Merge branch '3.0' into fix/nullcheck

docs/en/12-taos-sql/06-select.md

@@ -24,7 +24,7 @@ SELECT [hints] [DISTINCT] [TAGS] select_list
 hints: /*+ [hint([hint_param_list])] [hint([hint_param_list])] */
 
 hint:
-    BATCH_SCAN | NO_BATCH_SCAN | SORT_FOR_GROUP
+    BATCH_SCAN | NO_BATCH_SCAN | SORT_FOR_GROUP | PARA_TABLES_SORT
 
 select_list:
     select_expr [, select_expr] ...
@@ -87,12 +87,13 @@ Hints are a means of user control over query optimization for individual stateme
 
 The list of currently supported Hints is as follows:
 
-|    **Hint**   |    **Params**  |         **Comment**        |       **Scopt**            |
+|    **Hint**   |    **Params**  |         **Comment**        |       **Scope**            |
 | :-----------: | -------------- | -------------------------- | -----------------------------------|
 | BATCH_SCAN    | None           | Batch table scan           | JOIN statment for stable           |
 | NO_BATCH_SCAN | None           | Sequential table scan      | JOIN statment for stable           |
 | SORT_FOR_GROUP| None           | Use sort for partition, conflict with PARTITION_FIRST     | With normal column in partition by list |
 | PARTITION_FIRST| None          | Use Partition before aggregate, conflict with SORT_FOR_GROUP | With normal column in partition by list |
+| PARA_TABLES_SORT| None         | When sorting the supertable rows by timestamp, No temporary disk space is used. When there are numerous tables, each with long rows, the corresponding algorithm associated with this prompt may consume a substantial amount of memory, potentially leading to an Out Of Memory (OOM) situation. | Sorting the supertable rows by timestamp  |
 
 For example:
 
@@ -100,6 +101,7 @@ For example:
 SELECT /*+ BATCH_SCAN() */ a.ts FROM stable1 a, stable2 b where a.tag0 = b.tag0 and a.ts = b.ts;
 SELECT /*+ SORT_FOR_GROUP() */ count(*), c1 FROM stable1 PARTITION BY c1;
 SELECT /*+ PARTITION_FIRST() */ count(*), c1 FROM stable1 PARTITION BY c1;
+SELECT /*+ PARA_TABLES_SORT() */ * from stable1 order by ts;
 ```
 
 ## Lists

docs/zh/12-taos-sql/06-select.md

@@ -24,7 +24,7 @@ SELECT [hints] [DISTINCT] [TAGS] select_list
 hints: /*+ [hint([hint_param_list])] [hint([hint_param_list])] */
 
 hint:
-    BATCH_SCAN | NO_BATCH_SCAN | SORT_FOR_GROUP
+    BATCH_SCAN | NO_BATCH_SCAN | SORT_FOR_GROUP | PARA_TABLES_SORT
 
 select_list:
     select_expr [, select_expr] ...
@@ -93,13 +93,14 @@ Hints 是用户控制单个语句查询优化的一种手段，当 Hint 不适
 | NO_BATCH_SCAN | 无             | 采用顺序读表的方式         | 超级表 JOIN 语句             |
 | SORT_FOR_GROUP| 无             | 采用sort方式进行分组, 与PARTITION_FIRST冲突  | partition by 列表有普通列时  |
 | PARTITION_FIRST| 无             | 在聚合之前使用PARTITION计算分组, 与SORT_FOR_GROUP冲突 | partition by 列表有普通列时  |
-
+| PARA_TABLES_SORT| 无             | 超级表的数据按时间戳排序时, 不使用临时磁盘空间, 只使用内存。当子表数量多, 行长比较大时候, 会使用大量内存, 可能发生OOM | 超级表的数据按时间戳排序时  |
 举例： 
 
 ```sql
 SELECT /*+ BATCH_SCAN() */ a.ts FROM stable1 a, stable2 b where a.tag0 = b.tag0 and a.ts = b.ts;
 SELECT /*+ SORT_FOR_GROUP() */ count(*), c1 FROM stable1 PARTITION BY c1;
 SELECT /*+ PARTITION_FIRST() */ count(*), c1 FROM stable1 PARTITION BY c1;
+SELECT /*+ PARA_TABLES_SORT() */ * from stable1 order by ts;
 ```
 
 ## 列表

include/common/ttokendef.h

@@ -379,6 +379,7 @@
 #define TK_NO_BATCH_SCAN    607
 #define TK_SORT_FOR_GROUP   608
 #define TK_PARTITION_FIRST  609
+#define TK_PARA_TABLES_SORT  610
 
 
 #define TK_NK_NIL 65535

include/libs/nodes/plannodes.h

@@ -121,6 +121,7 @@ typedef struct SScanLogicNode {
   bool          filesetDelimited; // returned blocks delimited by fileset
   bool          isCountByTag;  // true if selectstmt hasCountFunc & part by tag/tbname
   SArray*       pFuncTypes; // for last, last_row
+  bool          paraTablesSort; // for table merge scan
 } SScanLogicNode;
 
 typedef struct SJoinLogicNode {
@@ -443,6 +444,7 @@ typedef struct STableScanPhysiNode {
   int8_t         igCheckUpdate;
   bool           filesetDelimited;
   bool           needCountEmptyTable;
+  bool           paraTablesSort;
 } STableScanPhysiNode;
 
 typedef STableScanPhysiNode STableSeqScanPhysiNode;

include/libs/nodes/querynodes.h

@@ -128,6 +128,7 @@ typedef enum EHintOption {
   HINT_BATCH_SCAN,
   HINT_SORT_FOR_GROUP,
   HINT_PARTITION_FIRST,
+  HINT_PARA_TABLES_SORT
 } EHintOption;
 
 typedef struct SHintNode {

source/common/src/tdatablock.c

@@ -631,7 +631,6 @@ SSDataBlock* blockDataExtractBlock(SSDataBlock* pBlock, int32_t startIndex, int3
   for (int32_t i = 0; i < numOfCols; ++i) {
     SColumnInfoData* pColData = taosArrayGet(pBlock->pDataBlock, i);
     SColumnInfoData* pDstCol = taosArrayGet(pDst->pDataBlock, i);
-
     for (int32_t j = startIndex; j < (startIndex + rowCount); ++j) {
       bool isNull = false;
       if (pBlock->pBlockAgg == NULL) {

source/dnode/mnode/impl/inc/mndStream.h

@@ -119,6 +119,7 @@ int32_t     mndStreamSetPauseAction(SMnode *pMnode, STrans *pTrans, SStreamObj *
 int32_t     mndStreamSetDropAction(SMnode *pMnode, STrans *pTrans, SStreamObj *pStream);
 int32_t     mndStreamSetDropActionFromList(SMnode *pMnode, STrans *pTrans, SArray *pList);
 int32_t     mndStreamSetResetTaskAction(SMnode *pMnode, STrans *pTrans, SStreamObj *pStream);
+int32_t     mndCreateStreamResetStatusTrans(SMnode *pMnode, SStreamObj *pStream);
 
 SStreamTaskIter *createStreamTaskIter(SStreamObj *pStream);
 void             destroyStreamTaskIter(SStreamTaskIter *pIter);

source/dnode/mnode/impl/src/mndStream.c

@@ -1545,6 +1545,8 @@ static int32_t mndProcessPauseStreamReq(SRpcMsg *pReq) {
     }
   }
 
