#4983

Committed 13 Mar 2026 03:38AM UTC coverage: 68.653% (+0.07%) from 68.587%

Build # #4983

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push

travis-ci

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web-flow

Commit Message

feat/6641435300-save-audit-in-self (#34738)

Run Details

434 of 584 new or added lines in 10 files covered. (74.32%)

434 existing lines in 121 files now uncovered.

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76.41

/source/libs/executor/src/executil.c

/*
 * 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/>.
 */

#include "function.h"
#include "functionMgt.h"
#include "index.h"
#include "os.h"
#include "query.h"
#include "querynodes.h"
#include "taoserror.h"
#include "tarray.h"
#include "tcompare.h"
#include "tdatablock.h"
#include "thash.h"
#include "tmsg.h"
#include "ttime.h"

#include "executil.h"
#include "executorInt.h"
#include "querytask.h"
#include "storageapi.h"
#include "ttypes.h"
#include "tutil.h"
#include "tjson.h"
#include "trpc.h"
#include "filter.h"
#include "operator.h"
#include "tref.h"

typedef struct tagFilterAssist {
  SHashObj* colHash;
  int32_t   index;
  SArray*   cInfoList;
  int32_t   code;
} tagFilterAssist;

typedef struct STransTagExprCtx {
  int32_t      code;
  SMetaReader* pReader;
} STransTagExprCtx;

typedef enum {
  FILTER_NO_LOGIC = 1,
  FILTER_AND,
  FILTER_OTHER,
} FilterCondType;

static int32_t optimizeTbnameInCondImpl(void* pVnode, SArray* list, SNode* pTagCond, SStorageAPI* pStoreAPI,
                                        uint64_t suid);

static int64_t getLimit(const SNode* pLimit) {
  return (NULL == pLimit || NULL == ((SLimitNode*)pLimit)->limit) ? -1 : ((SLimitNode*)pLimit)->limit->datum.i;
}
static int64_t getOffset(const SNode* pLimit) {
  return (NULL == pLimit || NULL == ((SLimitNode*)pLimit)->offset) ? -1 : ((SLimitNode*)pLimit)->offset->datum.i;
}
static void releaseColInfoData(void* pCol);
int32_t sendFetchRemoteNodeReq(STaskSubJobCtx* ctx, int32_t subQIdx, SNode* pRes);

void initResultRowInfo(SResultRowInfo* pResultRowInfo) {
  pResultRowInfo->size = 0;
  pResultRowInfo->cur.pageId = -1;
}

void closeResultRow(SResultRow* pResultRow) { pResultRow->closed = true; }

void resetResultRow(SResultRow* pResultRow, size_t entrySize) {
  pResultRow->numOfRows = 0;
  pResultRow->nOrigRows = 0;
  pResultRow->closed = false;
  pResultRow->endInterp = false;
  pResultRow->startInterp = false;

  if (entrySize > 0) {
    memset(pResultRow->pEntryInfo, 0, entrySize);
  }
}

// TODO refactor: use macro
SResultRowEntryInfo* getResultEntryInfo(const SResultRow* pRow, int32_t index, const int32_t* offset) {
  return (SResultRowEntryInfo*)((char*)pRow->pEntryInfo + offset[index]);
}

size_t getResultRowSize(SqlFunctionCtx* pCtx, int32_t numOfOutput) {
  int32_t rowSize = (numOfOutput * sizeof(SResultRowEntryInfo)) + sizeof(SResultRow);

  for (int32_t i = 0; i < numOfOutput; ++i) {
    rowSize += pCtx[i].resDataInfo.interBufSize;
  }

  return rowSize;
}

// Convert buf read from rocksdb to result row
int32_t getResultRowFromBuf(SExprSupp* pSup, const char* inBuf, size_t inBufSize, char** outBuf, size_t* outBufSize) {
  if (inBuf == NULL || pSup == NULL) {
    qError("invalid input parameters, inBuf:%p, pSup:%p", inBuf, pSup);
    return TSDB_CODE_INVALID_PARA;
  }
  SqlFunctionCtx* pCtx = pSup->pCtx;
  int32_t*        offset = pSup->rowEntryInfoOffset;
  SResultRow*     pResultRow = NULL;
  size_t          processedSize = 0;
  int32_t         code = TSDB_CODE_SUCCESS;

  // calculate the size of output buffer
  *outBufSize = getResultRowSize(pCtx, pSup->numOfExprs);
  *outBuf = taosMemoryMalloc(*outBufSize);
  if (*outBuf == NULL) {
    qError("failed to allocate memory for output buffer, size:%zu", *outBufSize);
    return terrno;
  }
  pResultRow = (SResultRow*)*outBuf;
  (void)memcpy(pResultRow, inBuf, sizeof(SResultRow));
  inBuf += sizeof(SResultRow);
  processedSize += sizeof(SResultRow);

  for (int32_t i = 0; i < pSup->numOfExprs; ++i) {
    int32_t len = *(int32_t*)inBuf;
    inBuf += sizeof(int32_t);
    processedSize += sizeof(int32_t);
    if (pResultRow->version != FUNCTION_RESULT_INFO_VERSION && pCtx->fpSet.decode) {
      code = pCtx->fpSet.decode(&pCtx[i], inBuf, getResultEntryInfo(pResultRow, i, offset), pResultRow->version);
      if (code != TSDB_CODE_SUCCESS) {
        qError("failed to decode result row, code:%d", code);
        return code;
      }
    } else {
      (void)memcpy(getResultEntryInfo(pResultRow, i, offset), inBuf, len);
    }
    inBuf += len;
    processedSize += len;
  }

  if (processedSize < inBufSize) {
    // stream stores extra data after result row
    size_t leftLen = inBufSize - processedSize;
    TAOS_MEMORY_REALLOC(*outBuf, *outBufSize + leftLen);
    if (*outBuf == NULL) {
      qError("failed to reallocate memory for output buffer, size:%zu", *outBufSize + leftLen);
      return terrno;
    }
    (void)memcpy(*outBuf + *outBufSize, inBuf, leftLen);
    inBuf += leftLen;
    processedSize += leftLen;
    *outBufSize += leftLen;
  }

  qTrace("[StreamInternal] get result inBufSize:%zu, outBufSize:%zu", inBufSize, *outBufSize);
  return TSDB_CODE_SUCCESS;
}

// Convert result row to buf for rocksdb
int32_t putResultRowToBuf(SExprSupp* pSup, const char* inBuf, size_t inBufSize, char** outBuf, size_t* outBufSize) {
  if (pSup == NULL || inBuf == NULL || outBuf == NULL || outBufSize == NULL) {
    qError("invalid input parameters, inBuf:%p, pSup:%p, outBufSize:%p, outBuf:%p", inBuf, pSup, outBufSize, outBuf);
    return TSDB_CODE_INVALID_PARA;
  }

  SqlFunctionCtx* pCtx = pSup->pCtx;
  int32_t*        offset = pSup->rowEntryInfoOffset;
  SResultRow*     pResultRow = (SResultRow*)inBuf;
  size_t          rowSize = getResultRowSize(pCtx, pSup->numOfExprs);

  if (rowSize > inBufSize) {
    qError("invalid input buffer size, rowSize:%zu, inBufSize:%zu", rowSize, inBufSize);
    return TSDB_CODE_INVALID_PARA;
  }

  // calculate the size of output buffer
  *outBufSize = rowSize + sizeof(int32_t) * pSup->numOfExprs;
  if (rowSize < inBufSize) {
    *outBufSize += inBufSize - rowSize;
  }

  *outBuf = taosMemoryMalloc(*outBufSize);
  if (*outBuf == NULL) {
    qError("failed to allocate memory for output buffer, size:%zu", *outBufSize);
    return terrno;
  }

  char* pBuf = *outBuf;
  pResultRow->version = FUNCTION_RESULT_INFO_VERSION;
  (void)memcpy(pBuf, pResultRow, sizeof(SResultRow));
  pBuf += sizeof(SResultRow);
  for (int32_t i = 0; i < pSup->numOfExprs; ++i) {
    size_t len = sizeof(SResultRowEntryInfo) + pCtx[i].resDataInfo.interBufSize;
    *(int32_t*)pBuf = (int32_t)len;
    pBuf += sizeof(int32_t);
    (void)memcpy(pBuf, getResultEntryInfo(pResultRow, i, offset), len);
    pBuf += len;
  }

  if (rowSize < inBufSize) {
    // stream stores extra data after result row
    size_t leftLen = inBufSize - rowSize;
    (void)memcpy(pBuf, inBuf + rowSize, leftLen);
    pBuf += leftLen;
  }

  qTrace("[StreamInternal] put result inBufSize:%zu, outBufSize:%zu", inBufSize, *outBufSize);
  return TSDB_CODE_SUCCESS;
}

static void freeEx(void* p) { taosMemoryFree(*(void**)p); }

void cleanupGroupResInfo(SGroupResInfo* pGroupResInfo) {
  taosMemoryFreeClear(pGroupResInfo->pBuf);
  if (pGroupResInfo->freeItem) {
    //    taosArrayDestroy(pGroupResInfo->pRows);
    taosArrayDestroyEx(pGroupResInfo->pRows, freeEx);
    pGroupResInfo->freeItem = false;
    pGroupResInfo->pRows = NULL;
  } else {
    taosArrayDestroy(pGroupResInfo->pRows);
    pGroupResInfo->pRows = NULL;
  }
  pGroupResInfo->index = 0;
  pGroupResInfo->delIndex = 0;
}

int32_t resultrowComparAsc(const void* p1, const void* p2) {
  SResKeyPos* pp1 = *(SResKeyPos**)p1;
  SResKeyPos* pp2 = *(SResKeyPos**)p2;

  if (pp1->groupId == pp2->groupId) {
    int64_t pts1 = *(int64_t*)pp1->key;
    int64_t pts2 = *(int64_t*)pp2->key;

    if (pts1 == pts2) {
      return 0;
    } else {
      return pts1 < pts2 ? -1 : 1;
    }
  } else {
    return pp1->groupId < pp2->groupId ? -1 : 1;
  }
}

static int32_t resultrowComparDesc(const void* p1, const void* p2) { return resultrowComparAsc(p2, p1); }

int32_t initGroupedResultInfo(SGroupResInfo* pGroupResInfo, SSHashObj* pHashmap, int32_t order) {
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;
  if (pGroupResInfo->pRows != NULL) {
    taosArrayDestroy(pGroupResInfo->pRows);
  }
  if (pGroupResInfo->pBuf) {
    taosMemoryFree(pGroupResInfo->pBuf);
    pGroupResInfo->pBuf = NULL;
  }

  // extract the result rows information from the hash map
  int32_t size = tSimpleHashGetSize(pHashmap);

  void* pData = NULL;
  pGroupResInfo->pRows = taosArrayInit(size, POINTER_BYTES);
  QUERY_CHECK_NULL(pGroupResInfo->pRows, code, lino, _end, terrno);

  size_t  keyLen = 0;
  int32_t iter = 0;
  int64_t bufLen = 0, offset = 0;

  // todo move away and record this during create window
  while ((pData = tSimpleHashIterate(pHashmap, pData, &iter)) != NULL) {
    /*void* key = */ (void)tSimpleHashGetKey(pData, &keyLen);
    bufLen += keyLen + sizeof(SResultRowPosition);
  }

  pGroupResInfo->pBuf = taosMemoryMalloc(bufLen);
  QUERY_CHECK_NULL(pGroupResInfo->pBuf, code, lino, _end, terrno);

  iter = 0;
  while ((pData = tSimpleHashIterate(pHashmap, pData, &iter)) != NULL) {
    void* key = tSimpleHashGetKey(pData, &keyLen);

    SResKeyPos* p = (SResKeyPos*)(pGroupResInfo->pBuf + offset);

    p->groupId = *(uint64_t*)key;
    p->pos = *(SResultRowPosition*)pData;
    memcpy(p->key, (char*)key + sizeof(uint64_t), keyLen - sizeof(uint64_t));
    void* tmp = taosArrayPush(pGroupResInfo->pRows, &p);
    QUERY_CHECK_NULL(pGroupResInfo->pBuf, code, lino, _end, terrno);

    offset += keyLen + sizeof(struct SResultRowPosition);
  }

  if (order == TSDB_ORDER_ASC || order == TSDB_ORDER_DESC) {
    __compar_fn_t fn = (order == TSDB_ORDER_ASC) ? resultrowComparAsc : resultrowComparDesc;
    size = POINTER_BYTES;
    taosSort(pGroupResInfo->pRows->pData, taosArrayGetSize(pGroupResInfo->pRows), size, fn);
  }

  pGroupResInfo->index = 0;

_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  return code;
}

void initMultiResInfoFromArrayList(SGroupResInfo* pGroupResInfo, SArray* pArrayList) {
  if (pGroupResInfo->pRows != NULL) {
    taosArrayDestroy(pGroupResInfo->pRows);
  }

  pGroupResInfo->freeItem = true;
  pGroupResInfo->pRows = pArrayList;
  pGroupResInfo->index = 0;
  pGroupResInfo->delIndex = 0;
}

bool hasRemainResults(SGroupResInfo* pGroupResInfo) {
  if (pGroupResInfo->pRows == NULL) {
    return false;
  }

  return pGroupResInfo->index < taosArrayGetSize(pGroupResInfo->pRows);
}

int32_t getNumOfTotalRes(SGroupResInfo* pGroupResInfo) {
  if (pGroupResInfo->pRows == 0) {
    return 0;
  }

  return (int32_t)taosArrayGetSize(pGroupResInfo->pRows);
}

SArray* createSortInfo(SNodeList* pNodeList) {
  size_t numOfCols = 0;

  if (pNodeList != NULL) {
    numOfCols = LIST_LENGTH(pNodeList);
  } else {
    numOfCols = 0;
  }

  SArray* pList = taosArrayInit(numOfCols, sizeof(SBlockOrderInfo));
  if (pList == NULL) {
    return pList;
  }

  for (int32_t i = 0; i < numOfCols; ++i) {
    SOrderByExprNode* pSortKey = (SOrderByExprNode*)nodesListGetNode(pNodeList, i);
    if (!pSortKey) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
      taosArrayDestroy(pList);
      pList = NULL;
      terrno = TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
      break;
    }
    SBlockOrderInfo bi = {0};
    bi.order = (pSortKey->order == ORDER_ASC) ? TSDB_ORDER_ASC : TSDB_ORDER_DESC;
    bi.nullFirst = (pSortKey->nullOrder == NULL_ORDER_FIRST);

    if (nodeType(pSortKey->pExpr) != QUERY_NODE_COLUMN) {
      qError("invalid order by expr type:%d", nodeType(pSortKey->pExpr));
      taosArrayDestroy(pList);
      pList = NULL;
      terrno = TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
      break;
    }
    
    SColumnNode* pColNode = (SColumnNode*)pSortKey->pExpr;
    bi.slotId = pColNode->slotId;
    void* tmp = taosArrayPush(pList, &bi);
    if (!tmp) {
      taosArrayDestroy(pList);
      pList = NULL;
      break;
    }
  }

  return pList;
}

SSDataBlock* createDataBlockFromDescNode(void* p) {
  SDataBlockDescNode* pNode = (SDataBlockDescNode*)p;
  int32_t      numOfCols = LIST_LENGTH(pNode->pSlots);
  SSDataBlock* pBlock = NULL;
  int32_t      code = TSDB_CODE_SUCCESS;
  int32_t      lino = 0;

  code = createDataBlock(&pBlock);
  QUERY_CHECK_CODE(code, lino, _return);

  pBlock->info.id.blockId = pNode->dataBlockId;
  pBlock->info.calWin = (STimeWindow){.skey = INT64_MIN, .ekey = INT64_MAX};
  pBlock->info.watermark = INT64_MIN;

  int32_t i = 0;
  SNode*  node = NULL;
  FOREACH(node, pNode->pSlots) {
    SSlotDescNode* pDescNode = (SSlotDescNode*)node;
    SColumnInfoData idata =
        createColumnInfoData(pDescNode->dataType.type, pDescNode->dataType.bytes, pDescNode->slotId);
    idata.info.scale = pDescNode->dataType.scale;
    idata.info.precision = pDescNode->dataType.precision;
    idata.info.noData = pDescNode->reserve;

    code = blockDataAppendColInfo(pBlock, &idata);
    QUERY_CHECK_CODE(code, lino, _return);
    ++i;
  }

  if (pBlock != NULL && i != numOfCols) {
    code = TSDB_CODE_INVALID_PARA;
    QUERY_CHECK_CODE(code, lino, _return);
  }

  return pBlock;
_return:
  qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  blockDataDestroy(pBlock);
  terrno = code;
  return NULL;
}

int32_t prepareDataBlockBuf(SSDataBlock* pDataBlock, SColMatchInfo* pMatchInfo) {
  SDataBlockInfo* pBlockInfo = &pDataBlock->info;

  for (int32_t i = 0; i < taosArrayGetSize(pMatchInfo->pList); ++i) {
    SColMatchItem* pItem = taosArrayGet(pMatchInfo->pList, i);
    if (!pItem) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
      return terrno;
    }

    if (pItem->isPk) {
      SColumnInfoData* pInfoData = taosArrayGet(pDataBlock->pDataBlock, pItem->dstSlotId);
      if (!pInfoData) {
        qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
        return terrno;
      }
      pBlockInfo->pks[0].type = pInfoData->info.type;
      pBlockInfo->pks[1].type = pInfoData->info.type;

      // allocate enough buffer size, which is pInfoData->info.bytes
      if (IS_VAR_DATA_TYPE(pItem->dataType.type)) {
        pBlockInfo->pks[0].pData = taosMemoryCalloc(1, pInfoData->info.bytes);
        if (pBlockInfo->pks[0].pData == NULL) {
          return terrno;
        }

        pBlockInfo->pks[1].pData = taosMemoryCalloc(1, pInfoData->info.bytes);
        if (pBlockInfo->pks[1].pData == NULL) {
          taosMemoryFreeClear(pBlockInfo->pks[0].pData);
          return terrno;
        }

        pBlockInfo->pks[0].nData = pInfoData->info.bytes;
        pBlockInfo->pks[1].nData = pInfoData->info.bytes;
      }

      break;
    }
  }

  return TSDB_CODE_SUCCESS;
}

EDealRes doTranslateTagExpr(SNode** pNode, void* pContext) {
  STransTagExprCtx* pCtx = pContext;
  SMetaReader*      mr = pCtx->pReader;
  bool              isTagCol = false, isTbname = false;
  if (nodeType(*pNode) == QUERY_NODE_COLUMN) {
    SColumnNode* pCol = (SColumnNode*)*pNode;
    if (pCol->colType == COLUMN_TYPE_TBNAME)
      isTbname = true;
    else
      isTagCol = true;
  } else if (nodeType(*pNode) == QUERY_NODE_FUNCTION) {
    SFunctionNode* pFunc = (SFunctionNode*)*pNode;
    if (pFunc->funcType == FUNCTION_TYPE_TBNAME) isTbname = true;
  }
  if (isTagCol) {
    SColumnNode* pSColumnNode = *(SColumnNode**)pNode;

    SValueNode* res = NULL;
    pCtx->code = nodesMakeNode(QUERY_NODE_VALUE, (SNode**)&res);
    if (NULL == res) {
      return DEAL_RES_ERROR;
    }

    res->translate = true;
    res->node.resType = pSColumnNode->node.resType;

