) < 0) return -1;
+
+  return 0;
+}
+#endif
+
 int tdInitTSchemaBuilder(STSchemaBuilder *pBuilder, schema_ver_t version) {
   if (pBuilder == NULL) return -1;
 
@@ -908,4 +953,4 @@ SMemRow mergeTwoMemRows(void *buffer, SMemRow row1, SMemRow row2, STSchema *pSch
   taosArrayDestroy(stashRow);
   return buffer;
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index 81e3ebb4b3..f6c68fbeb6 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -103,6 +103,25 @@ STSRow *tGetSubmitBlkNext(SSubmitBlkIter *pIter) {
   }
 }
 
+int32_t tPrintFixedSchemaSubmitReq(const SSubmitReq *pReq, STSchema *pTschema) {
+  SSubmitMsgIter msgIter = {0};
+  if (tInitSubmitMsgIter(pReq, &msgIter) < 0) return -1;
+  while (true) {
+    SSubmitBlk *pBlock = NULL;
+    if (tGetSubmitMsgNext(&msgIter, &pBlock) < 0) return -1;
+    if (pBlock == NULL) break;
+    SSubmitBlkIter blkIter = {0};
+    tInitSubmitBlkIter(&msgIter, pBlock, &blkIter);
+    STSRowIter rowIter = {0};
+    tdSTSRowIterInit(&rowIter, pTschema);
+    STSRow *row;
+    while ((row = tGetSubmitBlkNext(&blkIter)) != NULL) {
+      tdSRowPrint(row, pTschema, "stream");
+    }
+  }
+  return 0;
+}
+
 int32_t tEncodeSEpSet(SCoder *pEncoder, const SEpSet *pEp) {
   if (tEncodeI8(pEncoder, pEp->inUse) < 0) return -1;
   if (tEncodeI8(pEncoder, pEp->numOfEps) < 0) return -1;
diff --git a/source/dnode/mnode/impl/inc/mndDef.h b/source/dnode/mnode/impl/inc/mndDef.h
index d516b0bf26..4a0df80358 100644
--- a/source/dnode/mnode/impl/inc/mndDef.h
+++ b/source/dnode/mnode/impl/inc/mndDef.h
@@ -419,6 +419,7 @@ typedef struct {
 
 typedef struct {
   char    key[TSDB_PARTITION_KEY_LEN];
+  int64_t dbUid;
   int64_t offset;
 } SMqOffsetObj;
 
diff --git a/source/dnode/mnode/impl/inc/mndOffset.h b/source/dnode/mnode/impl/inc/mndOffset.h
index 556bfe6a53..b468496165 100644
--- a/source/dnode/mnode/impl/inc/mndOffset.h
+++ b/source/dnode/mnode/impl/inc/mndOffset.h
@@ -37,6 +37,8 @@ static FORCE_INLINE int32_t mndMakePartitionKey(char *key, const char *cgroup, c
   return snprintf(key, TSDB_PARTITION_KEY_LEN, "%d:%s:%s", vgId, cgroup, topicName);
 }
 
+int32_t mndDropOffsetByDB(SMnode *pMnode, STrans *pTrans, SDbObj *pDb);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/dnode/mnode/impl/inc/mndSubscribe.h b/source/dnode/mnode/impl/inc/mndSubscribe.h
index 7915006f27..5ca672e8dd 100644
--- a/source/dnode/mnode/impl/inc/mndSubscribe.h
+++ b/source/dnode/mnode/impl/inc/mndSubscribe.h
@@ -31,6 +31,8 @@ void             mndReleaseSubscribe(SMnode *pMnode, SMqSubscribeObj *pSub);
 
 int32_t mndMakeSubscribeKey(char *key, const char *cgroup, const char *topicName);
 
+int32_t mndDropSubByDB(SMnode *pMnode, STrans *pTrans, SDbObj *pDb);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/dnode/mnode/impl/src/mndDb.c b/source/dnode/mnode/impl/src/mndDb.c
index 5861f8d245..dfad99bdfb 100644
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@@ -17,9 +17,12 @@
 #include "mndDb.h"
 #include "mndAuth.h"
 #include "mndDnode.h"
+#include "mndOffset.h"
 #include "mndShow.h"
 #include "mndSma.h"
 #include "mndStb.h"
+#include "mndSubscribe.h"
+#include "mndTopic.h"
 #include "mndTrans.h"
 #include "mndUser.h"
 #include "mndVgroup.h"
@@ -1027,6 +1030,9 @@ static int32_t mndDropDb(SMnode *pMnode, SNodeMsg *pReq, SDbObj *pDb) {
 