+  mInfo("stream:%s,%"PRId64 " start to pause stream", pauseReq.name, pStream->uid);
+
   if (pStream->status == STREAM_STATUS__PAUSE) {
     sdbRelease(pMnode->pSdb, pStream);
     return 0;

source/dnode/mnode/impl/src/mndStreamHb.c

@@ -69,7 +69,7 @@ static void addIntoCheckpointList(SArray* pList, const SFailedCheckpointInfo* pI
   taosArrayPush(pList, pInfo);
 }
 
-int32_t createStreamResetStatusTrans(SMnode *pMnode, SStreamObj *pStream) {
+int32_t mndCreateStreamResetStatusTrans(SMnode *pMnode, SStreamObj *pStream) {
   STrans *pTrans = doCreateTrans(pMnode, pStream, NULL, MND_STREAM_TASK_RESET_NAME, " reset from failed checkpoint");
   if (pTrans == NULL) {
     return terrno;
@@ -119,7 +119,7 @@ static int32_t mndResetStatusFromCheckpoint(SMnode *pMnode, int64_t streamId, in
     } else {
       mDebug("stream:%s (0x%" PRIx64 ") reset checkpoint procedure, transId:%d, create reset trans", pStream->name,
              pStream->uid, transId);
-      code = createStreamResetStatusTrans(pMnode, pStream);
+      code = mndCreateStreamResetStatusTrans(pMnode, pStream);
     }
   }
 
@@ -215,7 +215,7 @@ int32_t suspendAllStreams(SMnode *pMnode, SRpcHandleInfo* info){
       };
 
       tmsgPutToQueue(&pMnode->msgCb, WRITE_QUEUE, &rpcMsg);
-      mInfo("receive pause stream:%s, %s, %p, because grant expired", pStream->name, reqPause.name, reqPause.name);
+      mInfo("receive pause stream:%s, %s, %"PRId64 ", because grant expired", pStream->name, reqPause.name, pStream->uid);
     }
 
     sdbRelease(pSdb, pStream);

source/dnode/mnode/impl/src/mndStreamTrans.c

@@ -261,22 +261,30 @@ int32_t setTransAction(STrans *pTrans, void *pCont, int32_t contLen, int32_t msg
   return mndTransAppendRedoAction(pTrans, &action);
 }
 
+static bool identicalName(const char* pDb, const char* pParam, int32_t len) {
+  return (strlen(pDb) == len) && (strncmp(pDb, pParam, len) == 0);
+}
+
 int32_t doKillCheckpointTrans(SMnode *pMnode, const char *pDBName, size_t len) {
-  // data in the hash table will be removed automatically, no need to remove it here.
+  void *pIter = NULL;
-  SStreamTransInfo *pTransInfo = taosHashGet(execInfo.transMgmt.pDBTrans, pDBName, len);
-  if (pTransInfo == NULL) {
-    return TSDB_CODE_SUCCESS;
-  }
 
-  // not checkpoint trans, ignore
+  while ((pIter = taosHashIterate(execInfo.transMgmt.pDBTrans, pIter)) != NULL) {
-  if (strcmp(pTransInfo->name, MND_STREAM_CHECKPOINT_NAME) != 0) {
+    SStreamTransInfo *pTransInfo = (SStreamTransInfo *)pIter;
-    mDebug("not checkpoint trans, not kill it, name:%s, transId:%d", pTransInfo->name, pTransInfo->transId);
+    if (strcmp(pTransInfo->name, MND_STREAM_CHECKPOINT_NAME) != 0) {
-    return TSDB_CODE_SUCCESS;
+      continue;
-  }
+    }
 
-  char *pDupDBName = strndup(pDBName, len);
+    SStreamObj *pStream = mndGetStreamObj(pMnode, pTransInfo->streamId);
-  mndKillTransImpl(pMnode, pTransInfo->transId, pDupDBName);
+    if (pStream != NULL) {
-  taosMemoryFree(pDupDBName);
+      if (identicalName(pStream->sourceDb, pDBName, len)) {
+        mndKillTransImpl(pMnode, pTransInfo->transId, pStream->sourceDb);
+      } else if (identicalName(pStream->targetDb, pDBName, len)) {
+        mndKillTransImpl(pMnode, pTransInfo->transId, pStream->targetDb);
+      }
+
+      mndReleaseStream(pMnode, pStream);
+    }
+  }
 
   return TSDB_CODE_SUCCESS;
 }

source/dnode/mnode/impl/src/mndStreamUtil.c

@@ -231,6 +231,8 @@ static int32_t doSetResumeAction(STrans *pTrans, SMnode *pMnode, SStreamTask *pT
     taosMemoryFree(pReq);
     return -1;
   }
+
+  mDebug("set the resume action for trans:%d", pTrans->id);
   return 0;
 }
 

source/libs/executor/inc/executorInt.h

@@ -283,6 +283,42 @@ typedef struct STableScanInfo {
   bool            needCountEmptyTable;
 } STableScanInfo;
 
+typedef enum ESubTableInputType {
+  SUB_TABLE_MEM_BLOCK,
+  SUB_TABLE_EXT_PAGES,
+} ESubTableInputType;
+
+typedef struct STmsSubTableInput {
+  STsdbReader* pReader;
+  SQueryTableDataCond tblCond;
+  STableKeyInfo* pKeyInfo;
+  bool bInMemReader;
+  ESubTableInputType type;
+  SSDataBlock* pReaderBlock;
+
+  SArray* aBlockPages;
+  SSDataBlock* pPageBlock;
+  int32_t pageIdx;
+
+  int32_t rowIdx;
+  int64_t* aTs;
+} STmsSubTableInput;
+
+typedef struct SBlockOrderInfo SBlockOrderInfo;
+typedef struct STmsSubTablesMergeInfo {
+  SBlockOrderInfo* pOrderInfo;
+
+  int32_t numSubTables;
+  STmsSubTableInput* aInputs;
+  SMultiwayMergeTreeInfo* pTree;
+  int32_t numSubTablesCompleted;
+
+  int32_t        numTableBlocksInMem;
+  SDiskbasedBuf* pBlocksBuf;
+
+  int32_t numInMemReaders;
+} STmsSubTablesMergeInfo;
+
 typedef struct STableMergeScanInfo {
   int32_t         tableStartIndex;
   int32_t         tableEndIndex;
@@ -296,7 +332,6 @@ typedef struct STableMergeScanInfo {
   SSDataBlock*    pSortInputBlock;
   SSDataBlock*    pReaderBlock;
   int64_t         startTs;  // sort start time
-  SArray*         sortSourceParams;
   SLimitInfo      limitInfo;
   int64_t         numOfRows;
   SScanInfo       scanInfo;
@@ -317,6 +352,8 @@ typedef struct STableMergeScanInfo {
   SSDataBlock*     nextDurationBlocks[2];
   bool             rtnNextDurationBlocks;
   int32_t          nextDurationBlocksIdx;
+
+  STmsSubTablesMergeInfo* pSubTablesMergeInfo;
 } STableMergeScanInfo;
 
 typedef struct STagScanFilterContext {

source/libs/executor/src/scanoperator.c

@@ -3421,6 +3421,414 @@ _error:
   return NULL;
 }
 
+// table merge scan operator
+
+// table merge scan operator
+
+static int32_t subTblRowCompareFn(const void* pLeft, const void* pRight, void* param) {
+  int32_t left = *(int32_t*)pLeft;