    STagVal tagVal = {0};
    tagVal.cid = pSColumnNode->colId;
    const char* p = mr->pAPI->extractTagVal(mr->me.ctbEntry.pTags, pSColumnNode->node.resType.type, &tagVal);
    if (p == NULL) {
      res->node.resType.type = TSDB_DATA_TYPE_NULL;
    } else if (pSColumnNode->node.resType.type == TSDB_DATA_TYPE_JSON) {
      int32_t len = ((const STag*)p)->len;
      res->datum.p = taosMemoryCalloc(len + 1, 1);
      if (NULL == res->datum.p) {
        return DEAL_RES_ERROR;
      }
      memcpy(res->datum.p, p, len);
    } else if (IS_VAR_DATA_TYPE(pSColumnNode->node.resType.type)) {
      if (IS_STR_DATA_BLOB(pSColumnNode->node.resType.type)) {
        return TSDB_CODE_BLOB_NOT_SUPPORT_TAG;
      }

      res->datum.p = taosMemoryCalloc(tagVal.nData + VARSTR_HEADER_SIZE + 1, 1);
      if (NULL == res->datum.p) {
        return DEAL_RES_ERROR;
      }

      if (IS_STR_DATA_BLOB(pSColumnNode->node.resType.type)) {
        memcpy(blobDataVal(res->datum.p), tagVal.pData, tagVal.nData);
        blobDataSetLen(res->datum.p, tagVal.nData);
      } else {
        memcpy(varDataVal(res->datum.p), tagVal.pData, tagVal.nData);
        varDataSetLen(res->datum.p, tagVal.nData);
      }
    } else {
      int32_t code = nodesSetValueNodeValue(res, &(tagVal.i64));
      if (code != TSDB_CODE_SUCCESS) {
        return DEAL_RES_ERROR;
      }
    }
    nodesDestroyNode(*pNode);
    *pNode = (SNode*)res;
  } else if (isTbname) {
    SValueNode* res = NULL;
    pCtx->code = nodesMakeNode(QUERY_NODE_VALUE, (SNode**)&res);
    if (NULL == res) {
      return DEAL_RES_ERROR;
    }

    res->translate = true;
    res->node.resType = ((SExprNode*)(*pNode))->resType;

    int32_t len = strlen(mr->me.name);
    res->datum.p = taosMemoryCalloc(len + VARSTR_HEADER_SIZE + 1, 1);
    if (NULL == res->datum.p) {
      return DEAL_RES_ERROR;
    }
    memcpy(varDataVal(res->datum.p), mr->me.name, len);
    varDataSetLen(res->datum.p, len);
    nodesDestroyNode(*pNode);
    *pNode = (SNode*)res;
  }

  return DEAL_RES_CONTINUE;
}

int32_t isQualifiedTable(int64_t uid, SNode* pTagCond, void* vnode, bool* pQualified, SStorageAPI* pAPI) {
  int32_t     code = TSDB_CODE_SUCCESS;
  SMetaReader mr = {0};

  pAPI->metaReaderFn.initReader(&mr, vnode, META_READER_LOCK, &pAPI->metaFn);
  code = pAPI->metaReaderFn.getEntryGetUidCache(&mr, uid);
  if (TSDB_CODE_SUCCESS != code) {
    pAPI->metaReaderFn.clearReader(&mr);
    *pQualified = false;

    return TSDB_CODE_SUCCESS;
  }

  SNode* pTagCondTmp = NULL;
  code = nodesCloneNode(pTagCond, &pTagCondTmp);
  if (TSDB_CODE_SUCCESS != code) {
    *pQualified = false;
    pAPI->metaReaderFn.clearReader(&mr);
    return code;
  }
  STransTagExprCtx ctx = {.code = 0, .pReader = &mr};
  nodesRewriteExprPostOrder(&pTagCondTmp, doTranslateTagExpr, &ctx);
  pAPI->metaReaderFn.clearReader(&mr);
  if (TSDB_CODE_SUCCESS != ctx.code) {
    *pQualified = false;
    nodesDestroyNode(pTagCondTmp);
    terrno = code;
    return code;
  }

  SNode* pNew = NULL;
  code = scalarCalculateConstants(pTagCondTmp, &pNew);
  if (TSDB_CODE_SUCCESS != code) {
    terrno = code;
    nodesDestroyNode(pTagCondTmp);
    *pQualified = false;

    return code;
  }

  SValueNode* pValue = (SValueNode*)pNew;
  *pQualified = pValue->datum.b;

  nodesDestroyNode(pNew);
  return TSDB_CODE_SUCCESS;
}

static EDealRes getColumn(SNode** pNode, void* pContext) {
  tagFilterAssist* pData = (tagFilterAssist*)pContext;
  SColumnNode*     pSColumnNode = NULL;
  if (QUERY_NODE_COLUMN == nodeType((*pNode))) {
    pSColumnNode = *(SColumnNode**)pNode;
  } else if (QUERY_NODE_FUNCTION == nodeType((*pNode))) {
    SFunctionNode* pFuncNode = *(SFunctionNode**)(pNode);
    if (pFuncNode->funcType == FUNCTION_TYPE_TBNAME) {
      pData->code = nodesMakeNode(QUERY_NODE_COLUMN, (SNode**)&pSColumnNode);
      if (NULL == pSColumnNode) {
        return DEAL_RES_ERROR;
      }
      pSColumnNode->colId = -1;
      pSColumnNode->colType = COLUMN_TYPE_TBNAME;
      pSColumnNode->node.resType.type = TSDB_DATA_TYPE_VARCHAR;
      pSColumnNode->node.resType.bytes = TSDB_TABLE_FNAME_LEN - 1 + VARSTR_HEADER_SIZE;
      nodesDestroyNode(*pNode);
      *pNode = (SNode*)pSColumnNode;
    } else {
      return DEAL_RES_CONTINUE;
    }
  } else {
    return DEAL_RES_CONTINUE;
  }

  void* data = taosHashGet(pData->colHash, &pSColumnNode->colId, sizeof(pSColumnNode->colId));
  if (!data) {
    int32_t tempRes =
        taosHashPut(pData->colHash, &pSColumnNode->colId, sizeof(pSColumnNode->colId), pNode, sizeof((*pNode)));
    if (tempRes != TSDB_CODE_SUCCESS && tempRes != TSDB_CODE_DUP_KEY) {
      return DEAL_RES_ERROR;
    }
    pSColumnNode->slotId = pData->index++;
    SColumnInfo cInfo = {.colId = pSColumnNode->colId,
                         .type = pSColumnNode->node.resType.type,
                         .bytes = pSColumnNode->node.resType.bytes,
                         .pk = pSColumnNode->isPk};
#if TAG_FILTER_DEBUG
    qDebug("tagfilter build column info, slotId:%d, colId:%d, type:%d", pSColumnNode->slotId, cInfo.colId, cInfo.type);
#endif
    void* tmp = taosArrayPush(pData->cInfoList, &cInfo);
    if (!tmp) {
      return DEAL_RES_ERROR;
    }
  } else {
    SColumnNode* col = *(SColumnNode**)data;
    pSColumnNode->slotId = col->slotId;
  }

  return DEAL_RES_CONTINUE;
}

static int32_t createResultData(SDataType* pType, int32_t numOfRows, SScalarParam* pParam) {
  SColumnInfoData* pColumnData = taosMemoryCalloc(1, sizeof(SColumnInfoData));
  if (pColumnData == NULL) {
    return terrno;
  }

  pColumnData->info.type = pType->type;
  pColumnData->info.bytes = pType->bytes;
  pColumnData->info.scale = pType->scale;
  pColumnData->info.precision = pType->precision;

  int32_t code = colInfoDataEnsureCapacity(pColumnData, numOfRows, true);
  if (code != TSDB_CODE_SUCCESS) {
    terrno = code;
    releaseColInfoData(pColumnData);
    return terrno;
  }

  pParam->columnData = pColumnData;
  pParam->colAlloced = true;
  return TSDB_CODE_SUCCESS;
}

static void releaseColInfoData(void* pCol) {
  if (pCol) {
    SColumnInfoData* col = (SColumnInfoData*)pCol;
    colDataDestroy(col);
    taosMemoryFree(col);
  }
}

void freeItem(void* p) {
  STUidTagInfo* pInfo = p;
  if (pInfo->pTagVal != NULL) {
    taosMemoryFree(pInfo->pTagVal);
  }
}

typedef struct {
  col_id_t  colId;
  SNode*    pValueNode;
  int32_t   bytes;  // length defined in schema
} STagDataEntry;

static int compareTagDataEntry(const void* a, const void* b) {
  STagDataEntry* p1 = (STagDataEntry*)a;
  STagDataEntry* p2 = (STagDataEntry*)b;
  return compareInt16Val(&p1->colId, &p2->colId);
}

static int32_t buildTagDataEntryKey(SArray* pIdWithValue, char** keyBuf, int32_t keyLen) {
  *keyBuf = (char*)taosMemoryCalloc(1, keyLen);
  if (NULL == *keyBuf) {
    qError(
      "failed to allocate memory for tag filter optimization key, size:%d",
      keyLen);
    return terrno;
  }
  char* pStart = *keyBuf;
  for (int32_t i = 0; i < taosArrayGetSize(pIdWithValue); ++i) {
    STagDataEntry* entry      = (STagDataEntry*)taosArrayGet(pIdWithValue, i);
    SValueNode*    pValueNode = (SValueNode*)entry->pValueNode;
    // num type may have different bytes length, use the smaller one
    int32_t        bytes = TMIN(entry->bytes, pValueNode->node.resType.bytes);

    (void)memcpy(pStart, &entry->colId, sizeof(col_id_t));
    pStart += sizeof(col_id_t);

    if (!pValueNode->isNull) {
      switch (pValueNode->node.resType.type) {
        case TSDB_DATA_TYPE_BOOL:
          (void)memcpy(
            pStart, &pValueNode->datum.b, bytes);
          pStart += bytes;
          break;
        case TSDB_DATA_TYPE_TINYINT:
        case TSDB_DATA_TYPE_SMALLINT:
        case TSDB_DATA_TYPE_INT:
        case TSDB_DATA_TYPE_BIGINT:
        case TSDB_DATA_TYPE_TIMESTAMP:
          (void)memcpy(
            pStart, &pValueNode->datum.i, bytes);
          pStart += bytes;
          break;
        case TSDB_DATA_TYPE_UTINYINT:
        case TSDB_DATA_TYPE_USMALLINT:
        case TSDB_DATA_TYPE_UINT:
        case TSDB_DATA_TYPE_UBIGINT:
          (void)memcpy(
            pStart, &pValueNode->datum.u, bytes);
          pStart += bytes;
          break;
        case TSDB_DATA_TYPE_FLOAT:
        case TSDB_DATA_TYPE_DOUBLE:
          (void)memcpy(
            pStart, &pValueNode->datum.d, bytes);
          pStart += bytes;
          break;
        case TSDB_DATA_TYPE_VARCHAR:
        case TSDB_DATA_TYPE_VARBINARY:
        case TSDB_DATA_TYPE_NCHAR:
          (void)memcpy(pStart,
            varDataVal(pValueNode->datum.p), varDataLen(pValueNode->datum.p));
          pStart += varDataLen(pValueNode->datum.p);
          break;
        default:
          qError("unsupported tag data type %d in tag filter optimization",
            pValueNode->node.resType.type);
          return TSDB_CODE_STREAM_INTERNAL_ERROR;
      }
    }
  }

  return TSDB_CODE_SUCCESS;
}

static void extractTagDataEntry(
  SOperatorNode* pOpNode, SArray* pIdWithValue) {
  SNode* pLeft = pOpNode->pLeft;
  SNode* pRight = pOpNode->pRight;
  SColumnNode* pColNode = nodeType(pLeft) == QUERY_NODE_COLUMN ?
    (SColumnNode*)pLeft : (SColumnNode*)pRight;
  SValueNode* pValueNode = nodeType(pLeft) == QUERY_NODE_VALUE ?
    (SValueNode*)pLeft : (SValueNode*)pRight;

  STagDataEntry entry = {0};
  entry.colId = pColNode->colId;
  entry.pValueNode = (SNode*)pValueNode;
  entry.bytes = pColNode->node.resType.bytes;
  void* _tmp = taosArrayPush(pIdWithValue, &entry);
}

static int32_t extractTagFilterTagDataEntries(
  const SNode* pTagCond, SArray* pIdWithVal) {
  if (NULL == pTagCond || NULL == pIdWithVal ||
    (nodeType(pTagCond) != QUERY_NODE_OPERATOR &&
      nodeType(pTagCond) != QUERY_NODE_LOGIC_CONDITION)) {
    qError("invalid parameter to extract tag filter symbol");
    return TSDB_CODE_STREAM_INTERNAL_ERROR;
  }

  if (nodeType(pTagCond) == QUERY_NODE_OPERATOR) {
    extractTagDataEntry((SOperatorNode*)pTagCond, pIdWithVal);
  } else if (nodeType(pTagCond) == QUERY_NODE_LOGIC_CONDITION) {
    SNode* pChild = NULL;
    FOREACH(pChild, ((SLogicConditionNode*)pTagCond)->pParameterList) {
      extractTagDataEntry((SOperatorNode*)pChild, pIdWithVal);
    }
  }

  taosArraySort(pIdWithVal, compareTagDataEntry);

  return TSDB_CODE_SUCCESS;
}

static int32_t genStableTagFilterDigest(const SNode* pTagCond, T_MD5_CTX* pContext) {
  if (pTagCond == NULL) {
    return TSDB_CODE_SUCCESS;
  }

  char*   payload = NULL;
  int32_t len = 0;
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;

  SArray* pIdWithVal = taosArrayInit(TARRAY_MIN_SIZE, sizeof(STagDataEntry));
  code = extractTagFilterTagDataEntries(pTagCond, pIdWithVal);
  QUERY_CHECK_CODE(code, lino, _end);
  for (int32_t i = 0; i < taosArrayGetSize(pIdWithVal); ++i) {
    STagDataEntry* pEntry = taosArrayGet(pIdWithVal, i);
    len += sizeof(col_id_t) + pEntry->bytes;
  }
  code = buildTagDataEntryKey(pIdWithVal, &payload, len);
  QUERY_CHECK_CODE(code, lino, _end);

  tMD5Init(pContext);
  tMD5Update(pContext, (uint8_t*)payload, (uint32_t)len);
  tMD5Final(pContext);

_end:
  if (TSDB_CODE_SUCCESS != code) {
    qError("%s failed at line %d since %s",
      __func__, __LINE__, tstrerror(code));
  }
  taosArrayDestroy(pIdWithVal);
  taosMemoryFree(payload);
  return code;
}

static int32_t genTagFilterDigest(const SNode* pTagCond, T_MD5_CTX* pContext) {
  if (pTagCond == NULL) {
    return TSDB_CODE_SUCCESS;
  }

  char*   payload = NULL;
  int32_t len = 0;
  int32_t code = nodesNodeToMsg(pTagCond, &payload, &len);
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
    return code;
  }

  tMD5Init(pContext);
  tMD5Update(pContext, (uint8_t*)payload, (uint32_t)len);
  tMD5Final(pContext);

  // void* tmp = NULL;
  // uint32_t size = 0;
  // (void)taosAscii2Hex((const char*)pContext->digest, 16, &tmp, &size);
  // qInfo("tag filter digest payload: %s", tmp);
  // taosMemoryFree(tmp);

  taosMemoryFree(payload);
  return TSDB_CODE_SUCCESS;
}

static int32_t genTbGroupDigest(const SNode* pGroup, uint8_t* filterDigest, T_MD5_CTX* pContext) {
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;
  char*   payload = NULL;
  int32_t len = 0;
  code = nodesNodeToMsg(pGroup, &payload, &len);
  QUERY_CHECK_CODE(code, lino, _end);

  if (filterDigest[0]) {
    payload = taosMemoryRealloc(payload, len + tListLen(pContext->digest));
    QUERY_CHECK_NULL(payload, code, lino, _end, terrno);
    memcpy(payload + len, filterDigest + 1, tListLen(pContext->digest));
    len += tListLen(pContext->digest);
  }

  tMD5Init(pContext);
  tMD5Update(pContext, (uint8_t*)payload, (uint32_t)len);
  tMD5Final(pContext);

_end:
  taosMemoryFree(payload);
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  return code;
}

int32_t qGetColumnsFromNodeList(void* data, bool isList, SArray** pColList) {
  int32_t code = TSDB_CODE_SUCCESS;
  tagFilterAssist ctx = {0};
  ctx.colHash = taosHashInit(4, taosGetDefaultHashFunction(TSDB_DATA_TYPE_SMALLINT), false, HASH_NO_LOCK);
  if (ctx.colHash == NULL) {
    code = terrno;
    goto end;
  }

  ctx.index = 0;
  ctx.cInfoList = taosArrayInit(4, sizeof(SColumnInfo));
  if (ctx.cInfoList == NULL) {
    code = terrno;
    goto end;
  }

  if (isList) {
    SNode* pNode = NULL;
    FOREACH(pNode, (SNodeList*)data) {
      nodesRewriteExprPostOrder(&pNode, getColumn, (void*)&ctx);
      if (TSDB_CODE_SUCCESS != ctx.code) {
        code = ctx.code;
        goto end;
      }
      REPLACE_NODE(pNode);
    }
  } else {
    SNode* pNode = (SNode*)data;
    nodesRewriteExprPostOrder(&pNode, getColumn, (void*)&ctx);
    if (TSDB_CODE_SUCCESS != ctx.code) {
      code = ctx.code;
      goto end;
    }
  }
  
  if (pColList != NULL) *pColList = ctx.cInfoList;
  ctx.cInfoList = NULL;

end:
  taosHashCleanup(ctx.colHash);
  taosArrayDestroy(ctx.cInfoList);
  return code;
}

static int32_t buildGroupInfo(SColumnInfoData* pValue, int32_t i, SArray* gInfo) {
  int32_t code = TSDB_CODE_SUCCESS;
  SStreamGroupValue* v = taosArrayReserve(gInfo, 1);
  if (v == NULL) {
    code = terrno;
    goto end;
  }
  if (colDataIsNull_s(pValue, i)) {
    v->isNull = true;
  } else {
    v->isNull = false;
    char* data = colDataGetData(pValue, i);
    if (pValue->info.type == TSDB_DATA_TYPE_JSON) {
      if (tTagIsJson(data)) {
        code = TSDB_CODE_QRY_JSON_IN_GROUP_ERROR;
        goto end;
      }
      if (tTagIsJsonNull(data)) {
        v->isNull = true;
        goto end;
      }
      int32_t len = getJsonValueLen(data);
      v->data.type = pValue->info.type;
      v->data.nData = len;
      v->data.pData = taosMemoryCalloc(1, len + 1);
      if (v->data.pData == NULL) {
        code = terrno;
        goto end;
      }
      memcpy(v->data.pData, data, len);
      qDebug("buildGroupInfo:%d add json data len:%d, data:%s", i, len, (char*)v->data.pData);
    } else if (IS_VAR_DATA_TYPE(pValue->info.type)) {
      if (varDataTLen(data) > pValue->info.bytes) {
        code = TSDB_CODE_TDB_INVALID_TABLE_SCHEMA_VER;
        goto end;
      }
      v->data.type = pValue->info.type;
      v->data.nData = varDataLen(data);
      v->data.pData = taosMemoryCalloc(1, varDataLen(data) + 1);
      if (v->data.pData == NULL) {
        code = terrno;
        goto end;
      }
      memcpy(v->data.pData, varDataVal(data), varDataLen(data));
      qDebug("buildGroupInfo:%d add var data type:%d, len:%d, data:%s", i, pValue->info.type, varDataLen(data), (char*)v->data.pData);
    } else if (pValue->info.type == TSDB_DATA_TYPE_DECIMAL) {  // reader todo decimal
      v->data.type = pValue->info.type;
      v->data.nData = pValue->info.bytes;
      v->data.pData = taosMemoryCalloc(1, pValue->info.bytes);
      if (v->data.pData == NULL) {
        code = terrno;
        goto end;
      }
      memcpy(&v->data.pData, data, pValue->info.bytes);
      qDebug("buildGroupInfo:%d add data type:%d, data:%"PRId64, i, pValue->info.type, v->data.val);
    } else {  // reader todo decimal
      v->data.type = pValue->info.type;
      memcpy(&v->data.val, data, pValue->info.bytes);
      qDebug("buildGroupInfo:%d add data type:%d, data:%"PRId64, i, pValue->info.type, v->data.val);
    }
  }
end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
    v->isNull = true;
  }
  return code;
}

static void getColInfoResultForGroupbyForStream(void* pVnode, SNodeList* group, STableListInfo* pTableListInfo,
                                   SStorageAPI* pAPI, SHashObj* groupIdMap) {
  int32_t      code = TSDB_CODE_SUCCESS;
  int32_t      lino = 0;
  SArray*      pBlockList = NULL;
  SSDataBlock* pResBlock = NULL;
  SArray*      groupData = NULL;
  SArray*      pUidTagList = NULL;
  SArray*      gInfo = NULL;
  int32_t      tbNameIndex = 0;

  int32_t rows = taosArrayGetSize(pTableListInfo->pTableList);
  if (rows == 0) {
    return;
  }

  pUidTagList = taosArrayInit(8, sizeof(STUidTagInfo));
  QUERY_CHECK_NULL(pUidTagList, code, lino, end, terrno);

  for (int32_t i = 0; i < rows; ++i) {
    STableKeyInfo* pkeyInfo = taosArrayGet(pTableListInfo->pTableList, i);
    QUERY_CHECK_NULL(pkeyInfo, code, lino, end, terrno);
    STUidTagInfo info = {.uid = pkeyInfo->uid};
    void*        tmp = taosArrayPush(pUidTagList, &info);
    QUERY_CHECK_NULL(tmp, code, lino, end, terrno);
  }
 
  if (taosArrayGetSize(pUidTagList) > 0) {
    code = pAPI->metaFn.getTableTagsByUid(pVnode, pTableListInfo->idInfo.suid, pUidTagList);
  } else {
    code = pAPI->metaFn.getTableTags(pVnode, pTableListInfo->idInfo.suid, pUidTagList);
  }
  if (code != TSDB_CODE_SUCCESS) {
    goto end;
  }