   if (mndSetDropDbRedoLogs(pMnode, pTrans, pDb) != 0) goto _OVER;
   if (mndSetDropDbCommitLogs(pMnode, pTrans, pDb) != 0) goto _OVER;
+  /*if (mndDropOffsetByDB(pMnode, pTrans, pDb) != 0) goto _OVER;*/
+  /*if (mndDropSubByDB(pMnode, pTrans, pDb) != 0) goto _OVER;*/
+  /*if (mndDropTopicByDB(pMnode, pTrans, pDb) != 0) goto _OVER;*/
   if (mndSetDropDbRedoActions(pMnode, pTrans, pDb) != 0) goto _OVER;
 
   int32_t rspLen = 0;
@@ -1387,7 +1393,7 @@ static void dumpDbInfoData(SSDataBlock *pBlock, SDbObj *pDb, SShowObj *pShow, in
                            bool sysDb) {
   int32_t cols = 0;
 
-  int32_t bytes = pShow->pMeta->pSchemas[cols].bytes;
+  int32_t     bytes = pShow->pMeta->pSchemas[cols].bytes;
   char       *buf = taosMemoryMalloc(bytes);
   const char *name = mndGetDbStr(pDb->name);
   if (name != NULL) {
diff --git a/source/dnode/mnode/impl/src/mndOffset.c b/source/dnode/mnode/impl/src/mndOffset.c
index f075348704..e0ba4076f5 100644
--- a/source/dnode/mnode/impl/src/mndOffset.c
+++ b/source/dnode/mnode/impl/src/mndOffset.c
@@ -231,3 +231,36 @@ static void mndCancelGetNextOffset(SMnode *pMnode, void *pIter) {
   SSdb *pSdb = pMnode->pSdb;
   sdbCancelFetch(pSdb, pIter);
 }
+
+static int32_t mndSetDropOffsetCommitLogs(SMnode *pMnode, STrans *pTrans, SMqOffsetObj *pOffset) {
+  SSdbRaw *pCommitRaw = mndOffsetActionEncode(pOffset);
+  if (pCommitRaw == NULL) return -1;
+  if (mndTransAppendCommitlog(pTrans, pCommitRaw) != 0) return -1;
+  if (sdbSetRawStatus(pCommitRaw, SDB_STATUS_DROPPED) != 0) return -1;
+  return 0;
+}
+
+int32_t mndDropOffsetByDB(SMnode *pMnode, STrans *pTrans, SDbObj *pDb) {
+  int32_t code = -1;
+  SSdb   *pSdb = pMnode->pSdb;
+
+  void         *pIter = NULL;
+  SMqOffsetObj *pOffset = NULL;
+  while (1) {
+    pIter = sdbFetch(pSdb, SDB_SUBSCRIBE, pIter, (void **)&pOffset);
+    if (pIter == NULL) break;
+
+    if (pOffset->dbUid != pDb->uid) {
+      sdbRelease(pSdb, pOffset);
+      continue;
+    }
+
+    if (mndSetDropOffsetCommitLogs(pMnode, pTrans, pOffset) < 0) {
+      goto END;
+    }
+  }
+
+  code = 0;
+END:
+  return code;
+}
diff --git a/source/dnode/mnode/impl/src/mndScheduler.c b/source/dnode/mnode/impl/src/mndScheduler.c
index b760dd6aa8..9274d35b8b 100644
--- a/source/dnode/mnode/impl/src/mndScheduler.c
+++ b/source/dnode/mnode/impl/src/mndScheduler.c
@@ -204,6 +204,8 @@ int32_t mndAddShuffledSinkToStream(SMnode* pMnode, STrans* pTrans, SStreamObj* p
       pTask->smaSink.smaId = pStream->smaId;
     } else {
       pTask->sinkType = TASK_SINK__TABLE;
+      pTask->tbSink.pSchemaWrapper = tCloneSSchemaWrapper(&pStream->outputSchema);
+      ASSERT(pTask->tbSink.pSchemaWrapper);
     }
 