+  int32_t right = *(int32_t*)pRight;
+  STmsSubTablesMergeInfo* pInfo = (STmsSubTablesMergeInfo*)param;
+
+  int32_t leftIdx = pInfo->aInputs[left].rowIdx;
+  int32_t rightIdx = pInfo->aInputs[right].rowIdx;
+
+  if (leftIdx == -1) {
+    return 1;
+  } else if (rightIdx == -1) {
+    return -1;
+  }
+
+  int64_t leftTs = pInfo->aInputs[left].aTs[leftIdx];
+  int64_t rightTs = pInfo->aInputs[right].aTs[rightIdx];
+  int32_t ret = leftTs>rightTs ? 1 : ((leftTs < rightTs) ? -1 : 0);
+  if (pInfo->pOrderInfo->order == TSDB_ORDER_DESC) {
+    ret = -1 * ret;
+  }
+  return ret;
+}
+
+int32_t dumpQueryTableCond(const SQueryTableDataCond* src, SQueryTableDataCond* dst) {
+  memcpy((void*)dst, (void*)src, sizeof(SQueryTableDataCond));
+  dst->colList = taosMemoryCalloc(src->numOfCols, sizeof(SColumnInfo));
+  for (int i = 0; i < src->numOfCols; i++) {
+    dst->colList[i] = src->colList[i];
+  }
+  return 0;
+}
+
+static int32_t fetchNextSubTableBlockFromReader(SOperatorInfo* pOperator, STmsSubTableInput* pInput, bool* pSubTableHasBlock) {
+  int32_t code = 0;
+
+  STableMergeScanInfo* pInfo = pOperator->info;
+  SReadHandle* pHandle = &pInfo->base.readHandle;
+  STmsSubTablesMergeInfo* pSubTblsInfo = pInfo->pSubTablesMergeInfo;
+  SExecTaskInfo*       pTaskInfo = pOperator->pTaskInfo;
+  const SStorageAPI* pAPI= &pTaskInfo->storageAPI;
+
+  blockDataCleanup(pInput->pReaderBlock);
+  if (!pInput->bInMemReader) {
+    code = pAPI->tsdReader.tsdReaderOpen(pHandle->vnode, &pInput->tblCond, pInput->pKeyInfo, 1, pInput->pReaderBlock,
+                                        (void**)&pInput->pReader, GET_TASKID(pTaskInfo), NULL);
+    if (code != 0) {
+      T_LONG_JMP(pTaskInfo->env, code);
+    }
+  }
+
+  pInfo->base.dataReader = pInput->pReader;
+
+  while (true) {
+    bool hasNext = false;
+    int32_t code = pAPI->tsdReader.tsdNextDataBlock(pInfo->base.dataReader, &hasNext);
+    if (code != 0) {
+      pAPI->tsdReader.tsdReaderReleaseDataBlock(pInfo->base.dataReader);
+      pInfo->base.dataReader = NULL;
+      T_LONG_JMP(pTaskInfo->env, code);
+    }
+    if (!hasNext || isTaskKilled(pTaskInfo)) {
+      if (isTaskKilled(pTaskInfo)) {
+        pAPI->tsdReader.tsdReaderReleaseDataBlock(pInfo->base.dataReader);
+        pInfo->base.dataReader = NULL;
+        T_LONG_JMP(pTaskInfo->env, pTaskInfo->code);
+      }
+      *pSubTableHasBlock = false;
+      break;
+    }
+
+   if (pInput->tblCond.order == TSDB_ORDER_ASC) {
+      pInput->tblCond.twindows.skey = pInput->pReaderBlock->info.window.ekey + 1;
+    } else {
+      pInput->tblCond.twindows.ekey = pInput->pReaderBlock->info.window.skey - 1;
+    }
+
+    uint32_t status = 0;
+    code = loadDataBlock(pOperator, &pInfo->base, pInput->pReaderBlock, &status);
+    if (code != 0) {
+      pInfo->base.dataReader = NULL;
+      T_LONG_JMP(pTaskInfo->env, code);
+    }
+    if (status == FUNC_DATA_REQUIRED_ALL_FILTEROUT) {
+      *pSubTableHasBlock = false;
+      break;
+    }
+    if (status == FUNC_DATA_REQUIRED_FILTEROUT || pInput->pReaderBlock->info.rows == 0) {
+      continue;
+    }
+
+    *pSubTableHasBlock = true;
+    break;
+  }
+
+  if (*pSubTableHasBlock) {
+    pInput->pReaderBlock->info.id.groupId = tableListGetTableGroupId(pInfo->base.pTableListInfo, pInput->pReaderBlock->info.id.uid);
+    pOperator->resultInfo.totalRows += pInput->pReaderBlock->info.rows;
+  }
+  if (!pInput->bInMemReader || !*pSubTableHasBlock) {
+    pAPI->tsdReader.tsdReaderClose(pInput->pReader);
+    pInput->pReader = NULL;
+  }
+
+  pInfo->base.dataReader = NULL;
+  return TSDB_CODE_SUCCESS;
+}
+
+static void setGroupStartEndIndex(STableMergeScanInfo* pInfo) {
+  pInfo->bGroupProcessed = false;
+
+  size_t  numOfTables = tableListGetSize(pInfo->base.pTableListInfo);
+  int32_t i = pInfo->tableStartIndex + 1;
+  for (; i < numOfTables; ++i) {
+    STableKeyInfo* tableKeyInfo = tableListGetInfo(pInfo->base.pTableListInfo, i);
+    if (tableKeyInfo->groupId != pInfo->groupId) {
+      break;
+    }
+  }
+  pInfo->tableEndIndex = i - 1;
+}
+
+static int32_t openSubTablesMergeSort(STmsSubTablesMergeInfo* pSubTblsInfo) {
+  for (int32_t i = 0; i < pSubTblsInfo->numSubTables; ++i) {
+    STmsSubTableInput * pInput = pSubTblsInfo->aInputs + i;
+    if (pInput->rowIdx == -1) {
+      continue;
+    }
+    if (pInput->type == SUB_TABLE_MEM_BLOCK) {
+      pInput->rowIdx = 0;
+      pInput->pageIdx = -1;
+    }
+    SSDataBlock* pInputBlock = (pInput->type == SUB_TABLE_MEM_BLOCK) ? pInput->pReaderBlock : pInput->pPageBlock;
+    SColumnInfoData* col = taosArrayGet(pInputBlock->pDataBlock, pSubTblsInfo->pOrderInfo->slotId);
+    pInput->aTs = (int64_t*)col->pData;
+  }
+  tMergeTreeCreate(&pSubTblsInfo->pTree, pSubTblsInfo->numSubTables, pSubTblsInfo, subTblRowCompareFn);
+  return  TSDB_CODE_SUCCESS;
+}
+
+static int32_t initSubTablesMergeInfo(STableMergeScanInfo* pInfo) {
+  setGroupStartEndIndex(pInfo);
+  STmsSubTablesMergeInfo* pSubTblsInfo = taosMemoryCalloc(1, sizeof(STmsSubTablesMergeInfo));
+  if (pSubTblsInfo == NULL) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+  pSubTblsInfo->pOrderInfo = taosArrayGet(pInfo->pSortInfo, 0);
+  pSubTblsInfo->numSubTables = pInfo->tableEndIndex - pInfo->tableStartIndex + 1;
+  pSubTblsInfo->aInputs = taosMemoryCalloc(pSubTblsInfo->numSubTables, sizeof(STmsSubTableInput));
+  if (pSubTblsInfo->aInputs == NULL) {
+    taosMemoryFree(pSubTblsInfo);
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+  int32_t bufPageSize = pInfo->bufPageSize;
+  int32_t inMemSize = (pSubTblsInfo->numSubTables - pSubTblsInfo->numTableBlocksInMem) * bufPageSize;