  SArray* pColList = NULL;
  code = qGetColumnsFromNodeList(group, true, &pColList);
  if (code != TSDB_CODE_SUCCESS) {
    goto end;
  }

  for (int32_t i = 0; i < taosArrayGetSize(pColList); ++i) {
    SColumnInfo* tmp = (SColumnInfo*)taosArrayGet(pColList, i);
    if (tmp != NULL && tmp->colId == -1) {
      tbNameIndex = i;
    }
  }
  
  int32_t numOfTables = taosArrayGetSize(pUidTagList);
  pResBlock = createTagValBlockForFilter(pColList, numOfTables, pUidTagList, pVnode, pAPI);
  taosArrayDestroy(pColList);
  if (pResBlock == NULL) {
    code = terrno;
    goto end;
  }

  pBlockList = taosArrayInit(2, POINTER_BYTES);
  QUERY_CHECK_NULL(pBlockList, code, lino, end, terrno);

  void* tmp = taosArrayPush(pBlockList, &pResBlock);
  QUERY_CHECK_NULL(tmp, code, lino, end, terrno);

  groupData = taosArrayInit(2, POINTER_BYTES);
  QUERY_CHECK_NULL(groupData, code, lino, end, terrno);

  SNode* pNode = NULL;
  FOREACH(pNode, group) {
    SScalarParam output = {0};

    switch (nodeType(pNode)) {
      case QUERY_NODE_VALUE:
        break;
      case QUERY_NODE_COLUMN:
      case QUERY_NODE_OPERATOR:
      case QUERY_NODE_FUNCTION: {
        SExprNode* expNode = (SExprNode*)pNode;
        code = createResultData(&expNode->resType, rows, &output);
        if (code != TSDB_CODE_SUCCESS) {
          goto end;
        }
        break;
      }

      default:
        code = TSDB_CODE_OPS_NOT_SUPPORT;
        goto end;
    }

    if (nodeType(pNode) == QUERY_NODE_COLUMN) {
      SColumnNode*     pSColumnNode = (SColumnNode*)pNode;
      SColumnInfoData* pColInfo = (SColumnInfoData*)taosArrayGet(pResBlock->pDataBlock, pSColumnNode->slotId);
      QUERY_CHECK_NULL(pColInfo, code, lino, end, terrno);
      code = colDataAssign(output.columnData, pColInfo, rows, NULL);
    } else if (nodeType(pNode) == QUERY_NODE_VALUE) {
      continue;
    } else {
      gTaskScalarExtra.pStreamInfo = NULL;
      gTaskScalarExtra.pStreamRange = NULL;
      code = scalarCalculate(pNode, pBlockList, &output, &gTaskScalarExtra);
    }

    if (code != TSDB_CODE_SUCCESS) {
      releaseColInfoData(output.columnData);
      goto end;
    }

    void* tmp = taosArrayPush(groupData, &output.columnData);
    QUERY_CHECK_NULL(tmp, code, lino, end, terrno);
  }

  for (int i = 0; i < rows; i++) {
    gInfo = taosArrayInit(taosArrayGetSize(groupData), sizeof(SStreamGroupValue));
    QUERY_CHECK_NULL(gInfo, code, lino, end, terrno);

    STableKeyInfo* info = taosArrayGet(pTableListInfo->pTableList, i);
    QUERY_CHECK_NULL(info, code, lino, end, terrno);

    for (int j = 0; j < taosArrayGetSize(groupData); j++) {
      SColumnInfoData* pValue = (SColumnInfoData*)taosArrayGetP(groupData, j);
        int32_t ret = buildGroupInfo(pValue, i, gInfo);
        if (ret != TSDB_CODE_SUCCESS) {
          qError("buildGroupInfo failed at line %d since %s", __LINE__, tstrerror(ret));
          goto end;
        }
        if (j == tbNameIndex) {
          SStreamGroupValue* v = taosArrayGetLast(gInfo);
          if (v != NULL){
            v->isTbname = true;
            v->uid = info->uid;
          }
        }
    }

    int32_t ret = taosHashPut(groupIdMap, &info->uid, sizeof(info->uid), &gInfo, POINTER_BYTES);
    if (ret != TSDB_CODE_SUCCESS) {
      qError("put groupid to map failed at line %d since %s", __LINE__, tstrerror(ret));
      goto end;
    }
    qDebug("put groupid to map gid:%" PRIu64, info->uid);
    gInfo = NULL;
  }

end:
  blockDataDestroy(pResBlock);
  taosArrayDestroy(pBlockList);
  taosArrayDestroyEx(pUidTagList, freeItem);
  taosArrayDestroyP(groupData, releaseColInfoData);
  taosArrayDestroyEx(gInfo, tDestroySStreamGroupValue);

  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
}

int32_t getColInfoResultForGroupby(void* pVnode, SNodeList* group, STableListInfo* pTableListInfo, uint8_t* digest,
                                   SStorageAPI* pAPI, bool initRemainGroups, SHashObj* groupIdMap) {
  int32_t      code = TSDB_CODE_SUCCESS;
  int32_t      lino = 0;
  SArray*      pBlockList = NULL;
  SSDataBlock* pResBlock = NULL;
  void*        keyBuf = NULL;
  SArray*      groupData = NULL;
  SArray*      pUidTagList = NULL;
  SArray*      tableList = NULL;
  SArray*      gInfo = NULL;

  int32_t rows = taosArrayGetSize(pTableListInfo->pTableList);
  if (rows == 0) {
    return TSDB_CODE_SUCCESS;
  } 

  T_MD5_CTX context = {0};
  if (tsTagFilterCache && groupIdMap == NULL) {
    SNodeListNode* listNode = NULL;
    code = nodesMakeNode(QUERY_NODE_NODE_LIST, (SNode**)&listNode);
    if (TSDB_CODE_SUCCESS != code) {
      goto end;
    }
    listNode->pNodeList = group;
    code = genTbGroupDigest((SNode*)listNode, digest, &context);
    QUERY_CHECK_CODE(code, lino, end);

    nodesFree(listNode);

    code = pAPI->metaFn.metaGetCachedTbGroup(pVnode, pTableListInfo->idInfo.suid, context.digest,
                                             tListLen(context.digest), &tableList);
    QUERY_CHECK_CODE(code, lino, end);

    if (tableList) {
      taosArrayDestroy(pTableListInfo->pTableList);
      pTableListInfo->pTableList = tableList;
      qDebug("retrieve tb group list from cache, numOfTables:%d",
             (int32_t)taosArrayGetSize(pTableListInfo->pTableList));
      goto end;
    }
  }

  pUidTagList = taosArrayInit(8, sizeof(STUidTagInfo));
  QUERY_CHECK_NULL(pUidTagList, code, lino, end, terrno);

  for (int32_t i = 0; i < rows; ++i) {
    STableKeyInfo* pkeyInfo = taosArrayGet(pTableListInfo->pTableList, i);
    QUERY_CHECK_NULL(pkeyInfo, code, lino, end, terrno);
    STUidTagInfo info = {.uid = pkeyInfo->uid};
    void*        tmp = taosArrayPush(pUidTagList, &info);
    QUERY_CHECK_NULL(tmp, code, lino, end, terrno);
  }

  if (taosArrayGetSize(pUidTagList) > 0) {
    code = pAPI->metaFn.getTableTagsByUid(pVnode, pTableListInfo->idInfo.suid, pUidTagList);
  } else {
    code = pAPI->metaFn.getTableTags(pVnode, pTableListInfo->idInfo.suid, pUidTagList);
  }
  if (code != TSDB_CODE_SUCCESS) {
    goto end;
  }

  SArray* pColList = NULL;
  code = qGetColumnsFromNodeList(group, true, &pColList); 
  if (code != TSDB_CODE_SUCCESS) {
    goto end;
  }

  int32_t numOfTables = taosArrayGetSize(pUidTagList);
  pResBlock = createTagValBlockForFilter(pColList, numOfTables, pUidTagList, pVnode, pAPI);
  taosArrayDestroy(pColList);
  if (pResBlock == NULL) {
    code = terrno;
    goto end;
  }

  //  int64_t st1 = taosGetTimestampUs();
  //  qDebug("generate tag block rows:%d, cost:%ld us", rows, st1-st);

  pBlockList = taosArrayInit(2, POINTER_BYTES);
  QUERY_CHECK_NULL(pBlockList, code, lino, end, terrno);

  void* tmp = taosArrayPush(pBlockList, &pResBlock);
  QUERY_CHECK_NULL(tmp, code, lino, end, terrno);

  groupData = taosArrayInit(2, POINTER_BYTES);
  QUERY_CHECK_NULL(groupData, code, lino, end, terrno);

  SNode* pNode = NULL;
  FOREACH(pNode, group) {
    SScalarParam output = {0};

    switch (nodeType(pNode)) {
      case QUERY_NODE_VALUE:
        break;
      case QUERY_NODE_COLUMN:
      case QUERY_NODE_OPERATOR:
      case QUERY_NODE_FUNCTION: {
        SExprNode* expNode = (SExprNode*)pNode;
        code = createResultData(&expNode->resType, rows, &output);
        if (code != TSDB_CODE_SUCCESS) {
          goto end;
        }
        break;
      }
      case QUERY_NODE_REMOTE_VALUE: {
        SRemoteValueNode* pRemote = (SRemoteValueNode*)pNode;
        code = qFetchRemoteNode(gTaskScalarExtra.pSubJobCtx, pRemote->subQIdx, pNode);
        QUERY_CHECK_CODE(code, lino, end);
        break;
      }
      
      default:
        code = TSDB_CODE_OPS_NOT_SUPPORT;
        goto end;
    }

    if (nodeType(pNode) == QUERY_NODE_COLUMN) {
      SColumnNode*     pSColumnNode = (SColumnNode*)pNode;
      SColumnInfoData* pColInfo = (SColumnInfoData*)taosArrayGet(pResBlock->pDataBlock, pSColumnNode->slotId);
      QUERY_CHECK_NULL(pColInfo, code, lino, end, terrno);
      code = colDataAssign(output.columnData, pColInfo, rows, NULL);
    } else if (nodeType(pNode) == QUERY_NODE_VALUE) {
      continue;
    } else {
      gTaskScalarExtra.pStreamInfo = NULL;
      gTaskScalarExtra.pStreamRange = NULL;
      code = scalarCalculate(pNode, pBlockList, &output, &gTaskScalarExtra);
    }

    if (code != TSDB_CODE_SUCCESS) {
      releaseColInfoData(output.columnData);
      goto end;
    }

    void* tmp = taosArrayPush(groupData, &output.columnData);
    QUERY_CHECK_NULL(tmp, code, lino, end, terrno);
  }

  int32_t keyLen = 0;
  SNode*  node;
  FOREACH(node, group) {
    SExprNode* pExpr = (SExprNode*)node;
    keyLen += pExpr->resType.bytes;
  }

  int32_t nullFlagSize = sizeof(int8_t) * LIST_LENGTH(group);
  keyLen += nullFlagSize;

  keyBuf = taosMemoryCalloc(1, keyLen);
  if (keyBuf == NULL) {
    code = terrno;
    goto end;
  }

  if (initRemainGroups) {
    pTableListInfo->remainGroups =
        taosHashInit(rows, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), false, HASH_NO_LOCK);
    if (pTableListInfo->remainGroups == NULL) {
      code = terrno;
      goto end;
    }
  }

  for (int i = 0; i < rows; i++) {
    STableKeyInfo* info = taosArrayGet(pTableListInfo->pTableList, i);
    QUERY_CHECK_NULL(info, code, lino, end, terrno);

    if (groupIdMap != NULL){
      gInfo = taosArrayInit(taosArrayGetSize(groupData), sizeof(SStreamGroupValue));
    }
    
    char* isNull = (char*)keyBuf;
    char* pStart = (char*)keyBuf + sizeof(int8_t) * LIST_LENGTH(group);
    for (int j = 0; j < taosArrayGetSize(groupData); j++) {
      SColumnInfoData* pValue = (SColumnInfoData*)taosArrayGetP(groupData, j);

      if (groupIdMap != NULL && gInfo != NULL) {
        int32_t ret = buildGroupInfo(pValue, i, gInfo);
        if (ret != TSDB_CODE_SUCCESS) {
          qError("buildGroupInfo failed at line %d since %s", __LINE__, tstrerror(ret));
          taosArrayDestroyEx(gInfo, tDestroySStreamGroupValue);
          gInfo = NULL;
        }
      }
      
      if (colDataIsNull_s(pValue, i)) {
        isNull[j] = 1;
      } else {
        isNull[j] = 0;
        char* data = colDataGetData(pValue, i);
        if (pValue->info.type == TSDB_DATA_TYPE_JSON) {
          // if (tTagIsJson(data)) {
          //   code = TSDB_CODE_QRY_JSON_IN_GROUP_ERROR;
          //   goto end;
          // }
          if (tTagIsJsonNull(data)) {
            isNull[j] = 1;
            continue;
          }
          int32_t len = getJsonValueLen(data);
          memcpy(pStart, data, len);
          pStart += len;
        } else if (IS_VAR_DATA_TYPE(pValue->info.type)) {
          if (IS_STR_DATA_BLOB(pValue->info.type)) {
            if (blobDataTLen(data) > TSDB_MAX_BLOB_LEN) {
              code = TSDB_CODE_TDB_INVALID_TABLE_SCHEMA_VER;
              goto end;
            }
            memcpy(pStart, data, blobDataTLen(data));
            pStart += blobDataTLen(data);
          } else {
            if (varDataTLen(data) > pValue->info.bytes) {
              code = TSDB_CODE_TDB_INVALID_TABLE_SCHEMA_VER;
              goto end;
            }
            memcpy(pStart, data, varDataTLen(data));
            pStart += varDataTLen(data);
          }
        } else {
          memcpy(pStart, data, pValue->info.bytes);
          pStart += pValue->info.bytes;
        }
      }
    }

    int32_t len = (int32_t)(pStart - (char*)keyBuf);
    info->groupId = calcGroupId(keyBuf, len);
    if (groupIdMap != NULL && gInfo != NULL) {
      int32_t ret = taosHashPut(groupIdMap, &info->groupId, sizeof(info->groupId), &gInfo, POINTER_BYTES);
      if (ret != TSDB_CODE_SUCCESS) {
        qError("put groupid to map failed at line %d since %s", __LINE__, tstrerror(ret));
        taosArrayDestroyEx(gInfo, tDestroySStreamGroupValue);
      }
      qDebug("put groupid to map gid:%" PRIu64, info->groupId);
      gInfo = NULL;
    }
    if (initRemainGroups) {
      // groupId ~ table uid
      code = taosHashPut(pTableListInfo->remainGroups, &(info->groupId), sizeof(info->groupId), &(info->uid),
                         sizeof(info->uid));
      if (code == TSDB_CODE_DUP_KEY) {
        code = TSDB_CODE_SUCCESS;
      }
      QUERY_CHECK_CODE(code, lino, end);
    }
  }

  if (tsTagFilterCache && groupIdMap == NULL) {
    tableList = taosArrayDup(pTableListInfo->pTableList, NULL);
    QUERY_CHECK_NULL(tableList, code, lino, end, terrno);

    code = pAPI->metaFn.metaPutTbGroupToCache(pVnode, pTableListInfo->idInfo.suid, context.digest,
                                              tListLen(context.digest), tableList,
                                              taosArrayGetSize(tableList) * sizeof(STableKeyInfo));
    QUERY_CHECK_CODE(code, lino, end);
  }

  //  int64_t st2 = taosGetTimestampUs();
  //  qDebug("calculate tag block rows:%d, cost:%ld us", rows, st2-st1);

end:
  taosMemoryFreeClear(keyBuf);
  blockDataDestroy(pResBlock);
  taosArrayDestroy(pBlockList);
  taosArrayDestroyEx(pUidTagList, freeItem);
  taosArrayDestroyP(groupData, releaseColInfoData);
  taosArrayDestroyEx(gInfo, tDestroySStreamGroupValue);

  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  return code;
}

static int32_t nameComparFn(const void* p1, const void* p2) {
  const char* pName1 = *(const char**)p1;
  const char* pName2 = *(const char**)p2;

  int32_t ret = strcmp(pName1, pName2);
  if (ret == 0) {
    return 0;
  } else {
    return (ret > 0) ? 1 : -1;
  }
}

static SArray* getTableNameList(const SNodeListNode* pList) {
  int32_t    code = TSDB_CODE_SUCCESS;
  int32_t    lino = 0;
  int32_t    len = LIST_LENGTH(pList->pNodeList);
  SListCell* cell = pList->pNodeList->pHead;

  SArray* pTbList = taosArrayInit(len, POINTER_BYTES);
  QUERY_CHECK_NULL(pTbList, code, lino, _end, terrno);

  for (int i = 0; i < pList->pNodeList->length; i++) {
    SValueNode* valueNode = (SValueNode*)cell->pNode;
    if (!IS_VAR_DATA_TYPE(valueNode->node.resType.type)) {
      terrno = TSDB_CODE_INVALID_PARA;
      taosArrayDestroy(pTbList);
      return NULL;
    }

    char* name = varDataVal(valueNode->datum.p);
    void* tmp = taosArrayPush(pTbList, &name);
    QUERY_CHECK_NULL(tmp, code, lino, _end, terrno);
    cell = cell->pNext;
  }

  size_t numOfTables = taosArrayGetSize(pTbList);

  // order the name
  taosArraySort(pTbList, nameComparFn);