     // dispatch
@@ -242,6 +244,7 @@ int32_t mndAddFixedSinkToStream(SMnode* pMnode, STrans* pTrans, SStreamObj* pStr
     pTask->smaSink.smaId = pStream->smaId;
   } else {
     pTask->sinkType = TASK_SINK__TABLE;
+    pTask->tbSink.pSchemaWrapper = tCloneSSchemaWrapper(&pStream->outputSchema);
   }
   //
   // dispatch
@@ -316,6 +319,7 @@ int32_t mndScheduleStream(SMnode* pMnode, STrans* pTrans, SStreamObj* pStream) {
               pTask->smaSink.smaId = pStream->smaId;
             } else {
               pTask->sinkType = TASK_SINK__TABLE;
+              pTask->tbSink.pSchemaWrapper = tCloneSSchemaWrapper(&pStream->outputSchema);
             }
 #endif
           }
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index 411d5c451c..261b4aa8ae 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -926,6 +926,12 @@ int32_t tqProcessTaskDeploy(STQ* pTq, char* msg, int32_t msgLen) {
   pTask->ahandle = pTq->pVnode;
   if (pTask->sinkType == TASK_SINK__SMA) {
     pTask->smaSink.smaHandle = smaHandleRes;
+  } else if (pTask->sinkType == TASK_SINK__TABLE) {
+    ASSERT(pTask->tbSink.pSchemaWrapper);
+    ASSERT(pTask->tbSink.pSchemaWrapper->pSchema);
+    pTask->tbSink.pTSchema =
+        tdGetSTSChemaFromSSChema(&pTask->tbSink.pSchemaWrapper->pSchema, pTask->tbSink.pSchemaWrapper->nCols);
+    ASSERT(pTask->tbSink.pTSchema);
   }
 
   taosHashPut(pTq->pStreamTasks, &pTask->taskId, sizeof(int32_t), pTask, sizeof(SStreamTask));
diff --git a/source/libs/stream/src/tstream.c b/source/libs/stream/src/tstream.c
index cf3cd162aa..b8198364c2 100644
--- a/source/libs/stream/src/tstream.c
+++ b/source/libs/stream/src/tstream.c
@@ -152,8 +152,10 @@ int32_t streamExecTask(SStreamTask* pTask, SMsgCb* pMsgCb, const void* input, in
 
   // sink
   if (pTask->sinkType == TASK_SINK__TABLE) {
-    //
-    blockDebugShowData(pRes);
+    /*blockDebugShowData(pRes);*/
+    ASSERT(pTask->tbSink.pTSchema);
+    SSubmitReq* pReq = tdBlockToSubmit(pRes, pTask->tbSink.pTSchema);
+    tPrintFixedSchemaSubmitReq(pReq, pTask->tbSink.pTSchema);
   } else if (pTask->sinkType == TASK_SINK__SMA) {
     pTask->smaSink.smaHandle(pTask->ahandle, pTask->smaSink.smaId, pRes);
     //
@@ -274,7 +276,8 @@ int32_t tEncodeSStreamTask(SCoder* pEncoder, const SStreamTask* pTask) {
   }
 
   if (pTask->sinkType == TASK_SINK__TABLE) {
-    if (tEncodeI8(pEncoder, pTask->tbSink.reserved) < 0) return -1;
+    /*if (tEncodeI8(pEncoder, pTask->tbSink.reserved) < 0) return -1;*/
+    if (tEncodeSSchemaWrapper(pEncoder, pTask->tbSink.pSchemaWrapper) < 0) return -1;
   } else if (pTask->sinkType == TASK_SINK__SMA) {
     if (tEncodeI64(pEncoder, pTask->smaSink.smaId) < 0) return -1;
   } else if (pTask->sinkType == TASK_SINK__FETCH) {
@@ -318,7 +321,10 @@ int32_t tDecodeSStreamTask(SCoder* pDecoder, SStreamTask* pTask) {
   }
 
   if (pTask->sinkType == TASK_SINK__TABLE) {
-    if (tDecodeI8(pDecoder, &pTask->tbSink.reserved) < 0) return -1;
+    /*if (tDecodeI8(pDecoder, &pTask->tbSink.reserved) < 0) return -1;*/
+    pTask->tbSink.pSchemaWrapper = taosMemoryCalloc(1, sizeof(SSchemaWrapper));
+    if (pTask->tbSink.pSchemaWrapper == NULL) return -1;
+    if (tDecodeSSchemaWrapper(pDecoder, pTask->tbSink.pSchemaWrapper) < 0) return -1;
   } else if (pTask->sinkType == TASK_SINK__SMA) {
     if (tDecodeI64(pDecoder, &pTask->smaSink.smaId) < 0) return -1;
   } else if (pTask->sinkType == TASK_SINK__FETCH) {