+  int32_t code =
+      createDiskbasedBuf(&pSubTblsInfo->pBlocksBuf, pInfo->bufPageSize, inMemSize, "blocksExternalBuf", tsTempDir);
+  if (code != TSDB_CODE_SUCCESS) {
+    taosMemoryFree(pSubTblsInfo->aInputs);
+    taosMemoryFree(pSubTblsInfo);
+    return code;
+  }
+  pSubTblsInfo->numTableBlocksInMem = pSubTblsInfo->numSubTables;
+  pSubTblsInfo->numInMemReaders = pSubTblsInfo->numSubTables;
+
+  pInfo->pSubTablesMergeInfo = pSubTblsInfo;
+  return TSDB_CODE_SUCCESS;
+} 
+
+static int32_t initSubTableInputs(SOperatorInfo* pOperator, STableMergeScanInfo* pInfo) {
+  SExecTaskInfo*       pTaskInfo = pOperator->pTaskInfo;
+  SReadHandle* pHandle = &pInfo->base.readHandle;
+  SStorageAPI* pAPI = &pTaskInfo->storageAPI;
+
+  STmsSubTablesMergeInfo* pSubTblsInfo = pInfo->pSubTablesMergeInfo;
+
+  for (int32_t i = 0; i < pSubTblsInfo->numSubTables; ++i) {
+    STmsSubTableInput* pInput =  pSubTblsInfo->aInputs + i;
+    pInput->type = SUB_TABLE_MEM_BLOCK;
+    dumpQueryTableCond(&pInfo->base.cond, &pInput->tblCond);
+    pInput->pReaderBlock = createOneDataBlock(pInfo->pResBlock, false);
+    pInput->pPageBlock = createOneDataBlock(pInfo->pResBlock, false);
+    STableKeyInfo* keyInfo = tableListGetInfo(pInfo->base.pTableListInfo, i + pInfo->tableStartIndex);
+    pInput->pKeyInfo = keyInfo;
+
+    if (isTaskKilled(pTaskInfo)) {
+      T_LONG_JMP(pTaskInfo->env, pTaskInfo->code);
+    }
+
+    if (i + 1 < pSubTblsInfo->numInMemReaders) {
+      pAPI->tsdReader.tsdReaderOpen(pHandle->vnode, &pInput->tblCond, keyInfo, 1, pInput->pReaderBlock,
+                                  (void**)&pInput->pReader, GET_TASKID(pTaskInfo), NULL);
+      pInput->bInMemReader = true;
+    } else {
+      pInput->pReader = NULL;
+      pInput->bInMemReader = false;
+    }
+    bool hasNext = true;
+    fetchNextSubTableBlockFromReader(pOperator, pInput, &hasNext);
+    if (!hasNext) {
+      pInput->rowIdx = -1;
+      ++pSubTblsInfo->numSubTablesCompleted;
+      continue;
+    } else {
+      pInput->rowIdx = 0;
+      pInput->pageIdx = -1;
+    }
+  }  
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t adjustSubTableFromMemBlock(SOperatorInfo* pOperatorInfo, STmsSubTablesMergeInfo* pSubTblsInfo) {
+  STableMergeScanInfo* pInfo = pOperatorInfo->info;
+  STmsSubTableInput* pInput = pSubTblsInfo->aInputs + tMergeTreeGetChosenIndex(pSubTblsInfo->pTree);
+  bool hasNext = true;
+  fetchNextSubTableBlockFromReader(pOperatorInfo, pInput, &hasNext);
+  if (!hasNext) {
+    pInput->rowIdx = -1;
+    ++pSubTblsInfo->numSubTablesCompleted;
+  } else {
+    pInput->rowIdx = 0;     
+  }
+  
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t adjustSubTableForNextRow(SOperatorInfo* pOperatorInfo, STmsSubTablesMergeInfo* pSubTblsInfo) {
+  STableMergeScanInfo* pInfo = pOperatorInfo->info;
+  STmsSubTableInput* pInput = pSubTblsInfo->aInputs + tMergeTreeGetChosenIndex(pSubTblsInfo->pTree);
+
+  SSDataBlock* pInputBlock = (pInput->type == SUB_TABLE_MEM_BLOCK) ? pInput->pReaderBlock : pInput->pPageBlock;
+  if (pInput->rowIdx < pInputBlock->info.rows - 1) {
+    ++pInput->rowIdx;
+  } else if (pInput->rowIdx == pInputBlock->info.rows -1 ) {
+    if (pInput->type == SUB_TABLE_MEM_BLOCK) {
+      adjustSubTableFromMemBlock(pOperatorInfo, pSubTblsInfo);
+    }
+    if (pInput->rowIdx != -1) {
+      SColumnInfoData* col = taosArrayGet(pInputBlock->pDataBlock, pSubTblsInfo->pOrderInfo->slotId);
+      pInput->aTs = (int64_t*)col->pData;
+    }
+  }
+
+  tMergeTreeAdjust(pSubTblsInfo->pTree, tMergeTreeGetAdjustIndex(pSubTblsInfo->pTree));
+
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t appendChosenRowToDataBlock(STmsSubTablesMergeInfo* pSubTblsInfo, SSDataBlock* pBlock) {
+  STmsSubTableInput* pInput = pSubTblsInfo->aInputs + tMergeTreeGetChosenIndex(pSubTblsInfo->pTree);
+  SSDataBlock* pInputBlock = (pInput->type == SUB_TABLE_MEM_BLOCK) ? pInput->pReaderBlock : pInput->pPageBlock;
+
+  for (int32_t i = 0; i < taosArrayGetSize(pBlock->pDataBlock); ++i) {
+    SColumnInfoData* pColInfo = taosArrayGet(pBlock->pDataBlock, i);
+
+    SColumnInfoData* pSrcColInfo = taosArrayGet(pInputBlock->pDataBlock, i);
+    bool             isNull = colDataIsNull(pSrcColInfo, pInputBlock->info.rows, pInput->rowIdx, NULL);
+
+    if (isNull) {
+      colDataSetVal(pColInfo, pBlock->info.rows, NULL, true);
+    } else {
+      if (pSrcColInfo->pData != NULL) {
+        char* pData = colDataGetData(pSrcColInfo, pInput->rowIdx);
+        colDataSetVal(pColInfo, pBlock->info.rows, pData, false);
+      }
+    }
+  }
+  pBlock->info.dataLoad = 1;
+  pBlock->info.scanFlag = pInputBlock->info.scanFlag;
+  pBlock->info.rows += 1;
+  return TSDB_CODE_SUCCESS;
+}
+
+static SSDataBlock* getSubTablesSortedBlock(SOperatorInfo* pOperator, SSDataBlock* pResBlock, int32_t capacity) {
+  STableMergeScanInfo* pInfo = pOperator->info;
+  SExecTaskInfo*       pTaskInfo = pOperator->pTaskInfo;
+  STmsSubTablesMergeInfo* pSubTblsInfo = pInfo->pSubTablesMergeInfo;
+
+  blockDataCleanup(pResBlock);
+  bool finished = false;
+  while (true) {
+    while (1) {
+      if (pSubTblsInfo->numSubTablesCompleted >= pSubTblsInfo->numSubTables) {
+        finished = true;
+        break;
+      }
+
+      appendChosenRowToDataBlock(pSubTblsInfo, pResBlock);
+      adjustSubTableForNextRow(pOperator, pSubTblsInfo);
+      
+      if (pResBlock->info.rows >= capacity) {
+        break;
+      }
+    }
+
+    if (isTaskKilled(pTaskInfo)) {
+      T_LONG_JMP(pOperator->pTaskInfo->env, pTaskInfo->code);
+    }
+