  // remove the duplicates
  SArray* pNewList = taosArrayInit(taosArrayGetSize(pTbList), sizeof(void*));
  QUERY_CHECK_NULL(pNewList, code, lino, _end, terrno);
  void* tmpTbl = taosArrayGet(pTbList, 0);
  QUERY_CHECK_NULL(tmpTbl, code, lino, _end, terrno);
  void* tmp = taosArrayPush(pNewList, tmpTbl);
  QUERY_CHECK_NULL(tmp, code, lino, _end, terrno);

  for (int32_t i = 1; i < numOfTables; ++i) {
    char** name = taosArrayGetLast(pNewList);
    char** nameInOldList = taosArrayGet(pTbList, i);
    QUERY_CHECK_NULL(nameInOldList, code, lino, _end, terrno);
    if (strcmp(*name, *nameInOldList) == 0) {
      continue;
    }

    tmp = taosArrayPush(pNewList, nameInOldList);
    QUERY_CHECK_NULL(tmp, code, lino, _end, terrno);
  }

_end:
  taosArrayDestroy(pTbList);
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
    return NULL;
  }
  return pNewList;
}

static int tableUidCompare(const void* a, const void* b) {
  uint64_t u1 = *(uint64_t*)a;
  uint64_t u2 = *(uint64_t*)b;

  if (u1 == u2) {
    return 0;
  }

  return u1 < u2 ? -1 : 1;
}

static int32_t filterTableInfoCompare(const void* a, const void* b) {
  STUidTagInfo* p1 = (STUidTagInfo*)a;
  STUidTagInfo* p2 = (STUidTagInfo*)b;

  if (p1->uid == p2->uid) {
    return 0;
  }

  return p1->uid < p2->uid ? -1 : 1;
}

static FilterCondType checkTagCond(SNode* cond) {
  if (nodeType(cond) == QUERY_NODE_OPERATOR) {
    return FILTER_NO_LOGIC;
  }
  if (nodeType(cond) == QUERY_NODE_LOGIC_CONDITION && ((SLogicConditionNode*)cond)->condType == LOGIC_COND_TYPE_AND) {
    return FILTER_AND;
  }
  return FILTER_OTHER;
}

static int32_t doInWithAnd(SNode* cond, void* pVnode, SArray* list, SStorageAPI* pAPI, uint64_t suid) {
  if (nodeType(cond) != QUERY_NODE_LOGIC_CONDITION || ((SLogicConditionNode*)cond)->condType != LOGIC_COND_TYPE_AND) {
    return -1;
  }

  SLogicConditionNode* pNode = (SLogicConditionNode*)cond;
  SNodeList*           pList = (SNodeList*)pNode->pParameterList;

  int32_t len = LIST_LENGTH(pList);
  if (len <= 0) {
    return -1;
  }

  SListCell* cell = pList->pHead;
  for (int i = 0; i < len; i++) {
    if (cell == NULL) break;
    if (nodeType(cell->pNode) == QUERY_NODE_OPERATOR && optimizeTbnameInCondImpl(pVnode, list, cell->pNode, pAPI, suid) == 0) {
      return 0;
    }
    cell = cell->pNext;
  }
  return -1;
}

static int32_t optimizeTbnameInCond(void* pVnode, int64_t suid, SArray* list, SNode* cond, SStorageAPI* pAPI) {
  int32_t code = 0;
  int32_t lino = 0;
  if (nodeType(cond) == QUERY_NODE_OPERATOR) {
    code = optimizeTbnameInCondImpl(pVnode, list, cond, pAPI, suid);
  } else {
    code = doInWithAnd(cond, pVnode, list, pAPI, suid);
    QUERY_CHECK_CODE(code, lino, end);
    code = pAPI->metaFn.getTableTagsByUid(pVnode, suid, list);
  }
  
end:
  return code;
}

static int32_t getTableListInInOperator(void* pVnode, SArray* pExistedUidList, SNodeListNode* pList, SStorageAPI* pStoreAPI,
                                        uint64_t suid) {
  int32_t   code = 0;                                          
  SArray*   pTbList = getTableNameList(pList);
  int32_t   numOfTables = taosArrayGetSize(pTbList);
  SHashObj* uHash = NULL;

  size_t numOfExisted = taosArrayGetSize(pExistedUidList);  // len > 0 means there already have uids
  if (numOfExisted > 0) {
    uHash = taosHashInit(numOfExisted / 0.7, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), false, HASH_NO_LOCK);
    if (!uHash) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
      code = terrno;
      goto end;
    }

    for (int i = 0; i < numOfExisted; i++) {
      STUidTagInfo* pTInfo = taosArrayGet(pExistedUidList, i);
      if (!pTInfo) {
        qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
        code = terrno;
        goto end;
      }
      code = taosHashPut(uHash, &pTInfo->uid, sizeof(uint64_t), &i, sizeof(i));
      if (code != TSDB_CODE_SUCCESS && code != TSDB_CODE_DUP_KEY) {
        qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
        goto end;
      }
    }
  }
  taosArrayClear(pExistedUidList);

  for (int i = 0; i < numOfTables; i++) {
    char* name = taosArrayGetP(pTbList, i);
    uint64_t uid = 0, csuid = 0;
    if (pStoreAPI->metaFn.getTableUidByName(pVnode, name, &uid) != 0) {
      continue;
    }

    ETableType tbType = TSDB_TABLE_MAX;
    if (pStoreAPI->metaFn.getTableTypeSuidByName(pVnode, name, &tbType, &csuid) == 0 &&
        (tbType == TSDB_CHILD_TABLE || tbType == TSDB_VIRTUAL_CHILD_TABLE) &&
        csuid == suid) {
      if (NULL == uHash || taosHashGet(uHash, &uid, sizeof(uid)) != NULL) {
        STUidTagInfo s = {.uid = uid, .name = name, .pTagVal = NULL};
        void*        tmp = taosArrayPush(pExistedUidList, &s);
        if (!tmp) {
          code = terrno;
          goto end;
        }
      }
    } 
  }
  taosArraySort(pExistedUidList, filterTableInfoCompare);
  taosArrayRemoveDuplicate(pExistedUidList, filterTableInfoCompare, NULL);
end:
  taosArrayDestroy(pTbList);
  taosHashCleanup(uHash);
  return code;
}

// only return uid that does not contained in pExistedUidList
static int32_t optimizeTbnameInCondImpl(void* pVnode, SArray* pExistedUidList, SNode* pTagCond, SStorageAPI* pStoreAPI,
                                        uint64_t suid) {
  SOperatorNode* pNode = (SOperatorNode*)pTagCond;
  if (pNode->opType != OP_TYPE_IN) {
    return -1;
  }

  if ((pNode->pLeft != NULL && ((nodeType(pNode->pLeft) == QUERY_NODE_FUNCTION &&
                                 ((SFunctionNode*)pNode->pLeft)->funcType == FUNCTION_TYPE_TBNAME)) ||
       (nodeType(pNode->pLeft) == QUERY_NODE_COLUMN && ((SColumnNode*)pNode->pLeft)->colType == COLUMN_TYPE_TBNAME)) &&
      (pNode->pRight != NULL && nodeType(pNode->pRight) == QUERY_NODE_NODE_LIST)) {
    SNodeListNode* pList = (SNodeListNode*)pNode->pRight;

    int32_t len = LIST_LENGTH(pList->pNodeList);
    if (len <= 0) {
      return -1;
    }

    return getTableListInInOperator(pVnode, pExistedUidList, pList, pStoreAPI, suid);
  }

  return -1;
}

SSDataBlock* createTagValBlockForFilter(SArray* pColList, int32_t numOfTables, SArray* pUidTagList, void* pVnode,
                                        SStorageAPI* pStorageAPI) {
  int32_t      code = TSDB_CODE_SUCCESS;
  int32_t      lino = 0;
  SSDataBlock* pResBlock = NULL;
  code = createDataBlock(&pResBlock);
  QUERY_CHECK_CODE(code, lino, _end);

  for (int32_t i = 0; i < taosArrayGetSize(pColList); ++i) {
    SColumnInfoData colInfo = {0};
    void*           tmp = taosArrayGet(pColList, i);
    QUERY_CHECK_NULL(tmp, code, lino, _end, terrno);
    colInfo.info = *(SColumnInfo*)tmp;
    code = blockDataAppendColInfo(pResBlock, &colInfo);
    QUERY_CHECK_CODE(code, lino, _end);
  }

  code = blockDataEnsureCapacity(pResBlock, numOfTables);
  if (code != TSDB_CODE_SUCCESS) {
    terrno = code;
    blockDataDestroy(pResBlock);
    return NULL;
  }

  pResBlock->info.rows = numOfTables;

  int32_t numOfCols = taosArrayGetSize(pResBlock->pDataBlock);

  for (int32_t i = 0; i < numOfTables; i++) {
    STUidTagInfo* p1 = taosArrayGet(pUidTagList, i);
    QUERY_CHECK_NULL(p1, code, lino, _end, terrno);

    for (int32_t j = 0; j < numOfCols; j++) {
      SColumnInfoData* pColInfo = (SColumnInfoData*)taosArrayGet(pResBlock->pDataBlock, j);
      QUERY_CHECK_NULL(pColInfo, code, lino, _end, terrno);

      if (pColInfo->info.colId == -1) {  // tbname
        char str[TSDB_TABLE_FNAME_LEN + VARSTR_HEADER_SIZE] = {0};
        if (p1->name != NULL) {
          STR_TO_VARSTR(str, p1->name);
        } else {  // name is not retrieved during filter
          code = pStorageAPI->metaFn.getTableNameByUid(pVnode, p1->uid, str);
          QUERY_CHECK_CODE(code, lino, _end);
        }

        code = colDataSetVal(pColInfo, i, str, false);
        QUERY_CHECK_CODE(code, lino, _end);
#if TAG_FILTER_DEBUG
        qDebug("tagfilter uid:%ld, tbname:%s", *uid, str + 2);
#endif
      } else {
        STagVal tagVal = {0};
        tagVal.cid = pColInfo->info.colId;
        if (p1->pTagVal == NULL) {
          colDataSetNULL(pColInfo, i);
        } else {
          const char* p = pStorageAPI->metaFn.extractTagVal(p1->pTagVal, pColInfo->info.type, &tagVal);

          if (p == NULL || (pColInfo->info.type == TSDB_DATA_TYPE_JSON && ((STag*)p)->nTag == 0)) {
            colDataSetNULL(pColInfo, i);
          } else if (pColInfo->info.type == TSDB_DATA_TYPE_JSON) {
            code = colDataSetVal(pColInfo, i, p, false);
            QUERY_CHECK_CODE(code, lino, _end);
          } else if (IS_VAR_DATA_TYPE(pColInfo->info.type)) {
            if (IS_STR_DATA_BLOB(pColInfo->info.type)) {
              QUERY_CHECK_CODE(code = TSDB_CODE_BLOB_NOT_SUPPORT_TAG, lino, _end);
            }
            char* tmp = taosMemoryMalloc(tagVal.nData + VARSTR_HEADER_SIZE + 1);
            QUERY_CHECK_NULL(tmp, code, lino, _end, terrno);
            varDataSetLen(tmp, tagVal.nData);
            memcpy(tmp + VARSTR_HEADER_SIZE, tagVal.pData, tagVal.nData);
            code = colDataSetVal(pColInfo, i, tmp, false);
#if TAG_FILTER_DEBUG
            qDebug("tagfilter varch:%s", tmp + 2);
#endif
            taosMemoryFree(tmp);
            QUERY_CHECK_CODE(code, lino, _end);
          } else {
            code = colDataSetVal(pColInfo, i, (const char*)&tagVal.i64, false);
            QUERY_CHECK_CODE(code, lino, _end);
#if TAG_FILTER_DEBUG
            if (pColInfo->info.type == TSDB_DATA_TYPE_INT) {
              qDebug("tagfilter int:%d", *(int*)(&tagVal.i64));
            } else if (pColInfo->info.type == TSDB_DATA_TYPE_DOUBLE) {
              qDebug("tagfilter double:%f", *(double*)(&tagVal.i64));
            }
#endif
          }
        }
      }
    }
  }

_end:
  if (code != TSDB_CODE_SUCCESS) {
    blockDataDestroy(pResBlock);
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
    terrno = code;
    return NULL;
  }
  return pResBlock;
}

static int32_t doSetQualifiedUid(SArray* pUidList, const SArray* pUidTagList, SColumnInfoData* colData) {
  taosArrayClear(pUidList);

  int32_t       numOfTables = taosArrayGetSize(pUidTagList);
  bool* pResultList = colData == NULL ? NULL : (bool*)colData->pData;
  for (int32_t i = 0; i < numOfTables; ++i) {
    if (pResultList != NULL && !pResultList[i]) {
       continue;
    }
    STUidTagInfo* tmpTag = (STUidTagInfo*)taosArrayGet(pUidTagList, i);
    if (!tmpTag) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
      return terrno;
    }
    uint64_t uid = tmpTag->uid;
    qDebug("tagfilter get uid:%" PRId64, uid);

    void* tmp = taosArrayPush(pUidList, &uid);
    if (tmp == NULL) {
      return terrno;
    }
  }

  return TSDB_CODE_SUCCESS;
}

static int32_t copyExistedUids(SArray* pUidTagList, const SArray* pUidList) {
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t numOfExisted = taosArrayGetSize(pUidList);
  if (numOfExisted == 0) {
    return code;
  }

  for (int32_t i = 0; i < numOfExisted; ++i) {
    uint64_t* uid = taosArrayGet(pUidList, i);
    if (!uid) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
      return terrno;
    }
    STUidTagInfo info = {.uid = *uid};
    void*        tmp = taosArrayPush(pUidTagList, &info);
    if (!tmp) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
      return code;
    }
  }
  return code;
}

static EDealRes getCids(SNode** pNode, void* pContext) {
  SHashObj* colHash = (SHashObj*)pContext;
  col_id_t colId = 0;
  if (QUERY_NODE_COLUMN == nodeType((*pNode))) {
    colId = (*(SColumnNode**)pNode)->colId;
  } else {
    return DEAL_RES_CONTINUE;
  }

  int32_t tempRes = taosHashPut(colHash, &colId, sizeof(colId), pNode, sizeof((*pNode)));
  if (tempRes != TSDB_CODE_SUCCESS ) {
    return DEAL_RES_ERROR;
  }

  return DEAL_RES_CONTINUE;
}

SNode* getTagCondNodeForQueryTmq(void* tinfo) {
  SExecTaskInfo* pTaskInfo = (SExecTaskInfo*)tinfo;
  const char*    id = GET_TASKID(pTaskInfo);
  int32_t        code = 0;

  // traverse to the stream scanner node to add this table id
  SOperatorInfo* pInfo = NULL;
  code = extractOperatorInTree(pTaskInfo->pRoot, QUERY_NODE_PHYSICAL_PLAN_STREAM_SCAN, id, &pInfo);
  if (code != 0 || pInfo == NULL) {
    return NULL;
  }

  STmqQueryScanInfo* pScanInfo = pInfo->info;
  return pScanInfo->pTagCond;
}

SNode* getTagCondNodeForStableTmq(void* node) {
  return node == NULL ? NULL : ((SSubplan*)node)->pTagCond;
}

bool checkCidInTagCondition(SNode* pTagCond, SArray* cidList) {
  if (pTagCond == NULL) { 
    return false;
  }
  bool result = true;
  SHashObj *colHash = taosHashInit(4, taosGetDefaultHashFunction(TSDB_DATA_TYPE_SMALLINT), true, HASH_NO_LOCK);
  if (colHash == NULL) {
    goto end;
  }

  nodesRewriteExprPostOrder(&pTagCond, getCids, (void*)colHash);
  if (cidList != NULL) {
    int32_t numOfCols = taosArrayGetSize(cidList);
    int32_t i = 0;
    for (; i < numOfCols; ++i) {
      col_id_t* pCid = taosArrayGet(cidList, i);
      void* data = taosHashGet(colHash, pCid, sizeof(*pCid));
      if (data != NULL) break;
    }
    if (i == numOfCols) { // no tag column involved in condition
      result = false;
      goto end;
    }
  }

end:
  taosHashCleanup(colHash);
  return result;
}

int32_t doFilterByTagCond(int64_t suid, SArray* pUidList, SNode* pTagCond, void* pVnode,
                                 SIdxFltStatus status, SStorageAPI* pAPI, void* pStreamInfo) {
  if (pTagCond == NULL) {
    return TSDB_CODE_SUCCESS;
  }

  terrno = TSDB_CODE_SUCCESS;

  int32_t      lino = 0;
  int32_t      code = TSDB_CODE_SUCCESS;
  SArray*      pBlockList = NULL;
  SSDataBlock* pResBlock = NULL;
  SScalarParam output = {0};
  SArray*      pUidTagList = NULL;

  SDataType type = {.type = TSDB_DATA_TYPE_BOOL, .bytes = sizeof(bool)};

  pUidTagList = taosArrayInit(10, sizeof(STUidTagInfo));
  QUERY_CHECK_NULL(pUidTagList, code, lino, end, terrno);

  // pUidList size is 0 if tagIndex is NULL and in query condition
  code = copyExistedUids(pUidTagList, pUidList);
  QUERY_CHECK_CODE(code, lino, end);

  // Narrow down the scope of the tablelist set if there is tbname in condition and And Logical operator
  code = optimizeTbnameInCond(pVnode, suid, pUidTagList, pTagCond, pAPI);
  if (code == 0) {
    if (nodeType(pTagCond) == QUERY_NODE_OPERATOR) {
      goto end;
    }
  } else {
    qDebug("pUidTagList size:%d", (int32_t)taosArrayGetSize(pUidTagList));

    FilterCondType condType = checkTagCond(pTagCond);
    if (((condType == FILTER_NO_LOGIC || condType == FILTER_AND) && status != SFLT_NOT_INDEX) || // (super table) use tagIndex and operator is and
        (status == SFLT_NOT_INDEX && taosArrayGetSize(pUidTagList) > 0)) {                       // (child table with tagCond)
      code = pAPI->metaFn.getTableTagsByUid(pVnode, suid, pUidTagList);
    } else {
      taosArrayClearEx(pUidTagList, freeItem);       // clear tablelist if using tagIndex and or condition
      code = pAPI->metaFn.getTableTags(pVnode, suid, pUidTagList);
    }
    if (code != TSDB_CODE_SUCCESS) {
      qError("failed to get table tags from meta, reason:%s, suid:%" PRIu64, tstrerror(code),suid);
      terrno = code;
      QUERY_CHECK_CODE(code, lino, end);
    }
  }

  qDebug("final pUidTagList size:%d", (int32_t)taosArrayGetSize(pUidTagList));

  int32_t numOfTables = taosArrayGetSize(pUidTagList);
  if (numOfTables == 0) {
    goto end;
  }

  SArray* pColList = NULL;
  code = qGetColumnsFromNodeList(pTagCond, false, &pColList); 
  if (code != TSDB_CODE_SUCCESS) {
    goto end;
  }
  pResBlock = createTagValBlockForFilter(pColList, numOfTables, pUidTagList, pVnode, pAPI);
  taosArrayDestroy(pColList);
  if (pResBlock == NULL) {
    code = terrno;
    QUERY_CHECK_CODE(code, lino, end);
  }

  //fprintDataBlock(pResBlock, "tagFilter", "", 0);

  //  int64_t st1 = taosGetTimestampUs();
  //  qDebug("generate tag block rows:%d, cost:%ld us", rows, st1-st);
  pBlockList = taosArrayInit(2, POINTER_BYTES);
  QUERY_CHECK_NULL(pBlockList, code, lino, end, terrno);

  void* tmp = taosArrayPush(pBlockList, &pResBlock);
  QUERY_CHECK_NULL(tmp, code, lino, end, terrno);

  code = createResultData(&type, numOfTables, &output);
  if (code != TSDB_CODE_SUCCESS) {
    terrno = code;
    QUERY_CHECK_CODE(code, lino, end);
  }

  gTaskScalarExtra.pStreamInfo = pStreamInfo;
  gTaskScalarExtra.pStreamRange = NULL;
  code = scalarCalculate(pTagCond, pBlockList, &output, &gTaskScalarExtra);
  if (code != TSDB_CODE_SUCCESS) {
    qError("failed to calculate scalar, reason:%s", tstrerror(code));
    terrno = code;
    QUERY_CHECK_CODE(code, lino, end);
  }

end:
  if (code == 0) {
    code = doSetQualifiedUid(pUidList, pUidTagList, output.columnData);
    lino = __LINE__;
  }
  
  if (code != 0) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  blockDataDestroy(pResBlock);
  taosArrayDestroy(pBlockList);
  taosArrayDestroyEx(pUidTagList, freeItem);

  colDataDestroy(output.columnData);
  taosMemoryFreeClear(output.columnData);
  return code;
}

typedef struct {
  int32_t code;
  SStreamRuntimeFuncInfo* pStreamRuntimeInfo;
} PlaceHolderContext;

static EDealRes replacePlaceHolderColumn(SNode** pNode, void* pContext) {
  PlaceHolderContext* pData = (PlaceHolderContext*)pContext;
  if (QUERY_NODE_FUNCTION != nodeType((*pNode))) {
    return DEAL_RES_CONTINUE;
  }
  SFunctionNode* pFuncNode = *(SFunctionNode**)(pNode);
  if (!fmIsStreamPesudoColVal(pFuncNode->funcId)) {
    return DEAL_RES_CONTINUE;
  }
  pData->code = fmSetStreamPseudoFuncParamVal(pFuncNode->funcId, pFuncNode->pParameterList, pData->pStreamRuntimeInfo);
  if (pData->code != TSDB_CODE_SUCCESS) {
    return DEAL_RES_ERROR;
  }
  SNode* pFirstParam = nodesListGetNode(pFuncNode->pParameterList, 0);
  ((SValueNode*)pFirstParam)->translate = true;
  SValueNode* res = NULL;
  pData->code = nodesCloneNode(pFirstParam, (SNode**)&res);
  if (NULL == res) {
    return DEAL_RES_ERROR;
  }
  nodesDestroyNode(*pNode);
  *pNode = (SNode*)res;

  return DEAL_RES_CONTINUE;
}

static void extractTagColId(SOperatorNode* pOpNode, SArray* pColIdArray) {
  SNode* pLeft = pOpNode->pLeft;
  SNode* pRight = pOpNode->pRight;
  SColumnNode* pColNode = nodeType(pLeft) == QUERY_NODE_COLUMN ?
    (SColumnNode*)pLeft : (SColumnNode*)pRight;

  col_id_t colId = pColNode->colId;
  void* _tmp = taosArrayPush(pColIdArray, &colId);
}

static int32_t buildTagCondKey(
  const SNode* pTagCond, char** pTagCondKey,
  int32_t* tagCondKeyLen, SArray** pTagColIds) {
  if (NULL == pTagCond ||
    (nodeType(pTagCond) != QUERY_NODE_OPERATOR &&
      nodeType(pTagCond) != QUERY_NODE_LOGIC_CONDITION)) {
    qError("invalid parameter to extract tag filter symbol");
    return TSDB_CODE_INTERNAL_ERROR;
  }
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;
  *pTagColIds = taosArrayInit(4, sizeof(col_id_t));

  if (nodeType(pTagCond) == QUERY_NODE_OPERATOR) {
    extractTagColId((SOperatorNode*)pTagCond, *pTagColIds);
  } else if (nodeType(pTagCond) == QUERY_NODE_LOGIC_CONDITION) {
    SNode* pChild = NULL;
    FOREACH(pChild, ((SLogicConditionNode*)pTagCond)->pParameterList) {
      extractTagColId((SOperatorNode*)pChild, *pTagColIds);
    }
  }

  taosArraySort(*pTagColIds, compareUint16Val);

  // encode ordered colIds into key string, separated by ','
  *tagCondKeyLen =
    (int32_t)(taosArrayGetSize(*pTagColIds) * (sizeof(col_id_t) + 1) - 1);
  *pTagCondKey = (char*)taosMemoryCalloc(1, *tagCondKeyLen);
  TSDB_CHECK_NULL(*pTagCondKey, code, lino, _end, terrno);
  char* pStart = *pTagCondKey;
  for (int32_t i = 0; i < taosArrayGetSize(*pTagColIds); ++i) {
    col_id_t* pColId = (col_id_t*)taosArrayGet(*pTagColIds, i);
    TSDB_CHECK_NULL(pColId, code, lino, _end, terrno);
    memcpy(pStart, pColId, sizeof(col_id_t));
    pStart += sizeof(col_id_t);
    if (i != taosArrayGetSize(*pTagColIds) - 1) {
      *pStart = ',';
      pStart += 1;
    }
  }

_end:
  if (TSDB_CODE_SUCCESS != code) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
    terrno = code;
  }
  return code;
}

static EDealRes canOptimizeTagCondFilter(SNode* pTagCond, void* pContext) {
  if (NULL == pTagCond) {
    *(bool*)pContext = false;
    return DEAL_RES_END;
  }
  if (nodeType(pTagCond) == QUERY_NODE_VALUE ||
    nodeType(pTagCond) == QUERY_NODE_COLUMN) {
    return DEAL_RES_CONTINUE;
  }
  if (nodeType(pTagCond) == QUERY_NODE_OPERATOR &&
    ((SOperatorNode*)pTagCond)->opType == OP_TYPE_EQUAL) {
    return DEAL_RES_CONTINUE;
  }
  if (nodeType(pTagCond) == QUERY_NODE_LOGIC_CONDITION &&
    ((SLogicConditionNode*)pTagCond)->condType == LOGIC_COND_TYPE_AND) {
    return DEAL_RES_CONTINUE;
  }
  if (nodeType(pTagCond) == QUERY_NODE_FUNCTION &&
    fmIsStreamPesudoColVal(((SFunctionNode*)pTagCond)->funcId)) {
    return DEAL_RES_CONTINUE;
  }
  *(bool*)pContext = false;
  return DEAL_RES_END;
}

int32_t getTableList(void* pVnode, SScanPhysiNode* pScanNode, SNode* pTagCond, SNode* pTagIndexCond,
                     STableListInfo* pListInfo, uint8_t* digest, const char* idstr, SStorageAPI* pStorageAPI, void* pStreamInfo) {
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;
  size_t  numOfTables = 0;

  pListInfo->idInfo.suid = pScanNode->suid;
  pListInfo->idInfo.tableType = pScanNode->tableType;

  SArray* pUidList = taosArrayInit(8, sizeof(uint64_t));
  QUERY_CHECK_NULL(pUidList, code, lino, end, terrno);

  char*   pTagCondKey = NULL;
  int32_t tagCondKeyLen;
  SArray* pTagColIds = NULL;
  char*   pPayload = NULL;
  SIdxFltStatus status = SFLT_NOT_INDEX;

  qTrace("getTableList called, suid:%" PRIu64
    ", tagCond:%p, tagIndexCond:%p, %d %d", pScanNode->suid, pTagCond,
    pTagIndexCond, pScanNode->tableType, pScanNode->virtualStableScan);
  if (pScanNode->tableType != TSDB_SUPER_TABLE && !pScanNode->virtualStableScan) {
    pListInfo->idInfo.uid = pScanNode->uid;
    if (pStorageAPI->metaFn.isTableExisted(pVnode, pScanNode->uid)) {
      void* tmp = taosArrayPush(pUidList, &pScanNode->uid);
      QUERY_CHECK_NULL(tmp, code, lino, end, terrno);
    }
    code = doFilterByTagCond(pScanNode->suid, pUidList, pTagCond, pVnode, status, pStorageAPI, pStreamInfo);
    QUERY_CHECK_CODE(code, lino, end);
  } else {
    bool      isStream = (pStreamInfo != NULL);
    bool      hasTagCond = (pTagCond != NULL);
    bool      canCacheTagEqCondFilter = false;
    T_MD5_CTX context = {0};

    qTrace("start to get table list by tag filter, suid:%" PRIu64
      ",tsStableTagFilterCache:%d, tsTagFilterCache:%d", 
      pScanNode->suid, tsStableTagFilterCache, tsTagFilterCache);

    bool acquired = false;
    // first, check whether we can use stable tag filter cache
    if (tsStableTagFilterCache && isStream && hasTagCond) {
      canCacheTagEqCondFilter = true;
      nodesWalkExpr(pTagCond, canOptimizeTagCondFilter,
        (void*)&canCacheTagEqCondFilter);
    }
    if (canCacheTagEqCondFilter) {
      qDebug("%s, stable tag filter condition can be optimized", idstr);
      if (((SStreamRuntimeFuncInfo*)pStreamInfo)->hasPlaceHolder) {
        SNode* tmp = NULL;
        code = nodesCloneNode((SNode*)pTagCond, &tmp);
        QUERY_CHECK_CODE(code, lino, end);

        PlaceHolderContext ctx = {.code = TSDB_CODE_SUCCESS, .pStreamRuntimeInfo = (SStreamRuntimeFuncInfo*)pStreamInfo};
        nodesRewriteExpr(&tmp, replacePlaceHolderColumn, (void*)&ctx);
        if (TSDB_CODE_SUCCESS != ctx.code) {
          nodesDestroyNode(tmp);
          code = ctx.code;
          goto end;
        }
        code = genStableTagFilterDigest(tmp, &context);
        nodesDestroyNode(tmp);
      } else {
        code = genStableTagFilterDigest(pTagCond, &context);
      }
      QUERY_CHECK_CODE(code, lino, end);

      code = buildTagCondKey(
        pTagCond, &pTagCondKey, &tagCondKeyLen, &pTagColIds);
      QUERY_CHECK_CODE(code, lino, end);
      code = pStorageAPI->metaFn.getStableCachedTableList(
        pVnode, pScanNode->suid, pTagCondKey, tagCondKeyLen,
        context.digest, tListLen(context.digest), pUidList, &acquired);
      QUERY_CHECK_CODE(code, lino, end);
    } else if (tsTagFilterCache) {
      // second, try to use normal tag filter cache
      qDebug("%s using normal tag filter cache", idstr);
      if (pStreamInfo != NULL && ((SStreamRuntimeFuncInfo*)pStreamInfo)->hasPlaceHolder) {
        SNode* tmp = NULL;
        code = nodesCloneNode((SNode*)pTagCond, &tmp);
        QUERY_CHECK_CODE(code, lino, end);

        PlaceHolderContext ctx = {.code = TSDB_CODE_SUCCESS, .pStreamRuntimeInfo = (SStreamRuntimeFuncInfo*)pStreamInfo};
        nodesRewriteExpr(&tmp, replacePlaceHolderColumn, (void*)&ctx);
        if (TSDB_CODE_SUCCESS != ctx.code) {
          nodesDestroyNode(tmp);
          code = ctx.code;
          goto end;
        }
        code = genTagFilterDigest(tmp, &context);
        nodesDestroyNode(tmp);
      } else {
        code = genTagFilterDigest(pTagCond, &context);
      }
      // try to retrieve the result from meta cache
      QUERY_CHECK_CODE(code, lino, end);      
      code = pStorageAPI->metaFn.getCachedTableList(
        pVnode, pScanNode->suid, context.digest,
        tListLen(context.digest), pUidList, &acquired);
      QUERY_CHECK_CODE(code, lino, end);
    }
    if (acquired) {
      taosArrayDestroy(pTagColIds);
      pTagColIds = NULL;
      
      if (digest != NULL) {
        digest[0] = 1;
        memcpy(digest + 1, context.digest, tListLen(context.digest));
      }
      
      qDebug("suid:%" PRIu64 ", %s retrieve table uid list from cache, numOfTables:%d", 
        pScanNode->suid, idstr, (int32_t)taosArrayGetSize(pUidList));
      goto end;
    } else {
      qDebug("suid:%" PRIu64 
        ", failed to get table uid list from cache", pScanNode->suid);
    }

    if (!pTagCond) {  // no tag filter condition exists, let's fetch all tables of this super table
      code = pStorageAPI->metaFn.getChildTableList(pVnode, pScanNode->suid, pUidList);
      QUERY_CHECK_CODE(code, lino, end);
      qTrace("no tag filter, get all child tables, numOfTables:%d", (int32_t)taosArrayGetSize(pUidList));
    } else {
      SIdxFltStatus status = SFLT_NOT_INDEX;
      if (pTagIndexCond) {
        void* pIndex = pStorageAPI->metaFn.getInvertIndex(pVnode);

        SIndexMetaArg metaArg = {.metaEx = pVnode,
                                 .idx = pStorageAPI->metaFn.storeGetIndexInfo(pVnode),
                                 .ivtIdx = pIndex,
                                 .suid = pScanNode->uid};
        code = doFilterTag(pTagIndexCond, &metaArg, pUidList, &status, &pStorageAPI->metaFilter);
        if (code != 0 || status == SFLT_NOT_INDEX) {  // temporarily disable it for performance sake
          qDebug("failed to get tableIds from index, suid:%" PRIu64 ", uidListSize:%d", pScanNode->uid, (int32_t)taosArrayGetSize(pUidList));
        } else {
          qDebug("succ to get filter result, table num: %d", (int)taosArrayGetSize(pUidList));
        }
      }
    }
    qTrace("after index filter, pTagCond:%p uidListSize:%d", pTagCond, (int32_t)taosArrayGetSize(pUidList));
    code = doFilterByTagCond(pScanNode->suid, pUidList, pTagCond, pVnode, status, pStorageAPI, pStreamInfo);
    QUERY_CHECK_CODE(code, lino, end);

    // let's add the filter results into meta-cache
    numOfTables = taosArrayGetSize(pUidList);

    if (canCacheTagEqCondFilter) {
      qInfo("%s, suid:%" PRIu64 ", add uid list to stable tag filter cache, "
            "uidListSize:%d, origin key:%" PRIu64 ",%" PRIu64,
            idstr, pScanNode->suid, (int32_t)numOfTables,
            *(uint64_t*)context.digest, *(uint64_t*)(context.digest + 8));

      code = pStorageAPI->metaFn.putStableCachedTableList(
        pVnode, pScanNode->suid, pTagCondKey, tagCondKeyLen,
        context.digest, tListLen(context.digest),
        pUidList, &pTagColIds);
      QUERY_CHECK_CODE(code, lino, end);

      if (digest != NULL) {
        digest[0] = 1;
        memcpy(digest + 1, context.digest, tListLen(context.digest));
      }
    } else if (tsTagFilterCache) {
      qInfo("%s, suid:%" PRIu64 ", add uid list to normal tag filter cache, "
            "uidListSize:%d, origin key:%" PRIu64 ",%" PRIu64,
            idstr, pScanNode->suid, (int32_t)numOfTables,
            *(uint64_t*)context.digest, *(uint64_t*)(context.digest + 8));
      size_t size = numOfTables * sizeof(uint64_t) + sizeof(int32_t);
      pPayload = taosMemoryMalloc(size);
      QUERY_CHECK_NULL(pPayload, code, lino, end, terrno);

      *(int32_t*)pPayload = (int32_t)numOfTables;
      if (numOfTables > 0) {
        void* tmp = taosArrayGet(pUidList, 0);
        QUERY_CHECK_NULL(tmp, code, lino, end, terrno);
        memcpy(pPayload + sizeof(int32_t), tmp, numOfTables * sizeof(uint64_t));
      }

      code = pStorageAPI->metaFn.putCachedTableList(pVnode, pScanNode->suid,
                                                    context.digest,
                                                    tListLen(context.digest),
                                                    pPayload, size, 1);
      if (TSDB_CODE_SUCCESS == code) {
        /*
          data referenced by pPayload is used in lru cache,
          reset pPayload to NULL to avoid being freed in _error block
        */
        pPayload = NULL;
      } else {
        if (TSDB_CODE_DUP_KEY == code) {
          /*
            another thread has already put the same key into cache,
            we can just ignore this error
          */
          code = TSDB_CODE_SUCCESS;
        }
        QUERY_CHECK_CODE(code, lino, end);
      }


      if (digest != NULL) {
        digest[0] = 1;
        memcpy(digest + 1, context.digest, tListLen(context.digest));
      }
    }
  }

  qDebug("%s, table list with %d uids built", idstr, (int32_t)numOfTables);

end:
  if (code == 0) {
     STableKeyInfo info = {.uid = 0, .groupId = 0};
    for (int32_t i = 0; i < taosArrayGetSize(pUidList); ++i) {
      int64_t* uid = (int64_t*)taosArrayGet(pUidList, i);
      QUERY_CHECK_NULL(uid, code, lino, end, terrno);

      info.uid = *uid;
        //qInfo("doSetQualifiedUid row:%d added to pTableList", i);
      void* p = taosArrayPush(pListInfo->pTableList, &info);
      QUERY_CHECK_NULL(p, code, lino, end, terrno);
    }
  } else {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  taosArrayDestroy(pUidList);
  taosArrayDestroy(pTagColIds);
  taosMemFreeClear(pTagCondKey);
  taosMemFreeClear(pPayload);
  return code;
}

int32_t qGetTableList(int64_t suid, void* pVnode, void* node, SArray** tableList, void* pTaskInfo) {
  int32_t        code = TSDB_CODE_SUCCESS;
  int32_t        lino = 0;
  SSubplan*      pSubplan = (SSubplan*)node;
  SScanPhysiNode pNode = {0};
  pNode.suid = suid;
  pNode.uid = suid;
  pNode.tableType = TSDB_SUPER_TABLE;

  STableListInfo* pTableListInfo = tableListCreate();
  QUERY_CHECK_NULL(pTableListInfo, code, lino, _end, terrno);
  code = getTableList(pVnode, &pNode, pSubplan ? pSubplan->pTagCond : NULL, pSubplan ? pSubplan->pTagIndexCond : NULL,
                      pTableListInfo, NULL, "qGetTableList", &((SExecTaskInfo*)pTaskInfo)->storageAPI, NULL);
  QUERY_CHECK_CODE(code, lino, _end);
  *tableList = pTableListInfo->pTableList;
  pTableListInfo->pTableList = NULL;

_end:
  tableListDestroy(pTableListInfo);
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  return code;
}

size_t getTableTagsBufLen(const SNodeList* pGroups) {
  size_t keyLen = 0;

  SNode* node;
  FOREACH(node, pGroups) {
    SExprNode* pExpr = (SExprNode*)node;
    keyLen += pExpr->resType.bytes;
  }

  keyLen += sizeof(int8_t) * LIST_LENGTH(pGroups);
  return keyLen;
}

int32_t getGroupIdFromTagsVal(void* pVnode, uint64_t uid, SNodeList* pGroupNode, char* keyBuf, uint64_t* pGroupId,
                              SStorageAPI* pAPI) {
  SMetaReader mr = {0};

  pAPI->metaReaderFn.initReader(&mr, pVnode, META_READER_LOCK, &pAPI->metaFn);
  if (pAPI->metaReaderFn.getEntryGetUidCache(&mr, uid) != 0) {  // table not exist
    pAPI->metaReaderFn.clearReader(&mr);
    return TSDB_CODE_PAR_TABLE_NOT_EXIST;
  }

  SNodeList* groupNew = NULL;
  int32_t    code = nodesCloneList(pGroupNode, &groupNew);
  if (TSDB_CODE_SUCCESS != code) {
    pAPI->metaReaderFn.clearReader(&mr);
    return code;
  }

  STransTagExprCtx ctx = {.code = 0, .pReader = &mr};
  nodesRewriteExprsPostOrder(groupNew, doTranslateTagExpr, &ctx);
  if (TSDB_CODE_SUCCESS != ctx.code) {
    nodesDestroyList(groupNew);
    pAPI->metaReaderFn.clearReader(&mr);
    return code;
  }
  char* isNull = (char*)keyBuf;
  char* pStart = (char*)keyBuf + sizeof(int8_t) * LIST_LENGTH(pGroupNode);