+    bool limitReached = applyLimitOffset(&pInfo->limitInfo, pResBlock, pTaskInfo);
+    if (finished || limitReached || pResBlock->info.rows > 0) {
+      break;
+    }
+  }
+  return (pResBlock->info.rows > 0) ? pResBlock : NULL;
+}
+
+static int32_t startSubTablesTableMergeScan(SOperatorInfo* pOperator) {
+  STableMergeScanInfo* pInfo = pOperator->info;
+
+  initSubTablesMergeInfo(pInfo);
+
+  initSubTableInputs(pOperator, pInfo);
+  
+  openSubTablesMergeSort(pInfo->pSubTablesMergeInfo);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t stopSubTablesTableMergeScan(STableMergeScanInfo* pInfo) {
+  STmsSubTablesMergeInfo* pSubTblsInfo = pInfo->pSubTablesMergeInfo;
+  if (pSubTblsInfo != NULL) {
+    tMergeTreeDestroy(&pSubTblsInfo->pTree);
+
+    for (int32_t i = 0; i < pSubTblsInfo->numSubTables; ++i) {
+      STmsSubTableInput* pInput =  pSubTblsInfo->aInputs + i;
+      taosMemoryFree(pInput->tblCond.colList);
+      blockDataDestroy(pInput->pReaderBlock);
+      blockDataDestroy(pInput->pPageBlock);
+      taosArrayDestroy(pInput->aBlockPages);
+      pInfo->base.readerAPI.tsdReaderClose(pInput->pReader);
+      pInput->pReader = NULL;
+    }
+
+    destroyDiskbasedBuf(pSubTblsInfo->pBlocksBuf);
+    taosMemoryFree(pSubTblsInfo->aInputs);
+
+    taosMemoryFree(pSubTblsInfo);
+    pInfo->pSubTablesMergeInfo = NULL;
+  }
+  taosMemoryTrim(0);
+  return TSDB_CODE_SUCCESS;
+}
+
+SSDataBlock* doTableMergeScanParaSubTables(SOperatorInfo* pOperator) {
+  if (pOperator->status == OP_EXEC_DONE) {
+    return NULL;
+  }
+
+  SExecTaskInfo*       pTaskInfo = pOperator->pTaskInfo;
+  STableMergeScanInfo* pInfo = pOperator->info;
+
+  int32_t code = pOperator->fpSet._openFn(pOperator);
+  if (code != TSDB_CODE_SUCCESS) {
+    T_LONG_JMP(pTaskInfo->env, code);
+  }
+
+  size_t tableListSize = tableListGetSize(pInfo->base.pTableListInfo);
+  if (!pInfo->hasGroupId) {
+    pInfo->hasGroupId = true;
+
+    if (tableListSize == 0) {
+      setOperatorCompleted(pOperator);
+      return NULL;
+    }
+    pInfo->tableStartIndex = 0;
+    pInfo->groupId = ((STableKeyInfo*)tableListGetInfo(pInfo->base.pTableListInfo, pInfo->tableStartIndex))->groupId;
+    startSubTablesTableMergeScan(pOperator);
+  }
+
+  SSDataBlock* pBlock = NULL;
+  while (pInfo->tableStartIndex < tableListSize) {
+    if (isTaskKilled(pTaskInfo)) {
+      T_LONG_JMP(pTaskInfo->env, pTaskInfo->code);
+    }
+
+    pBlock = getSubTablesSortedBlock(pOperator, pInfo->pResBlock, pOperator->resultInfo.capacity);
+    if (pBlock == NULL && !pInfo->bGroupProcessed && pInfo->needCountEmptyTable) {
+      STableKeyInfo* tbInfo = tableListGetInfo(pInfo->base.pTableListInfo, pInfo->tableStartIndex);
+      pBlock = getOneRowResultBlock(pTaskInfo, &pInfo->base, pInfo->pResBlock, tbInfo);
+    }
+    if (pBlock != NULL) {
+      pBlock->info.id.groupId = pInfo->groupId;
+      pOperator->resultInfo.totalRows += pBlock->info.rows;
+      pInfo->bGroupProcessed = true;
+      return pBlock;
+    } else {
+      // Data of this group are all dumped, let's try the next group
+      stopSubTablesTableMergeScan(pInfo);
+      if (pInfo->tableEndIndex >= tableListSize - 1) {
+        setOperatorCompleted(pOperator);
+        break;
+      }
+
+      pInfo->tableStartIndex = pInfo->tableEndIndex + 1;
+      pInfo->groupId = tableListGetInfo(pInfo->base.pTableListInfo, pInfo->tableStartIndex)->groupId;
+      startSubTablesTableMergeScan(pOperator);
+      resetLimitInfoForNextGroup(&pInfo->limitInfo);
+    }
+  }
+
+  return pBlock;
+}
+
+
 static void tableMergeScanDoSkipTable(uint64_t uid, void* pTableMergeScanInfo) {
   STableMergeScanInfo* pInfo = pTableMergeScanInfo;
   if (pInfo->mSkipTables == NULL) {
@@ -3575,15 +3983,6 @@ SArray* generateSortByTsInfo(SArray* colMatchInfo, int32_t order) {
   return pList;
 }
 
-int32_t dumpQueryTableCond(const SQueryTableDataCond* src, SQueryTableDataCond* dst) {
-  memcpy((void*)dst, (void*)src, sizeof(SQueryTableDataCond));
-  dst->colList = taosMemoryCalloc(src->numOfCols, sizeof(SColumnInfo));
-  for (int i = 0; i < src->numOfCols; i++) {
-    dst->colList[i] = src->colList[i];
-  }
-  return 0;
-}
-
 void tableMergeScanTsdbNotifyCb(ETsdReaderNotifyType type, STsdReaderNotifyInfo* info, void* param) {
   STableMergeScanInfo* pTmsInfo = param;
   if (type == TSD_READER_NOTIFY_DURATION_START) {
@@ -3671,8 +4070,6 @@ int32_t startGroupTableMergeScan(SOperatorInfo* pOperator) {
   int32_t tableStartIdx = pInfo->tableStartIndex;
   int32_t tableEndIdx = pInfo->tableEndIndex;
 
-  tSimpleHashClear(pInfo->mTableNumRows);
-
   int32_t numOfTable = tableEndIdx - tableStartIdx + 1;
   STableKeyInfo* startKeyInfo = tableListGetInfo(pInfo->base.pTableListInfo, tableStartIdx);
   pAPI->tsdReader.tsdReaderOpen(pHandle->vnode, &pInfo->base.cond, startKeyInfo, numOfTable, pInfo->pReaderBlock,
@@ -3823,10 +4220,8 @@ SSDataBlock* doTableMergeScan(SOperatorInfo* pOperator) {
 
 void destroyTableMergeScanOperatorInfo(void* param) {
   STableMergeScanInfo* pTableScanInfo = (STableMergeScanInfo*)param;
-  cleanupQueryTableDataCond(&pTableScanInfo->base.cond);
-
-  int32_t numOfTable = taosArrayGetSize(pTableScanInfo->sortSourceParams);
 
+  // start one reader variable
   pTableScanInfo->base.readerAPI.tsdReaderClose(pTableScanInfo->base.dataReader);
   pTableScanInfo->base.dataReader = NULL;
 
@@ -3837,18 +4232,22 @@ void destroyTableMergeScanOperatorInfo(void* param) {
     }
   }
 
-  taosArrayDestroy(pTableScanInfo->sortSourceParams);
   tsortDestroySortHandle(pTableScanInfo->pSortHandle);
   pTableScanInfo->pSortHandle = NULL;