  SNode*  pNode;
  int32_t index = 0;
  FOREACH(pNode, groupNew) {
    SNode*  pNew = NULL;
    int32_t code = scalarCalculateConstants(pNode, &pNew);
    if (TSDB_CODE_SUCCESS == code) {
      REPLACE_NODE(pNew);
    } else {
      nodesDestroyList(groupNew);
      pAPI->metaReaderFn.clearReader(&mr);
      return code;
    }

    if (nodeType(pNew) != QUERY_NODE_VALUE) {
      nodesDestroyList(groupNew);
      pAPI->metaReaderFn.clearReader(&mr);
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR));
      return TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
    }
    SValueNode* pValue = (SValueNode*)pNew;

    if (pValue->node.resType.type == TSDB_DATA_TYPE_NULL || pValue->isNull) {
      isNull[index++] = 1;
      continue;
    } else {
      isNull[index++] = 0;
      char* data = nodesGetValueFromNode(pValue);
      if (pValue->node.resType.type == TSDB_DATA_TYPE_JSON) {
        if (tTagIsJson(data)) {
          terrno = TSDB_CODE_QRY_JSON_IN_GROUP_ERROR;
          nodesDestroyList(groupNew);
          pAPI->metaReaderFn.clearReader(&mr);
          return terrno;
        }
        int32_t len = getJsonValueLen(data);
        memcpy(pStart, data, len);
        pStart += len;
      } else if (IS_VAR_DATA_TYPE(pValue->node.resType.type)) {
        if (IS_STR_DATA_BLOB(pValue->node.resType.type)) {
          return TSDB_CODE_BLOB_NOT_SUPPORT_TAG;
        }
        memcpy(pStart, data, varDataTLen(data));
        pStart += varDataTLen(data);
      } else {
        memcpy(pStart, data, pValue->node.resType.bytes);
        pStart += pValue->node.resType.bytes;
      }
    }
  }

  int32_t len = (int32_t)(pStart - (char*)keyBuf);
  *pGroupId = calcGroupId(keyBuf, len);

  nodesDestroyList(groupNew);
  pAPI->metaReaderFn.clearReader(&mr);

  return TSDB_CODE_SUCCESS;
}

SArray* makeColumnArrayFromList(SNodeList* pNodeList) {
  if (!pNodeList) {
    return NULL;
  }

  size_t  numOfCols = LIST_LENGTH(pNodeList);
  SArray* pList = taosArrayInit(numOfCols, sizeof(SColumn));
  if (pList == NULL) {
    return NULL;
  }

  for (int32_t i = 0; i < numOfCols; ++i) {
    SColumnNode* pColNode = (SColumnNode*)nodesListGetNode(pNodeList, i);
    if (!pColNode) {
      taosArrayDestroy(pList);
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR));
      return NULL;
    }

    // todo extract method
    SColumn c = {0};
    c.slotId = pColNode->slotId;
    c.colId = pColNode->colId;
    c.type = pColNode->node.resType.type;
    c.bytes = pColNode->node.resType.bytes;
    c.precision = pColNode->node.resType.precision;
    c.scale = pColNode->node.resType.scale;

    void* tmp = taosArrayPush(pList, &c);
    if (!tmp) {
      taosArrayDestroy(pList);
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
      return NULL;
    }
  }

  return pList;
}

int32_t extractColMatchInfo(SNodeList* pNodeList, SDataBlockDescNode* pOutputNodeList, int32_t* numOfOutputCols,
                            int32_t type, SColMatchInfo* pMatchInfo) {
  size_t  numOfCols = LIST_LENGTH(pNodeList);
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;
  bool    colIdOrdered = true;
  bool    hasPrevColId = false;
  int32_t prevColId = 0;

  pMatchInfo->matchType = type;

  SArray* pList = taosArrayInit(numOfCols, sizeof(SColMatchItem));
  if (pList == NULL) {
    code = terrno;
    return code;
  }

  SColMatchItem** infoBySlot = NULL;
  if (numOfCols > 0) {
    infoBySlot = taosMemoryCalloc(numOfCols, sizeof(*infoBySlot));
    if (infoBySlot == NULL) {
      code = terrno;
      goto _end;
    }
  }

  SNode* node = NULL;
  FOREACH(node, pNodeList) {
    STargetNode* pNode = (STargetNode*)node;
    QUERY_CHECK_NULL(pNode, code, lino, _end, terrno);
    if (nodeType(pNode->pExpr) == QUERY_NODE_COLUMN) {
      SColumnNode* pColNode = (SColumnNode*)pNode->pExpr;

      SColMatchItem c = {.needOutput = true};
      c.colId = pColNode->colId;
      c.srcSlotId = pColNode->slotId;
      c.dstSlotId = pNode->slotId;
      c.isPk = pColNode->isPk;
      c.dataType = pColNode->node.resType;
      void* tmp = taosArrayPush(pList, &c);
      QUERY_CHECK_NULL(tmp, code, lino, _end, terrno);
      if (hasPrevColId) {
        if (c.colId < prevColId) {
          colIdOrdered = false;
        }
      } else {
        hasPrevColId = true;
      }
      prevColId = c.colId;
      if (pNode->slotId >= 0 && pNode->slotId < numOfCols) {
        infoBySlot[pNode->slotId] = (SColMatchItem*)taosArrayGet(pList, taosArrayGetSize(pList) - 1);
      }
    }
  }
  // set the output flag for each column in SColMatchInfo, according to the
  *numOfOutputCols = 0;
  SNode* slotNode = NULL;
  FOREACH(slotNode, pOutputNodeList->pSlots) {
    SSlotDescNode* pNode = (SSlotDescNode*)slotNode;
    QUERY_CHECK_NULL(pNode, code, lino, _end, terrno);

    // todo: add reserve flag check
    // it is a column reserved for the arithmetic expression calculation
    if (pNode->slotId >= numOfCols) {
      (*numOfOutputCols) += 1;
      continue;
    }

    SColMatchItem* info = infoBySlot ? infoBySlot[pNode->slotId] : NULL;

    if (pNode->output) {
      (*numOfOutputCols) += 1;
    } else if (info != NULL) {
      // select distinct tbname from stb where tbname='abc';
      info->needOutput = false;
    }
  }

  pMatchInfo->pList = pList;
  pMatchInfo->colIdOrdered = colIdOrdered;

_end:
  taosMemoryFree(infoBySlot);
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  return code;
}

static SResSchema createResSchema(int32_t type, int32_t bytes, int32_t slotId, int32_t scale, int32_t precision,
                                  const char* name) {
  SResSchema s = {0};
  s.scale = scale;
  s.type = type;
  s.bytes = bytes;
  s.slotId = slotId;
  s.precision = precision;
  tstrncpy(s.name, name, tListLen(s.name));

  return s;
}

static SColumn* createColumn(int32_t blockId, int32_t slotId, int32_t colId, SDataType* pType, EColumnType colType) {
  SColumn* pCol = taosMemoryCalloc(1, sizeof(SColumn));
  if (pCol == NULL) {
    return NULL;
  }

  pCol->slotId = slotId;
  pCol->colId = colId;
  pCol->bytes = pType->bytes;
  pCol->type = pType->type;
  pCol->scale = pType->scale;
  pCol->precision = pType->precision;
  pCol->dataBlockId = blockId;
  pCol->colType = colType;
  return pCol;
}

int32_t createExprFromOneNode(SExprInfo* pExp, SNode* pNode, int16_t slotId) {
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;
  pExp->base.numOfParams = 0;
  pExp->base.pParam = NULL;
  pExp->pExpr = taosMemoryCalloc(1, sizeof(tExprNode));
  QUERY_CHECK_NULL(pExp->pExpr, code, lino, _end, terrno);

  pExp->pExpr->_function.num = 1;
  pExp->pExpr->_function.functionId = -1;

  int32_t type = nodeType(pNode);
  // it is a project query, or group by column
  if (type == QUERY_NODE_COLUMN) {
    pExp->pExpr->nodeType = QUERY_NODE_COLUMN;
    SColumnNode* pColNode = (SColumnNode*)pNode;

    pExp->base.pParam = taosMemoryCalloc(1, sizeof(SFunctParam));
    QUERY_CHECK_NULL(pExp->base.pParam, code, lino, _end, terrno);

    pExp->base.numOfParams = 1;

    SDataType* pType = &pColNode->node.resType;
    pExp->base.resSchema =
        createResSchema(pType->type, pType->bytes, slotId, pType->scale, pType->precision, pColNode->colName);

    pExp->base.pParam[0].pCol =
        createColumn(pColNode->dataBlockId, pColNode->slotId, pColNode->colId, pType, pColNode->colType);
    QUERY_CHECK_NULL(pExp->base.pParam[0].pCol, code, lino, _end, terrno);

    pExp->base.pParam[0].type = FUNC_PARAM_TYPE_COLUMN;
  } else if (type == QUERY_NODE_VALUE) {
    pExp->pExpr->nodeType = QUERY_NODE_VALUE;
    SValueNode* pValNode = (SValueNode*)pNode;

    pExp->base.pParam = taosMemoryCalloc(1, sizeof(SFunctParam));
    QUERY_CHECK_NULL(pExp->base.pParam, code, lino, _end, terrno);

    pExp->base.numOfParams = 1;

    SDataType* pType = &pValNode->node.resType;
    pExp->base.resSchema =
        createResSchema(pType->type, pType->bytes, slotId, pType->scale, pType->precision, pValNode->node.aliasName);
    pExp->base.pParam[0].type = FUNC_PARAM_TYPE_VALUE;
    code = nodesValueNodeToVariant(pValNode, &pExp->base.pParam[0].param);
    QUERY_CHECK_CODE(code, lino, _end);
  } else if (type == QUERY_NODE_REMOTE_VALUE) {
    SRemoteValueNode* pRemote = (SRemoteValueNode*)pNode;
    code = qFetchRemoteNode(gTaskScalarExtra.pSubJobCtx, pRemote->subQIdx, pNode);
    QUERY_CHECK_CODE(code, lino, _end);

    pExp->pExpr->nodeType = QUERY_NODE_VALUE;
    SValueNode* pValNode = (SValueNode*)pNode;

    pExp->base.pParam = taosMemoryCalloc(1, sizeof(SFunctParam));
    QUERY_CHECK_NULL(pExp->base.pParam, code, lino, _end, terrno);

    pExp->base.numOfParams = 1;

    SDataType* pType = &pValNode->node.resType;
    pExp->base.resSchema =
        createResSchema(pType->type, pType->bytes, slotId, pType->scale, pType->precision, pValNode->node.aliasName);
    pExp->base.pParam[0].type = FUNC_PARAM_TYPE_VALUE;
    code = nodesValueNodeToVariant(pValNode, &pExp->base.pParam[0].param);
    QUERY_CHECK_CODE(code, lino, _end);
  } else if (type == QUERY_NODE_FUNCTION) {
    pExp->pExpr->nodeType = QUERY_NODE_FUNCTION;
    SFunctionNode* pFuncNode = (SFunctionNode*)pNode;

    SDataType* pType = &pFuncNode->node.resType;
    pExp->base.resSchema =
        createResSchema(pType->type, pType->bytes, slotId, pType->scale, pType->precision, pFuncNode->node.aliasName);
    tExprNode* pExprNode = pExp->pExpr;

    pExprNode->_function.functionId = pFuncNode->funcId;
    pExprNode->_function.pFunctNode = pFuncNode;
    pExprNode->_function.functionType = pFuncNode->funcType;

    tstrncpy(pExprNode->_function.functionName, pFuncNode->functionName, tListLen(pExprNode->_function.functionName));

    pExp->base.pParamList = pFuncNode->pParameterList;
#if 1
    // todo refactor: add the parameter for tbname function
    const char* name = "tbname";
    int32_t     len = strlen(name);

    if (!pFuncNode->pParameterList && (memcmp(pExprNode->_function.functionName, name, len) == 0) &&
        pExprNode->_function.functionName[len] == 0) {
      pFuncNode->pParameterList = NULL;
      int32_t     code = nodesMakeList(&pFuncNode->pParameterList);
      SValueNode* res = NULL;
      if (TSDB_CODE_SUCCESS == code) {
        code = nodesMakeNode(QUERY_NODE_VALUE, (SNode**)&res);
      }
      QUERY_CHECK_CODE(code, lino, _end);
      res->node.resType = (SDataType){.bytes = sizeof(int64_t), .type = TSDB_DATA_TYPE_BIGINT};
      code = nodesListAppend(pFuncNode->pParameterList, (SNode*)res);
      if (code != TSDB_CODE_SUCCESS) {
        nodesDestroyNode((SNode*)res);
        res = NULL;
      }
      QUERY_CHECK_CODE(code, lino, _end);
    }
#endif

    int32_t numOfParam = LIST_LENGTH(pFuncNode->pParameterList);

    pExp->base.pParam = taosMemoryCalloc(numOfParam, sizeof(SFunctParam));
    QUERY_CHECK_NULL(pExp->base.pParam, code, lino, _end, terrno);
    pExp->base.numOfParams = numOfParam;

    for (int32_t j = 0; j < numOfParam && TSDB_CODE_SUCCESS == code; ++j) {
      SNode* p1 = nodesListGetNode(pFuncNode->pParameterList, j);
      QUERY_CHECK_NULL(p1, code, lino, _end, terrno);
      if (p1->type == QUERY_NODE_COLUMN) {
        SColumnNode* pcn = (SColumnNode*)p1;

        pExp->base.pParam[j].type = FUNC_PARAM_TYPE_COLUMN;
        pExp->base.pParam[j].pCol =
            createColumn(pcn->dataBlockId, pcn->slotId, pcn->colId, &pcn->node.resType, pcn->colType);
        QUERY_CHECK_NULL(pExp->base.pParam[j].pCol, code, lino, _end, terrno);
      } else if (p1->type == QUERY_NODE_VALUE) {
        SValueNode* pvn = (SValueNode*)p1;
        pExp->base.pParam[j].type = FUNC_PARAM_TYPE_VALUE;
        code = nodesValueNodeToVariant(pvn, &pExp->base.pParam[j].param);
        QUERY_CHECK_CODE(code, lino, _end);
      } else if (p1->type == QUERY_NODE_REMOTE_VALUE) {
        SRemoteValueNode* pRemote = (SRemoteValueNode*)p1;
        code = qFetchRemoteNode(gTaskScalarExtra.pSubJobCtx, pRemote->subQIdx, p1);
        QUERY_CHECK_CODE(code, lino, _end);

        SValueNode* pvn = (SValueNode*)pRemote;
        pExp->base.pParam[j].type = FUNC_PARAM_TYPE_VALUE;
        code = nodesValueNodeToVariant(pvn, &pExp->base.pParam[j].param);
        QUERY_CHECK_CODE(code, lino, _end);
      }
    }
    pExp->pExpr->_function.bindExprID = ((SExprNode*)pNode)->bindExprID;
  } else if (type == QUERY_NODE_OPERATOR) {
    pExp->pExpr->nodeType = QUERY_NODE_OPERATOR;
    SOperatorNode* pOpNode = (SOperatorNode*)pNode;

    pExp->base.pParam = taosMemoryCalloc(1, sizeof(SFunctParam));
    QUERY_CHECK_NULL(pExp->base.pParam, code, lino, _end, terrno);
    pExp->base.numOfParams = 1;

    SDataType* pType = &pOpNode->node.resType;
    pExp->base.resSchema =
        createResSchema(pType->type, pType->bytes, slotId, pType->scale, pType->precision, pOpNode->node.aliasName);
    pExp->pExpr->_optrRoot.pRootNode = pNode;
  } else if (type == QUERY_NODE_CASE_WHEN) {
    pExp->pExpr->nodeType = QUERY_NODE_OPERATOR;
    SCaseWhenNode* pCaseNode = (SCaseWhenNode*)pNode;

    pExp->base.pParam = taosMemoryCalloc(1, sizeof(SFunctParam));
    QUERY_CHECK_NULL(pExp->base.pParam, code, lino, _end, terrno);
    pExp->base.numOfParams = 1;

    SDataType* pType = &pCaseNode->node.resType;
    pExp->base.resSchema =
        createResSchema(pType->type, pType->bytes, slotId, pType->scale, pType->precision, pCaseNode->node.aliasName);
    pExp->pExpr->_optrRoot.pRootNode = pNode;
  } else if (type == QUERY_NODE_LOGIC_CONDITION) {
    pExp->pExpr->nodeType = QUERY_NODE_OPERATOR;
    SLogicConditionNode* pCond = (SLogicConditionNode*)pNode;
    pExp->base.pParam = taosMemoryCalloc(1, sizeof(SFunctParam));
    QUERY_CHECK_NULL(pExp->base.pParam, code, lino, _end, terrno);
    pExp->base.numOfParams = 1;
    SDataType* pType = &pCond->node.resType;
    pExp->base.resSchema =
        createResSchema(pType->type, pType->bytes, slotId, pType->scale, pType->precision, pCond->node.aliasName);
    pExp->pExpr->_optrRoot.pRootNode = pNode;
  } else {
    code = TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
    QUERY_CHECK_CODE(code, lino, _end);
  }
  pExp->pExpr->relatedTo = ((SExprNode*)pNode)->relatedTo;
_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  return code;
}

int32_t createExprFromTargetNode(SExprInfo* pExp, STargetNode* pTargetNode) {
  return createExprFromOneNode(pExp, pTargetNode->pExpr, pTargetNode->slotId);
}

SExprInfo* createExpr(SNodeList* pNodeList, int32_t* numOfExprs) {
  *numOfExprs = LIST_LENGTH(pNodeList);
  SExprInfo* pExprs = taosMemoryCalloc(*numOfExprs, sizeof(SExprInfo));
  if (!pExprs) {
    return NULL;
  }

  for (int32_t i = 0; i < (*numOfExprs); ++i) {
    SExprInfo* pExp = &pExprs[i];
    int32_t    code = createExprFromOneNode(pExp, nodesListGetNode(pNodeList, i), i + UD_TAG_COLUMN_INDEX);
    if (code != TSDB_CODE_SUCCESS) {
      taosMemoryFreeClear(pExprs);
      terrno = code;
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
      return NULL;
    }
  }

  return pExprs;
}

int32_t createExprInfo(SNodeList* pNodeList, SNodeList* pGroupKeys, SExprInfo** pExprInfo, int32_t* numOfExprs) {
  QRY_PARAM_CHECK(pExprInfo);

  int32_t code = 0;
  int32_t lino = 0;
  int32_t numOfFuncs = LIST_LENGTH(pNodeList);
  int32_t numOfGroupKeys = 0;
  if (pGroupKeys != NULL) {
    numOfGroupKeys = LIST_LENGTH(pGroupKeys);
  }

  *numOfExprs = numOfFuncs + numOfGroupKeys;
  if (*numOfExprs == 0) {
    return code;
  }

  SExprInfo* pExprs = taosMemoryCalloc(*numOfExprs, sizeof(SExprInfo));
  QUERY_CHECK_NULL(pExprs, code, lino, _return, terrno);

  int32_t i = 0;
  if (pNodeList != NULL) {
    SNode* node = NULL;
    FOREACH(node, pNodeList) {
      STargetNode* pTargetNode = (STargetNode*)node;
      SExprInfo*   pExp = &pExprs[i++];
      code = createExprFromTargetNode(pExp, pTargetNode);
      QUERY_CHECK_CODE(code, lino, _return);
    }
  }

  if (pGroupKeys != NULL) {
    SNode* node = NULL;
    FOREACH(node, pGroupKeys) {
      STargetNode* pTargetNode = (STargetNode*)node;
      SExprInfo*   pExp = &pExprs[i++];
      code = createExprFromTargetNode(pExp, pTargetNode);
      QUERY_CHECK_CODE(code, lino, _return);
    }
  }

  *pExprInfo = pExprs;
  return code;

_return:
  qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
  destroyExprInfo(pExprs, *numOfExprs);
  taosMemoryFreeClear(pExprs);
  return code;
}

static void deleteSubsidiareCtx(void* pData) {
  SSubsidiaryResInfo* pCtx = (SSubsidiaryResInfo*)pData;
  if (pCtx->pCtx) {
    taosMemoryFreeClear(pCtx->pCtx);
  }
}

// set the output buffer for the selectivity + tag query
static int32_t setSelectValueColumnInfo(SqlFunctionCtx* pCtx, int32_t numOfOutput) {
  int32_t num = 0;
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;

  SArray* pValCtxArray = NULL;
  for (int32_t i = numOfOutput - 1; i > 0; --i) {  // select Func is at the end of the list
    int32_t funcIdx = pCtx[i].pExpr->pExpr->_function.bindExprID;
    if (funcIdx > 0) {
      if (pValCtxArray == NULL) {
        // the end of the list is the select function of biggest index
        pValCtxArray = taosArrayInit_s(sizeof(SSubsidiaryResInfo*), funcIdx);
        if (pValCtxArray == NULL) {
          return terrno;
        }
      }
      if (funcIdx > pValCtxArray->size) {
        qError("funcIdx:%d is out of range", funcIdx);
        taosArrayDestroyP(pValCtxArray, deleteSubsidiareCtx);
        return TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
      }
      SSubsidiaryResInfo* pSubsidiary = &pCtx[i].subsidiaries;
      pSubsidiary->pCtx = taosMemoryCalloc(numOfOutput, POINTER_BYTES);
      if (pSubsidiary->pCtx == NULL) {
        taosArrayDestroyP(pValCtxArray, deleteSubsidiareCtx);
        return terrno;
      }
      pSubsidiary->num = 0;
      taosArraySet(pValCtxArray, funcIdx - 1, &pSubsidiary);
    }
  }

  SqlFunctionCtx*  p = NULL;
  SqlFunctionCtx** pValCtx = NULL;
  if (pValCtxArray == NULL) {
    pValCtx = taosMemoryCalloc(numOfOutput, POINTER_BYTES);
    if (pValCtx == NULL) {
      QUERY_CHECK_CODE(terrno, lino, _end);
    }
  }

  for (int32_t i = 0; i < numOfOutput; ++i) {
    const char* pName = pCtx[i].pExpr->pExpr->_function.functionName;
    if ((strcmp(pName, "_select_value") == 0)) {
      if (pValCtxArray == NULL) {
        pValCtx[num++] = &pCtx[i];
      } else {
        int32_t bindFuncIndex = pCtx[i].pExpr->pExpr->relatedTo;  // start from index 1;
        if (bindFuncIndex > 0) {                                  // 0 is default index related to the select function
          bindFuncIndex -= 1;
        }
        SSubsidiaryResInfo** pSubsidiary = taosArrayGet(pValCtxArray, bindFuncIndex);
        if (pSubsidiary == NULL) {
          QUERY_CHECK_CODE(TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR, lino, _end);
        }
        (*pSubsidiary)->pCtx[(*pSubsidiary)->num] = &pCtx[i];
        (*pSubsidiary)->num++;
      }
    } else if (fmIsSelectFunc(pCtx[i].functionId)) {
      if (pValCtxArray == NULL) {
        p = &pCtx[i];
      }
    }
  }

  if (p != NULL) {
    p->subsidiaries.pCtx = pValCtx;
    p->subsidiaries.num = num;
  } else {
    taosMemoryFreeClear(pValCtx);
  }

_end:
  if (code != TSDB_CODE_SUCCESS) {
    taosArrayDestroyP(pValCtxArray, deleteSubsidiareCtx);
    taosMemoryFreeClear(pValCtx);
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  } else {
    taosArrayDestroy(pValCtxArray);
  }
  return code;
}

SqlFunctionCtx* createSqlFunctionCtx(SExprInfo* pExprInfo, int32_t numOfOutput, int32_t** rowEntryInfoOffset,
                                     SFunctionStateStore* pStore) {
  int32_t         code = TSDB_CODE_SUCCESS;
  int32_t         lino = 0;
  SqlFunctionCtx* pFuncCtx = (SqlFunctionCtx*)taosMemoryCalloc(numOfOutput, sizeof(SqlFunctionCtx));
  if (pFuncCtx == NULL) {
    return NULL;
  }

  *rowEntryInfoOffset = taosMemoryCalloc(numOfOutput, sizeof(int32_t));
  if (*rowEntryInfoOffset == 0) {
    taosMemoryFreeClear(pFuncCtx);
    return NULL;
  }

  for (int32_t i = 0; i < numOfOutput; ++i) {
    SExprInfo* pExpr = &pExprInfo[i];

    SExprBasicInfo* pFunct = &pExpr->base;
    SqlFunctionCtx* pCtx = &pFuncCtx[i];

    pCtx->functionId = -1;
    pCtx->pExpr = pExpr;

    if (pExpr->pExpr->nodeType == QUERY_NODE_FUNCTION) {
      SFuncExecEnv env = {0};
      pCtx->functionId = pExpr->pExpr->_function.pFunctNode->funcId;
      pCtx->isPseudoFunc = fmIsWindowPseudoColumnFunc(pCtx->functionId) || fmIsPlaceHolderFunc(pCtx->functionId);
      pCtx->isNotNullFunc = fmIsNotNullOutputFunc(pCtx->functionId);

      bool isUdaf = fmIsUserDefinedFunc(pCtx->functionId);
      if (fmIsAggFunc(pCtx->functionId) || fmIsIndefiniteRowsFunc(pCtx->functionId)) {
        if (!isUdaf) {
          code = fmGetFuncExecFuncs(pCtx->functionId, &pCtx->fpSet);
          QUERY_CHECK_CODE(code, lino, _end);
        } else {
          char* udfName = pExpr->pExpr->_function.pFunctNode->functionName;
          pCtx->udfName = taosStrdup(udfName);
          QUERY_CHECK_NULL(pCtx->udfName, code, lino, _end, terrno);

          code = fmGetUdafExecFuncs(pCtx->functionId, &pCtx->fpSet);
          QUERY_CHECK_CODE(code, lino, _end);
        }
        bool tmp = pCtx->fpSet.getEnv(pExpr->pExpr->_function.pFunctNode, &env);
        if (!tmp) {
          code = terrno;
          QUERY_CHECK_CODE(code, lino, _end);
        }
      } else {
        if (fmIsPlaceHolderFunc(pCtx->functionId)) {
          code = fmGetStreamPesudoFuncEnv(pCtx->functionId, pExpr->base.pParamList, &env);
          QUERY_CHECK_CODE(code, lino, _end);
        }      
        
        code = fmGetScalarFuncExecFuncs(pCtx->functionId, &pCtx->sfp);
        if (code != TSDB_CODE_SUCCESS && isUdaf) {
          code = TSDB_CODE_SUCCESS;
        }
        QUERY_CHECK_CODE(code, lino, _end);

        if (pCtx->sfp.getEnv != NULL) {
          bool tmp = pCtx->sfp.getEnv(pExpr->pExpr->_function.pFunctNode, &env);
          if (!tmp) {
            code = terrno;
            QUERY_CHECK_CODE(code, lino, _end);
          }
        }
      }
      pCtx->resDataInfo.interBufSize = env.calcMemSize;
    } else if (pExpr->pExpr->nodeType == QUERY_NODE_COLUMN || pExpr->pExpr->nodeType == QUERY_NODE_OPERATOR ||
               pExpr->pExpr->nodeType == QUERY_NODE_VALUE) {
      // for simple column, the result buffer needs to hold at least one element.
      pCtx->resDataInfo.interBufSize = pFunct->resSchema.bytes;
    }

    pCtx->input.numOfInputCols = pFunct->numOfParams;
    pCtx->input.pData = taosMemoryCalloc(pFunct->numOfParams, POINTER_BYTES);
    QUERY_CHECK_NULL(pCtx->input.pData, code, lino, _end, terrno);
    pCtx->input.pColumnDataAgg = taosMemoryCalloc(pFunct->numOfParams, POINTER_BYTES);
    QUERY_CHECK_NULL(pCtx->input.pColumnDataAgg, code, lino, _end, terrno);

    pCtx->pTsOutput = NULL;
    pCtx->resDataInfo.bytes = pFunct->resSchema.bytes;
    pCtx->resDataInfo.type = pFunct->resSchema.type;
    pCtx->order = TSDB_ORDER_ASC;
    pCtx->start.key = INT64_MIN;
    pCtx->end.key = INT64_MIN;
    pCtx->numOfParams = pExpr->base.numOfParams;
    pCtx->param = pFunct->pParam;
    pCtx->saveHandle.currentPage = -1;
    pCtx->pStore = pStore;
    pCtx->hasWindowOrGroup = false;
    pCtx->needCleanup = false;
    pCtx->skipDynDataCheck = false;
  }

  for (int32_t i = 1; i < numOfOutput; ++i) {
    (*rowEntryInfoOffset)[i] = (int32_t)((*rowEntryInfoOffset)[i - 1] + sizeof(SResultRowEntryInfo) +
                                         pFuncCtx[i - 1].resDataInfo.interBufSize);
  }

  code = setSelectValueColumnInfo(pFuncCtx, numOfOutput);
  QUERY_CHECK_CODE(code, lino, _end);

_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
    for (int32_t i = 0; i < numOfOutput; ++i) {
      taosMemoryFree(pFuncCtx[i].input.pData);
      taosMemoryFree(pFuncCtx[i].input.pColumnDataAgg);
    }
    taosMemoryFreeClear(*rowEntryInfoOffset);
    taosMemoryFreeClear(pFuncCtx);

    terrno = code;
    return NULL;
  }
  return pFuncCtx;
}

// NOTE: sources columns are more than the destination SSDatablock columns.
// doFilter in table scan needs every column even its output is false
int32_t relocateColumnData(SSDataBlock* pBlock, const SArray* pColMatchInfo, SArray* pCols, bool outputEveryColumn) {
  int32_t code = TSDB_CODE_SUCCESS;
  size_t  numOfSrcCols = taosArrayGetSize(pCols);

  int32_t i = 0, j = 0;
  while (i < numOfSrcCols && j < taosArrayGetSize(pColMatchInfo)) {
    SColumnInfoData* p = taosArrayGet(pCols, i);
    if (!p) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
      return terrno;
    }
    SColMatchItem* pmInfo = taosArrayGet(pColMatchInfo, j);
    if (!pmInfo) {
      return terrno;
    }

    if (p->info.colId == pmInfo->colId) {
      SColumnInfoData* pDst = taosArrayGet(pBlock->pDataBlock, pmInfo->dstSlotId);
      if (!pDst) {
        return terrno;
      }
      code = colDataAssign(pDst, p, pBlock->info.rows, &pBlock->info);
      if (code != TSDB_CODE_SUCCESS) {
        qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
        return code;
      }
      i++;
      j++;
    } else if (p->info.colId < pmInfo->colId) {
      i++;
    } else {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR));
      return TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
    }
  }
  return code;
}

SInterval extractIntervalInfo(const STableScanPhysiNode* pTableScanNode) {
  SInterval interval = {
      .interval = pTableScanNode->interval,
      .sliding = pTableScanNode->sliding,
      .intervalUnit = pTableScanNode->intervalUnit,
      .slidingUnit = pTableScanNode->slidingUnit,
      .offset = pTableScanNode->offset,
      .precision = pTableScanNode->scan.node.pOutputDataBlockDesc->precision,
      .timeRange = pTableScanNode->scanRange,
  };
  calcIntervalAutoOffset(&interval);

  return interval;
}

SColumn extractColumnFromColumnNode(SColumnNode* pColNode) {
  SColumn c = {0};

  c.slotId = pColNode->slotId;
  c.colId = pColNode->colId;
  c.type = pColNode->node.resType.type;
  c.bytes = pColNode->node.resType.bytes;
  c.scale = pColNode->node.resType.scale;
  c.precision = pColNode->node.resType.precision;
  return c;
}


/**
 * @brief Determine the actual time range for reading data based on the RANGE clause and the WHERE conditions.
 * @param[in] cond The range specified by WHERE condition.
 * @param[in] range The range specified by RANGE clause.
 * @param[out] twindow The range to be read in DESC order, and only one record is needed.
 * @param[out] extTwindow The external range to read for only one record, which is used for FILL clause.
 * @note `cond` and `twindow` may be the same address.
 */
static int32_t getQueryExtWindow(const STimeWindow* cond, const STimeWindow* range, STimeWindow* twindow,
                                 STimeWindow* extTwindows) {
  int32_t     code = TSDB_CODE_SUCCESS;
  int32_t     lino = 0;
  STimeWindow tempWindow;

  if (cond->skey > cond->ekey || range->skey > range->ekey) {
    *twindow = extTwindows[0] = extTwindows[1] = TSWINDOW_DESC_INITIALIZER;
    return code;
  }

  if (range->ekey < cond->skey) {
    extTwindows[1] = *cond;
    *twindow = extTwindows[0] = TSWINDOW_DESC_INITIALIZER;
    return code;
  }

  if (cond->ekey < range->skey) {
    extTwindows[0] = *cond;
    *twindow = extTwindows[1] = TSWINDOW_DESC_INITIALIZER;
    return code;
  }

  // Only scan data in the time range intersecion.
  extTwindows[0] = extTwindows[1] = *cond;
  twindow->skey = TMAX(cond->skey, range->skey);
  twindow->ekey = TMIN(cond->ekey, range->ekey);
  extTwindows[0].ekey = twindow->skey - 1;
  extTwindows[1].skey = twindow->ekey + 1;

  return code;
}

static int32_t getPrimaryTimeRange(SNode** pPrimaryKeyCond, STimeWindow* pTimeRange, bool* isStrict) {
  SNode*  pNew = NULL;
  int32_t code = scalarCalculateRemoteConstants(*pPrimaryKeyCond, &pNew);
  if (TSDB_CODE_SUCCESS == code) {
    *pPrimaryKeyCond = pNew;
    if (nodeType(pNew) != QUERY_NODE_VALUE) {
      code = filterGetTimeRange(*pPrimaryKeyCond, pTimeRange, isStrict, NULL);
    }
  }
  return code;
}

int32_t initQueryTableDataCond(SQueryTableDataCond* pCond, STableScanPhysiNode* pTableScanNode,
                               const SReadHandle* readHandle, bool applyExtWin) {
  int32_t code = 0;                             
  pCond->order = pTableScanNode->scanSeq[0] > 0 ? TSDB_ORDER_ASC : TSDB_ORDER_DESC;
  pCond->numOfCols = LIST_LENGTH(pTableScanNode->scan.pScanCols);

  pCond->colList = taosMemoryCalloc(pCond->numOfCols, sizeof(SColumnInfo));
  if (!pCond->colList) {
    return terrno;
  }
  pCond->pSlotList = taosMemoryMalloc(sizeof(int32_t) * pCond->numOfCols);
  if (pCond->pSlotList == NULL) {
    taosMemoryFreeClear(pCond->colList);
    return terrno;
  }

  // TODO: get it from stable scan node
  pCond->twindows = pTableScanNode->scanRange;
  pCond->suid = pTableScanNode->scan.suid;
  pCond->type = TIMEWINDOW_RANGE_CONTAINED;
  pCond->startVersion = -1;
  pCond->endVersion = -1;
  pCond->skipRollup = readHandle->skipRollup;
  if (readHandle->winRangeValid) {
    pCond->twindows = readHandle->winRange;
  }
  pCond->cacheSttStatis = readHandle->cacheSttStatis;
  // allowed read stt file optimization mode
  pCond->notLoadData = (pTableScanNode->dataRequired == FUNC_DATA_REQUIRED_NOT_LOAD) &&
                       (pTableScanNode->scan.node.pConditions == NULL) && (pTableScanNode->interval == 0);

  int32_t j = 0;
  SNode*  node = NULL;
  FOREACH(node, pTableScanNode->scan.pScanCols) {
    STargetNode* pNode = (STargetNode*)node;
    if (!pNode) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
      return terrno;
    }
    SColumnNode* pColNode = (SColumnNode*)pNode->pExpr;
    if (pColNode->colType == COLUMN_TYPE_TAG) {
      continue;
    }

    pCond->colList[j].type = pColNode->node.resType.type;
    pCond->colList[j].bytes = pColNode->node.resType.bytes;
    pCond->colList[j].colId = pColNode->colId;
    pCond->colList[j].pk = pColNode->isPk;

    pCond->pSlotList[j] = pNode->slotId;
    j += 1;
  }

  pCond->numOfCols = j;

  if (applyExtWin) {
    if (NULL != pTableScanNode->pExtScanRange) {
      pCond->type = TIMEWINDOW_RANGE_EXTERNAL;
      code = getQueryExtWindow(&pCond->twindows, pTableScanNode->pExtScanRange, &pCond->twindows, pCond->extTwindows);
    } else if (readHandle->extWinRangeValid) {
      pCond->type = TIMEWINDOW_RANGE_EXTERNAL;
      code = getQueryExtWindow(&pCond->twindows, &readHandle->extWinRange, &pCond->twindows, pCond->extTwindows);
    }
  }

  if (pTableScanNode->pPrimaryCond) {
    bool isStrict = false;
    code = getPrimaryTimeRange((SNode**)&pTableScanNode->pPrimaryCond, &pCond->twindows, &isStrict);
    if (code || !isStrict) {
      code = nodesMergeNode((SNode**)&pTableScanNode->scan.node.pConditions, &pTableScanNode->pPrimaryCond);
    }
  }

  return code;
}

int32_t initQueryTableDataCondWithColArray(SQueryTableDataCond* pCond, SQueryTableDataCond* pOrgCond,
                                           const SReadHandle* readHandle, SArray* colArray) {
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;

  pCond->order = TSDB_ORDER_ASC;
  pCond->numOfCols = (int32_t)taosArrayGetSize(colArray);

  pCond->colList = taosMemoryCalloc(pCond->numOfCols, sizeof(SColumnInfo));
  QUERY_CHECK_NULL(pCond->colList, code, lino, _return, terrno);

  pCond->pSlotList = taosMemoryMalloc(sizeof(int32_t) * pCond->numOfCols);
  QUERY_CHECK_NULL(pCond->pSlotList, code, lino, _return, terrno);

  pCond->twindows = pOrgCond->twindows;
  pCond->order = pOrgCond->order;
  pCond->type = pOrgCond->type;
  pCond->startVersion = -1;
  pCond->endVersion = -1;
  pCond->skipRollup = true;
  pCond->notLoadData = false;

  for (int32_t i = 0; i < pCond->numOfCols; ++i) {
    SColIdPair* pColPair = taosArrayGet(colArray, i);
    QUERY_CHECK_NULL(pColPair, code, lino, _return, terrno);

    bool find = false;
    for (int32_t j = 0; j < pOrgCond->numOfCols; ++j) {
      if (pOrgCond->colList[j].colId == pColPair->vtbColId) {
        pCond->colList[i].type = pOrgCond->colList[j].type;
        pCond->colList[i].bytes = pOrgCond->colList[j].bytes;
        pCond->colList[i].colId = pColPair->orgColId;
        pCond->colList[i].pk = pOrgCond->colList[j].pk;
        pCond->pSlotList[i] = i;
        find = true;
        qDebug("%s mapped vtb colId:%d to org colId:%d", __func__, pColPair->vtbColId, pColPair->orgColId);
        break;
      }
    }
    QUERY_CHECK_CONDITION(find, code, lino, _return, TSDB_CODE_NOT_FOUND);
  }

  return code;
_return:
  qError("%s failed at line %d since %s", __func__, lino, tstrerror(terrno));
  taosMemoryFreeClear(pCond->colList);
  taosMemoryFreeClear(pCond->pSlotList);
  return code;
}

void cleanupQueryTableDataCond(SQueryTableDataCond* pCond) {
  taosMemoryFreeClear(pCond->colList);
  taosMemoryFreeClear(pCond->pSlotList);
}

int32_t convertFillType(int32_t mode) {
  int32_t type = TSDB_FILL_NONE;
  switch (mode) {
    case FILL_MODE_PREV:
      type = TSDB_FILL_PREV;
      break;
    case FILL_MODE_NONE:
      type = TSDB_FILL_NONE;
      break;
    case FILL_MODE_NULL:
      type = TSDB_FILL_NULL;
      break;
    case FILL_MODE_NULL_F:
      type = TSDB_FILL_NULL_F;
      break;
    case FILL_MODE_NEXT:
      type = TSDB_FILL_NEXT;
      break;
    case FILL_MODE_VALUE:
      type = TSDB_FILL_SET_VALUE;
      break;
    case FILL_MODE_VALUE_F:
      type = TSDB_FILL_SET_VALUE_F;
      break;
    case FILL_MODE_LINEAR:
      type = TSDB_FILL_LINEAR;
      break;
    case FILL_MODE_NEAR:
      type = TSDB_FILL_NEAR;
      break;
    default:
      type = TSDB_FILL_NONE;
  }

  return type;
}

void getInitialStartTimeWindow(SInterval* pInterval, TSKEY ts, STimeWindow* w, bool ascQuery) {
  if (ascQuery) {
    *w = getAlignQueryTimeWindow(pInterval, ts);
  } else {
    // the start position of the first time window in the endpoint that spreads beyond the queried last timestamp
    *w = getAlignQueryTimeWindow(pInterval, ts);

    int64_t key = w->skey;
    while (key < ts) {  // moving towards end
      key = getNextTimeWindowStart(pInterval, key, TSDB_ORDER_ASC);
      if (key > ts) {
        break;
      }

      w->skey = key;
    }
    w->ekey = taosTimeAdd(w->skey, pInterval->interval, pInterval->intervalUnit, pInterval->precision, NULL) - 1;
  }
}

static STimeWindow doCalculateTimeWindow(int64_t ts, SInterval* pInterval) {
  STimeWindow w = {0};

  w.skey = taosTimeTruncate(ts, pInterval);
  w.ekey = taosTimeGetIntervalEnd(w.skey, pInterval);
  return w;
}