   taosHashCleanup(pTableScanInfo->mSkipTables);
   pTableScanInfo->mSkipTables = NULL;
+  pTableScanInfo->pSortInputBlock = blockDataDestroy(pTableScanInfo->pSortInputBlock);
+  // end one reader variable
+
+  cleanupQueryTableDataCond(&pTableScanInfo->base.cond);
   destroyTableScanBase(&pTableScanInfo->base, &pTableScanInfo->base.readerAPI);
 
   pTableScanInfo->pResBlock = blockDataDestroy(pTableScanInfo->pResBlock);
-  pTableScanInfo->pSortInputBlock = blockDataDestroy(pTableScanInfo->pSortInputBlock);
   pTableScanInfo->pReaderBlock = blockDataDestroy(pTableScanInfo->pReaderBlock);
-
   taosArrayDestroy(pTableScanInfo->pSortInfo);
+
+  stopSubTablesTableMergeScan(pTableScanInfo);
+
   taosMemoryFreeClear(param);
 }
 
@@ -3922,14 +4321,6 @@ SOperatorInfo* createTableMergeScanOperatorInfo(STableScanPhysiNode* pTableScanN
     goto _error;
   }
 
-  initResultSizeInfo(&pOperator->resultInfo, 1024);
-  pInfo->pResBlock = createDataBlockFromDescNode(pDescNode);
-  blockDataEnsureCapacity(pInfo->pResBlock, pOperator->resultInfo.capacity);
-
-  pInfo->sortSourceParams = taosArrayInit(64, sizeof(STableMergeScanSortSourceParam));
-
-  pInfo->pSortInfo = generateSortByTsInfo(pInfo->base.matchInfo.pList, pInfo->base.cond.order);
-  pInfo->pSortInputBlock = createOneDataBlock(pInfo->pResBlock, false);
   initLimitInfo(pTableScanNode->scan.node.pLimit, pTableScanNode->scan.node.pSlimit, &pInfo->limitInfo);
 
   pInfo->mergeLimit = -1;
@@ -3938,24 +4329,37 @@ SOperatorInfo* createTableMergeScanOperatorInfo(STableScanPhysiNode* pTableScanN
     pInfo->mergeLimit = pInfo->limitInfo.limit.limit + pInfo->limitInfo.limit.offset;
     pInfo->mSkipTables = NULL;
   }
+  
+  initResultSizeInfo(&pOperator->resultInfo, 1024);
+  pInfo->pResBlock = createDataBlockFromDescNode(pDescNode);
+  blockDataEnsureCapacity(pInfo->pResBlock, pOperator->resultInfo.capacity);
+
+  pInfo->pSortInfo = generateSortByTsInfo(pInfo->base.matchInfo.pList, pInfo->base.cond.order);
   pInfo->pReaderBlock = createOneDataBlock(pInfo->pResBlock, false);
 
+  pInfo->needCountEmptyTable = tsCountAlwaysReturnValue && pTableScanNode->needCountEmptyTable;
+
   int32_t  rowSize = pInfo->pResBlock->info.rowSize;
   uint32_t nCols = taosArrayGetSize(pInfo->pResBlock->pDataBlock);
   pInfo->bufPageSize = getProperSortPageSize(rowSize, nCols);
+
+  //start one reader variable
+  pInfo->pSortInputBlock = createOneDataBlock(pInfo->pResBlock, false);
+
   if (!tsExperimental) {
     pInfo->filesetDelimited = false;
   } else {
     pInfo->filesetDelimited = pTableScanNode->filesetDelimited;
   }
-  pInfo->needCountEmptyTable = tsCountAlwaysReturnValue && pTableScanNode->needCountEmptyTable;
+  // end one reader variable
-  
   setOperatorInfo(pOperator, "TableMergeScanOperator", QUERY_NODE_PHYSICAL_PLAN_TABLE_MERGE_SCAN, false, OP_NOT_OPENED,
                   pInfo, pTaskInfo);
   pOperator->exprSupp.numOfExprs = numOfCols;
 
-  pOperator->fpSet = createOperatorFpSet(optrDummyOpenFn, doTableMergeScan, NULL, destroyTableMergeScanOperatorInfo,
+  pOperator->fpSet = createOperatorFpSet(
-                                         optrDefaultBufFn, getTableMergeScanExplainExecInfo, optrDefaultGetNextExtFn, NULL);
+      optrDummyOpenFn, pTableScanNode->paraTablesSort ? doTableMergeScanParaSubTables : doTableMergeScan, NULL,
+      destroyTableMergeScanOperatorInfo, optrDefaultBufFn, getTableMergeScanExplainExecInfo, optrDefaultGetNextExtFn,
+      NULL);
   pOperator->cost.openCost = 0;
   return pOperator;
 

source/libs/executor/src/streamcountwindowoperator.c

@@ -164,7 +164,7 @@ void getCountWinRange(SStreamAggSupporter* pAggSup, const SSessionKey* pKey, ESt
   } else {
     pCur = pAggSup->stateStore.streamStateSessionSeekKeyCurrentNext(pAggSup->pState, pKey);
   }
-  SSessionKey tmpKey = {0};
+  SSessionKey tmpKey = {.groupId = pKey->groupId, .win.ekey = INT64_MIN, .win.skey = INT64_MIN};
   int32_t code = pAggSup->stateStore.streamStateSessionGetKVByCur(pCur, &tmpKey, NULL, 0);
   if (code != TSDB_CODE_SUCCESS) {
     pAggSup->stateStore.streamStateFreeCur(pCur);

source/libs/index/src/index.c

@@ -459,7 +459,7 @@ static void idxInterRsltDestroy(SArray* results) {
 
 static int idxMergeFinalResults(SArray* in, EIndexOperatorType oType, SArray* out) {
   // refactor, merge interResults into fResults by oType
-  for (int i = 0; i < taosArrayGetSize(in); i--) {
+  for (int i = 0; i < taosArrayGetSize(in); i++) {
     SArray* t = taosArrayGetP(in, i);
     taosArraySort(t, uidCompare);
     taosArrayRemoveDuplicate(t, uidCompare, NULL);

source/libs/index/src/indexFilter.c

@@ -17,6 +17,7 @@
 #include "index.h"
 #include "indexComm.h"
 #include "indexInt.h"
+#include "indexUtil.h"
 #include "nodes.h"
 #include "querynodes.h"
 #include "scalar.h"
@@ -77,15 +78,15 @@ typedef struct SIFParam {
   char          dbName[TSDB_DB_NAME_LEN];
   char          colName[TSDB_COL_NAME_LEN * 2 + 4];
 
-  SIndexMetaArg arg;
+  SIndexMetaArg      arg;
   SMetaDataFilterAPI api;
 } SIFParam;
 
 typedef struct SIFCtx {
-  int32_t       code;
+  int32_t             code;
-  SHashObj     *pRes;    /* element is SIFParam */
+  SHashObj           *pRes;    /* element is SIFParam */
-  bool          noExec;  // true: just iterate condition tree, and add hint to executor plan
+  bool                noExec;  // true: just iterate condition tree, and add hint to executor plan
-  SIndexMetaArg arg;
+  SIndexMetaArg       arg;
   SMetaDataFilterAPI *pAPI;
 } SIFCtx;
 
@@ -669,6 +670,10 @@ static int32_t sifDoIndex(SIFParam *left, SIFParam *right, int8_t operType, SIFP
       if (sifSetFltParam(left, right, &typedata, &param) != 0) return -1;
     }
     ret = left->api.metaFilterTableIds(arg->metaEx, &param, output->result);
+    if (ret == 0) {
+      taosArraySort(output->result, uidCompare);
+      taosArrayRemoveDuplicate(output->result, uidCompare, NULL);
+    }
   }
   return ret;
 }
@@ -875,8 +880,8 @@ static int32_t sifExecLogic(SLogicConditionNode *node, SIFCtx *ctx, SIFParam *ou
       } else if (node->condType == LOGIC_COND_TYPE_NOT) {
         // taosArrayAddAll(output->result, params[m].result);
       }
-      taosArraySort(output->result, idxUidCompare);
+      taosArraySort(output->result, uidCompare);
-      taosArrayRemoveDuplicate(output->result, idxUidCompare, NULL);
+      taosArrayRemoveDuplicate(output->result, uidCompare, NULL);
     }
   } else {
     for (int32_t m = 0; m < node->pParameterList->length; m++) {
@@ -1016,7 +1021,7 @@ static int32_t sifCalculate(SNode *pNode, SIFParam *pDst) {
   return code;
 }
 
-static int32_t sifGetFltHint(SNode *pNode, SIdxFltStatus *status, SMetaDataFilterAPI* pAPI) {
+static int32_t sifGetFltHint(SNode *pNode, SIdxFltStatus *status, SMetaDataFilterAPI *pAPI) {
   int32_t code = TSDB_CODE_SUCCESS;
   if (pNode == NULL) {
     return TSDB_CODE_QRY_INVALID_INPUT;
@@ -1054,7 +1059,8 @@ static int32_t sifGetFltHint(SNode *pNode, SIdxFltStatus *status, SMetaDataFilte
   return code;
 }
 
-int32_t doFilterTag(SNode *pFilterNode, SIndexMetaArg *metaArg, SArray *result, SIdxFltStatus *status, SMetaDataFilterAPI* pAPI) {
+int32_t doFilterTag(SNode *pFilterNode, SIndexMetaArg *metaArg, SArray *result, SIdxFltStatus *status,
+                    SMetaDataFilterAPI *pAPI) {
   SIdxFltStatus st = idxGetFltStatus(pFilterNode, pAPI);
   if (st == SFLT_NOT_INDEX) {
     *status = st;
@@ -1081,7 +1087,7 @@ int32_t doFilterTag(SNode *pFilterNode, SIndexMetaArg *metaArg, SArray *result,
   return TSDB_CODE_SUCCESS;
 }
 
-SIdxFltStatus idxGetFltStatus(SNode *pFilterNode, SMetaDataFilterAPI* pAPI) {
+SIdxFltStatus idxGetFltStatus(SNode *pFilterNode, SMetaDataFilterAPI *pAPI) {
   SIdxFltStatus st = SFLT_NOT_INDEX;
   if (pFilterNode == NULL) {
     return SFLT_NOT_INDEX;

source/libs/nodes/src/nodesCloneFuncs.c

@@ -456,6 +456,7 @@ static int32_t logicScanCopy(const SScanLogicNode* pSrc, SScanLogicNode* pDst) {
   COPY_SCALAR_FIELD(filesetDelimited);
   COPY_SCALAR_FIELD(isCountByTag);
   CLONE_OBJECT_FIELD(pFuncTypes, functParamClone);
+  COPY_SCALAR_FIELD(paraTablesSort);
   return TSDB_CODE_SUCCESS;
 }
 
@@ -688,6 +689,7 @@ static int32_t physiTableScanCopy(const STableScanPhysiNode* pSrc, STableScanPhy
   COPY_SCALAR_FIELD(igExpired);
   COPY_SCALAR_FIELD(filesetDelimited);
   COPY_SCALAR_FIELD(needCountEmptyTable);
+  COPY_SCALAR_FIELD(paraTablesSort);
   return TSDB_CODE_SUCCESS;
 }
 

source/libs/nodes/src/nodesCodeFuncs.c

@@ -698,6 +698,7 @@ static const char* jkScanLogicPlanTagCond = "TagCond";
 static const char* jkScanLogicPlanGroupTags = "GroupTags";
 static const char* jkScanLogicPlanOnlyMetaCtbIdx = "OnlyMetaCtbIdx";
 static const char* jkScanLogicPlanFilesetDelimited = "FilesetDelimited";
+static const char* jkScanLogicPlanParaTablesSort = "ParaTablesSort";
 
 static int32_t logicScanNodeToJson(const void* pObj, SJson* pJson) {
   const SScanLogicNode* pNode = (const SScanLogicNode*)pObj;
@@ -745,6 +746,9 @@ static int32_t logicScanNodeToJson(const void* pObj, SJson* pJson) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddBoolToObject(pJson, jkScanLogicPlanFilesetDelimited, pNode->filesetDelimited);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddBoolToObject(pJson, jkScanLogicPlanParaTablesSort, pNode->paraTablesSort);
+  }
   return code;
 }
 
@@ -795,6 +799,9 @@ static int32_t jsonToLogicScanNode(const SJson* pJson, void* pObj) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonGetBoolValue(pJson, jkScanLogicPlanFilesetDelimited, &pNode->filesetDelimited);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetBoolValue(pJson, jkScanLogicPlanParaTablesSort, &pNode->paraTablesSort);
+  }
   return code;
 }
 
@@ -1888,6 +1895,7 @@ static const char* jkTableScanPhysiPlanAssignBlockUid = "AssignBlockUid";
 static const char* jkTableScanPhysiPlanIgnoreUpdate = "IgnoreUpdate";
 static const char* jkTableScanPhysiPlanFilesetDelimited = "FilesetDelimited";
 static const char* jkTableScanPhysiPlanNeedCountEmptyTable = "NeedCountEmptyTable";
+static const char* jkTableScanPhysiPlanParaTablesSort = "ParaTablesSort";
 
 static int32_t physiTableScanNodeToJson(const void* pObj, SJson* pJson) {
   const STableScanPhysiNode* pNode = (const STableScanPhysiNode*)pObj;
@@ -1962,6 +1970,9 @@ static int32_t physiTableScanNodeToJson(const void* pObj, SJson* pJson) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonAddBoolToObject(pJson, jkTableScanPhysiPlanNeedCountEmptyTable, pNode->needCountEmptyTable);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddBoolToObject(pJson, jkTableScanPhysiPlanParaTablesSort, pNode->paraTablesSort);
+  }
   return code;
 }
 
@@ -2038,6 +2049,9 @@ static int32_t jsonToPhysiTableScanNode(const SJson* pJson, void* pObj) {
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonGetBoolValue(pJson, jkTableScanPhysiPlanNeedCountEmptyTable, &pNode->needCountEmptyTable);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetBoolValue(pJson, jkTableScanPhysiPlanParaTablesSort, &pNode->paraTablesSort);
+  }
   return code;
 }
 

source/libs/nodes/src/nodesMsgFuncs.c

@@ -2185,6 +2185,9 @@ static int32_t physiTableScanNodeInlineToMsg(const void* pObj, STlvEncoder* pEnc
   if (TSDB_CODE_SUCCESS == code) {
     code = tlvEncodeValueBool(pEncoder, pNode->needCountEmptyTable);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeValueBool(pEncoder, pNode->paraTablesSort);
+  }
   return code;
 }
 
@@ -2269,6 +2272,9 @@ static int32_t msgToPhysiTableScanNodeInline(STlvDecoder* pDecoder, void* pObj)
   if (TSDB_CODE_SUCCESS == code) {
     code = tlvDecodeValueBool(pDecoder, &pNode->needCountEmptyTable);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvDecodeValueBool(pDecoder, &pNode->paraTablesSort);
+  }
   return code;
 }
 

source/libs/parser/src/parAstCreater.c

@@ -401,6 +401,9 @@ bool addHintNodeToList(SAstCreateContext* pCxt, SNodeList** ppHintList, EHintOpt
     case HINT_PARTITION_FIRST:
       if (paramNum > 0 || hasHint(*ppHintList, HINT_SORT_FOR_GROUP)) return true;
       break;
+    case HINT_PARA_TABLES_SORT:
+      if (paramNum > 0 || hasHint(*ppHintList, HINT_PARA_TABLES_SORT)) return true;
+      break;
     default:
       return true;
   }
@@ -479,6 +482,14 @@ SNodeList* createHintNodeList(SAstCreateContext* pCxt, const SToken* pLiteral) {
         }
         opt = HINT_PARTITION_FIRST;
         break;
+      case TK_PARA_TABLES_SORT:
+        lastComma = false;
+        if (0 != opt || inParamList) {
+          quit = true;
+          break;
+        }
+        opt = HINT_PARA_TABLES_SORT;
+        break;
       case TK_NK_LP:
         lastComma = false;
         if (0 == opt || inParamList) {

source/libs/parser/src/parTokenizer.c

@@ -173,6 +173,7 @@ static SKeyword keywordTable[] = {
     {"OUTPUTTYPE",           TK_OUTPUTTYPE},
     {"PAGES",                TK_PAGES},
     {"PAGESIZE",             TK_PAGESIZE},
+    {"PARA_TABLES_SORT",     TK_PARA_TABLES_SORT},
     {"PARTITION",            TK_PARTITION},
     {"PARTITION_FIRST",      TK_PARTITION_FIRST},
     {"PASS",                 TK_PASS},

source/libs/planner/inc/planInt.h

@@ -47,6 +47,7 @@ int32_t validateQueryPlan(SPlanContext* pCxt, SQueryPlan* pPlan);
 
 bool        getBatchScanOptionFromHint(SNodeList* pList);
 bool        getSortForGroupOptHint(SNodeList* pList);
+bool        getparaTablesSortOptHint(SNodeList* pList);
 bool        getOptHint(SNodeList* pList, EHintOption hint);
 SLogicNode* getLogicNodeRootNode(SLogicNode* pCurr);
 int32_t     collectTableAliasFromNodes(SNode* pNode, SSHashObj** ppRes);

source/libs/planner/src/planLogicCreater.c

@@ -501,7 +501,7 @@ static int32_t createScanLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSelect
   } else {
     nodesDestroyNode((SNode*)pScan);
   }
-
+  pScan->paraTablesSort = getparaTablesSortOptHint(pSelect->pHint);
   pCxt->hasScan = true;
 
   return code;

source/libs/planner/src/planPhysiCreater.c

@@ -651,6 +651,7 @@ static int32_t createTableScanPhysiNode(SPhysiPlanContext* pCxt, SSubplan* pSubp
   pTableScan->assignBlockUid = pCxt->pPlanCxt->rSmaQuery ? true : false;
   pTableScan->filesetDelimited = pScanLogicNode->filesetDelimited;
   pTableScan->needCountEmptyTable = pScanLogicNode->isCountByTag;
+  pTableScan->paraTablesSort = pScanLogicNode->paraTablesSort;
 
   int32_t code = createScanPhysiNodeFinalize(pCxt, pSubplan, pScanLogicNode, (SScanPhysiNode*)pTableScan, pPhyNode);
   if (TSDB_CODE_SUCCESS == code) {

source/libs/planner/src/planUtil.c

@@ -466,6 +466,18 @@ bool getOptHint(SNodeList* pList, EHintOption hint) {
   return false;
 }
 
+bool getparaTablesSortOptHint(SNodeList* pList) {
+  if (!pList) return false;
+  SNode* pNode;
+  FOREACH(pNode, pList) {
+    SHintNode* pHint = (SHintNode*)pNode;
+    if (pHint->option == HINT_PARA_TABLES_SORT) {
+      return true;
+    }
+  }
+  return false;
+}
+
 int32_t collectTableAliasFromNodes(SNode* pNode, SSHashObj** ppRes) {
   int32_t code = TSDB_CODE_SUCCESS;
   SLogicNode* pCurr = (SLogicNode*)pNode;

source/libs/transport/src/transCli.c

@@ -961,7 +961,7 @@ static void cliSendCb(uv_write_t* req, int status) {
       tTrace("%s conn %p send cost:%dus ", CONN_GET_INST_LABEL(pConn), pConn, (int)cost);
     }
   }
-  if (pMsg->msg.contLen == 0 && pMsg->msg.pCont != 0) {
+  if (pMsg != NULL && pMsg->msg.contLen == 0 && pMsg->msg.pCont != 0) {
     rpcFreeCont(pMsg->msg.pCont);
     pMsg->msg.pCont = 0;
   }

tests/parallel_test/cases.task

@@ -57,6 +57,8 @@
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/hint.py -Q 2
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/hint.py -Q 3
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/hint.py -Q 4
+,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/para_tms.py
+,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/para_tms2.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/nestedQuery.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/nestedQuery_str.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/nestedQuery_math.py

tests/script/tsim/parser/groupby.sim

@@ -656,7 +656,9 @@ if $data31 != 4 then
 endi
 
 sql_error select irate(c) from st where t1="1" and ts >= '2020-03-27 04:11:17.732' and ts < '2020-03-27 05:11:17.732'  interval(1m) sliding(15s) group by tbname,c;
+print select _wstart, irate(c), tbname, t1, t2 from st where t1=1 and ts >= '2020-03-27 04:11:17.732' and ts < '2020-03-27 05:11:17.732' partition by tbname,t1,t2 interval(1m) sliding(15s) order by tbname;
 sql select _wstart, irate(c), tbname, t1, t2 from st where t1=1 and ts >= '2020-03-27 04:11:17.732' and ts < '2020-03-27 05:11:17.732' partition by tbname,t1,t2 interval(1m) sliding(15s) order by tbname;
+print $rows
 if $rows != 40 then
   return -1
 endi