STimeWindow getFirstQualifiedTimeWindow(int64_t ts, STimeWindow* pWindow, SInterval* pInterval, int32_t order) {
  STimeWindow win = *pWindow;
  STimeWindow save = win;
  while (win.skey <= ts && win.ekey >= ts) {
    save = win;
    // get previous time window
    getNextTimeWindow(pInterval, &win, order == TSDB_ORDER_DESC ? TSDB_ORDER_ASC : TSDB_ORDER_DESC);
  }

  return save;
}

// get the correct time window according to the handled timestamp
// todo refactor
STimeWindow getActiveTimeWindow(SDiskbasedBuf* pBuf, SResultRowInfo* pResultRowInfo, int64_t ts, SInterval* pInterval,
                                int32_t order) {
  STimeWindow w = {0};
  if (pResultRowInfo->cur.pageId == -1) {  // the first window, from the previous stored value
    getInitialStartTimeWindow(pInterval, ts, &w, (order != TSDB_ORDER_DESC));
    return w;
  }

  SResultRow* pRow = getResultRowByPos(pBuf, &pResultRowInfo->cur, false);
  if (pRow) {
    TAOS_SET_OBJ_ALIGNED(&w, pRow->win);
  }

  // in case of typical time window, we can calculate time window directly.
  if (w.skey > ts || w.ekey < ts) {
    w = doCalculateTimeWindow(ts, pInterval);
  }

  if (pInterval->interval != pInterval->sliding) {
    // it is an sliding window query, in which sliding value is not equalled to
    // interval value, and we need to find the first qualified time window.
    w = getFirstQualifiedTimeWindow(ts, &w, pInterval, order);
  }

  return w;
}

void getNextTimeWindow(const SInterval* pInterval, STimeWindow* tw, int32_t order) {
  tw->skey = getNextTimeWindowStart(pInterval, tw->skey, order);
  tw->ekey = taosTimeGetIntervalEnd(tw->skey, pInterval);
}

bool hasLimitOffsetInfo(SLimitInfo* pLimitInfo) {
  return (pLimitInfo->limit.limit != -1 || pLimitInfo->limit.offset != -1 || pLimitInfo->slimit.limit != -1 ||
          pLimitInfo->slimit.offset != -1);
}

bool hasSlimitOffsetInfo(SLimitInfo* pLimitInfo) {
  return (pLimitInfo->slimit.limit != -1 || pLimitInfo->slimit.offset != -1);
}

void initLimitInfo(const SNode* pLimit, const SNode* pSLimit, SLimitInfo* pLimitInfo) {
  SLimit limit = {.limit = getLimit(pLimit), .offset = getOffset(pLimit)};
  SLimit slimit = {.limit = getLimit(pSLimit), .offset = getOffset(pSLimit)};

  pLimitInfo->limit = limit;
  pLimitInfo->slimit = slimit;
  pLimitInfo->remainOffset = limit.offset;
  pLimitInfo->remainGroupOffset = slimit.offset;
  pLimitInfo->numOfOutputRows = 0;
  pLimitInfo->numOfOutputGroups = 0;
  pLimitInfo->currentGroupId = 0;
}

void resetLimitInfoForNextGroup(SLimitInfo* pLimitInfo) {
  pLimitInfo->numOfOutputRows = 0;
  pLimitInfo->remainOffset = pLimitInfo->limit.offset;
}

int32_t tableListGetSize(const STableListInfo* pTableList, int32_t* pRes) {
  if (taosArrayGetSize(pTableList->pTableList) != taosHashGetSize(pTableList->map)) {
    qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR));
    return TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
  }
  (*pRes) = taosArrayGetSize(pTableList->pTableList);
  return TSDB_CODE_SUCCESS;
}

uint64_t tableListGetSuid(const STableListInfo* pTableList) { return pTableList->idInfo.suid; }

STableKeyInfo* tableListGetInfo(const STableListInfo* pTableList, int32_t index) {
  if (taosArrayGetSize(pTableList->pTableList) == 0) {
    return NULL;
  }

  return taosArrayGet(pTableList->pTableList, index);
}

int32_t tableListFind(const STableListInfo* pTableList, uint64_t uid, int32_t startIndex) {
  int32_t numOfTables = taosArrayGetSize(pTableList->pTableList);
  if (startIndex >= numOfTables) {
    return -1;
  }

  for (int32_t i = startIndex; i < numOfTables; ++i) {
    STableKeyInfo* p = taosArrayGet(pTableList->pTableList, i);
    if (!p) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
      return -1;
    }
    if (p->uid == uid) {
      return i;
    }
  }
  return -1;
}

void tableListGetSourceTableInfo(const STableListInfo* pTableList, uint64_t* psuid, uint64_t* uid, int32_t* type) {
  *psuid = pTableList->idInfo.suid;
  *uid = pTableList->idInfo.uid;
  *type = pTableList->idInfo.tableType;
}

uint64_t tableListGetTableGroupId(const STableListInfo* pTableList, uint64_t tableUid) {
  int32_t* slot = taosHashGet(pTableList->map, &tableUid, sizeof(tableUid));
  if (slot == NULL) {
    qDebug("table:%" PRIu64 " not found in table list", tableUid);
    return -1;
  }

  STableKeyInfo* pKeyInfo = taosArrayGet(pTableList->pTableList, *slot);
  if (pKeyInfo == NULL) {
    qDebug("table:%" PRIu64 " not found in table list", tableUid);
    return -1;
  }
  return pKeyInfo->groupId;
}

// TODO handle the group offset info, fix it, the rule of group output will be broken by this function
// int32_t tableListRemoveTableInfo(STableListInfo* pTableList, uint64_t uid) {
//   int32_t code = TSDB_CODE_SUCCESS;
//   int32_t lino = 0;

//   int32_t* slot = taosHashGet(pTableList->map, &uid, sizeof(uid));
//   if (slot == NULL) {
//     qDebug("table:%" PRIu64 " not found in table list", uid);
//     return 0;
//   }

//   taosArrayRemove(pTableList->pTableList, *slot);
//   code = taosHashRemove(pTableList->map, &uid, sizeof(uid));

//   _end:
//   if (code != TSDB_CODE_SUCCESS) {
//     qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
//   } else {
//     qDebug("uid:%" PRIu64 ", remove from table list", uid);
//   }

//   return code;
// }

int32_t tableListAddTableInfo(STableListInfo* pTableList, uint64_t uid, uint64_t gid) {
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;
  if (pTableList->map == NULL) {
    pTableList->map = taosHashInit(32, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_ENTRY_LOCK);
    QUERY_CHECK_NULL(pTableList->map, code, lino, _end, terrno);
  }

  STableKeyInfo keyInfo = {.uid = uid, .groupId = gid};
  void*         p = taosHashGet(pTableList->map, &uid, sizeof(uid));
  if (p != NULL) {
    qInfo("table:%" PRId64 " already in tableIdList, ignore it", uid);
    goto _end;
  }

  void* tmp = taosArrayPush(pTableList->pTableList, &keyInfo);
  QUERY_CHECK_NULL(tmp, code, lino, _end, terrno);

  int32_t slot = (int32_t)taosArrayGetSize(pTableList->pTableList) - 1;
  code = taosHashPut(pTableList->map, &uid, sizeof(uid), &slot, sizeof(slot));
  if (code != TSDB_CODE_SUCCESS) {
    // we have checked the existence of uid in hash map above
    QUERY_CHECK_CONDITION((code != TSDB_CODE_DUP_KEY), code, lino, _end, TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR);
    taosArrayPopTailBatch(pTableList->pTableList, 1);  // let's pop the last element in the array list
  }

_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  } else {
    qDebug("uid:%" PRIu64 ", groupId:%" PRIu64 " added into table list, slot:%d, total:%d", uid, gid, slot, slot + 1);
  }

  return code;
}

int32_t tableListGetGroupList(const STableListInfo* pTableList, int32_t ordinalGroupIndex, STableKeyInfo** pKeyInfo,
                              int32_t* size) {
  int32_t totalGroups = tableListGetOutputGroups(pTableList);
  int32_t numOfTables = 0;
  int32_t code = tableListGetSize(pTableList, &numOfTables);
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
    return code;
  }

  if (ordinalGroupIndex < 0 || ordinalGroupIndex >= totalGroups) {
    return TSDB_CODE_INVALID_PARA;
  }

  // here handle two special cases:
  // 1. only one group exists, and 2. one table exists for each group.
  if (totalGroups == 1) {
    *size = numOfTables;
    *pKeyInfo = (*size == 0) ? NULL : taosArrayGet(pTableList->pTableList, 0);
    return TSDB_CODE_SUCCESS;
  } else if (totalGroups == numOfTables) {
    *size = 1;
    *pKeyInfo = taosArrayGet(pTableList->pTableList, ordinalGroupIndex);
    return TSDB_CODE_SUCCESS;
  }

  int32_t offset = pTableList->groupOffset[ordinalGroupIndex];
  if (ordinalGroupIndex < totalGroups - 1) {
    *size = pTableList->groupOffset[ordinalGroupIndex + 1] - offset;
  } else {
    *size = numOfTables - offset;
  }

  *pKeyInfo = taosArrayGet(pTableList->pTableList, offset);
  return TSDB_CODE_SUCCESS;
}

int32_t tableListGetOutputGroups(const STableListInfo* pTableList) { return pTableList->numOfOuputGroups; }

bool oneTableForEachGroup(const STableListInfo* pTableList) { return pTableList->oneTableForEachGroup; }

STableListInfo* tableListCreate() {
  STableListInfo* pListInfo = taosMemoryCalloc(1, sizeof(STableListInfo));
  if (pListInfo == NULL) {
    return NULL;
  }

  pListInfo->remainGroups = NULL;
  pListInfo->pTableList = taosArrayInit(4, sizeof(STableKeyInfo));
  if (pListInfo->pTableList == NULL) {
    goto _error;
  }

  pListInfo->map = taosHashInit(1024, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), false, HASH_ENTRY_LOCK);
  if (pListInfo->map == NULL) {
    goto _error;
  }

  pListInfo->numOfOuputGroups = 1;
  return pListInfo;

_error:
  tableListDestroy(pListInfo);
  return NULL;
}

void tableListDestroy(STableListInfo* pTableListInfo) {
  if (pTableListInfo == NULL) {
    return;
  }

  taosArrayDestroy(pTableListInfo->pTableList);
  taosMemoryFreeClear(pTableListInfo->groupOffset);

  taosHashCleanup(pTableListInfo->map);
  taosHashCleanup(pTableListInfo->remainGroups);
  pTableListInfo->pTableList = NULL;
  pTableListInfo->map = NULL;
  taosMemoryFree(pTableListInfo);
}

void tableListClear(STableListInfo* pTableListInfo) {
  if (pTableListInfo == NULL) {
    return;
  }

  taosArrayClear(pTableListInfo->pTableList);
  taosHashClear(pTableListInfo->map);
  taosHashClear(pTableListInfo->remainGroups);
  taosMemoryFree(pTableListInfo->groupOffset);
  pTableListInfo->numOfOuputGroups = 1;
  pTableListInfo->oneTableForEachGroup = false;
}

static int32_t orderbyGroupIdComparFn(const void* p1, const void* p2) {
  STableKeyInfo* pInfo1 = (STableKeyInfo*)p1;
  STableKeyInfo* pInfo2 = (STableKeyInfo*)p2;

  if (pInfo1->groupId == pInfo2->groupId) {
    return 0;
  } else {
    return pInfo1->groupId < pInfo2->groupId ? -1 : 1;
  }
}

int32_t sortTableGroup(STableListInfo* pTableListInfo) {
  int32_t code = TSDB_CODE_SUCCESS;
  taosArraySort(pTableListInfo->pTableList, orderbyGroupIdComparFn);
  int32_t size = taosArrayGetSize(pTableListInfo->pTableList);
  if (size == 0) {
    pTableListInfo->numOfOuputGroups = 0;
    return code;
  }

  SArray* pList = taosArrayInit(4, sizeof(int32_t));
  if (!pList) {
    code = terrno;
    goto end;
  }

  STableKeyInfo* pInfo = taosArrayGet(pTableListInfo->pTableList, 0);
  if (pInfo == NULL) {
    qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
    code = terrno;
    goto end;
  }
  uint64_t gid = pInfo->groupId;

  int32_t start = 0;
  void*   tmp = taosArrayPush(pList, &start);
  if (tmp == NULL) {
    qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
    code = terrno;
    goto end;
  }

  for (int32_t i = 1; i < size; ++i) {
    pInfo = taosArrayGet(pTableListInfo->pTableList, i);
    if (pInfo == NULL) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
      code = terrno;
      goto end;
    }
    if (pInfo->groupId != gid) {
      tmp = taosArrayPush(pList, &i);
      if (tmp == NULL) {
        qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
        code = terrno;
        goto end;
      }
      gid = pInfo->groupId;
    }
  }

  pTableListInfo->numOfOuputGroups = taosArrayGetSize(pList);
  pTableListInfo->groupOffset = taosMemoryMalloc(sizeof(int32_t) * pTableListInfo->numOfOuputGroups);
  if (pTableListInfo->groupOffset == NULL) {
    code = terrno;
    goto end;
  }

  memcpy(pTableListInfo->groupOffset, taosArrayGet(pList, 0), sizeof(int32_t) * pTableListInfo->numOfOuputGroups);

end:
  taosArrayDestroy(pList);
  return code;
}

int32_t buildGroupIdMapForAllTables(STableListInfo* pTableListInfo, SReadHandle* pHandle, SScanPhysiNode* pScanNode,
                                    SNodeList* group, bool groupSort, uint8_t* digest, SStorageAPI* pAPI, SHashObj* groupIdMap) {
  int32_t code = TSDB_CODE_SUCCESS;

  bool   groupByTbname = groupbyTbname(group);
  size_t numOfTables = taosArrayGetSize(pTableListInfo->pTableList);
  if (!numOfTables) {
    return code;
  }
  qDebug("numOfTables:%zu, groupByTbname:%d, group:%p", numOfTables, groupByTbname, group);
  if (group == NULL || groupByTbname) {
    if (tsCountAlwaysReturnValue && QUERY_NODE_PHYSICAL_PLAN_TABLE_SCAN == nodeType(pScanNode) &&
        ((STableScanPhysiNode*)pScanNode)->needCountEmptyTable) {
      pTableListInfo->remainGroups =
          taosHashInit(numOfTables, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), false, HASH_NO_LOCK);
      if (pTableListInfo->remainGroups == NULL) {
        return terrno;
      }

      for (int i = 0; i < numOfTables; i++) {
        STableKeyInfo* info = taosArrayGet(pTableListInfo->pTableList, i);
        if (!info) {
          qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
          return terrno;
        }
        info->groupId = groupByTbname ? info->uid : 0;
        int32_t tempRes = taosHashPut(pTableListInfo->remainGroups, &(info->groupId), sizeof(info->groupId),
                                      &(info->uid), sizeof(info->uid));
        if (tempRes != TSDB_CODE_SUCCESS && tempRes != TSDB_CODE_DUP_KEY) {
          qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(tempRes));
          return tempRes;
        }
      }
    } else {
      for (int32_t i = 0; i < numOfTables; i++) {
        STableKeyInfo* info = taosArrayGet(pTableListInfo->pTableList, i);
        if (!info) {
          qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
          return terrno;
        }
        info->groupId = groupByTbname ? info->uid : 0;
        
      }
    }
    if (groupIdMap && group != NULL){
      getColInfoResultForGroupbyForStream(pHandle->vnode, group, pTableListInfo, pAPI, groupIdMap);
    }

    pTableListInfo->oneTableForEachGroup = groupByTbname;
    if (numOfTables == 1 && pTableListInfo->idInfo.tableType == TSDB_CHILD_TABLE) {
      pTableListInfo->oneTableForEachGroup = true;
    }

    if (groupSort && groupByTbname) {
      taosArraySort(pTableListInfo->pTableList, orderbyGroupIdComparFn);
      pTableListInfo->numOfOuputGroups = numOfTables;
    } else if (groupByTbname && pScanNode->groupOrderScan) {
      pTableListInfo->numOfOuputGroups = numOfTables;
    } else {
      pTableListInfo->numOfOuputGroups = 1;
    }
    if (groupSort || pScanNode->groupOrderScan) {
      code = sortTableGroup(pTableListInfo);
    }
  } else {
    bool initRemainGroups = false;
    if (QUERY_NODE_PHYSICAL_PLAN_TABLE_SCAN == nodeType(pScanNode)) {
      STableScanPhysiNode* pTableScanNode = (STableScanPhysiNode*)pScanNode;
      if (tsCountAlwaysReturnValue && pTableScanNode->needCountEmptyTable &&
          !(groupSort || pScanNode->groupOrderScan)) {
        initRemainGroups = true;
      }
    }

    code = getColInfoResultForGroupby(pHandle->vnode, group, pTableListInfo, digest, pAPI, initRemainGroups, groupIdMap);
    if (code != TSDB_CODE_SUCCESS) {
      return code;
    }

    if (pScanNode->groupOrderScan) pTableListInfo->numOfOuputGroups = taosArrayGetSize(pTableListInfo->pTableList);

    if (groupSort || pScanNode->groupOrderScan) {
      code = sortTableGroup(pTableListInfo);
    }
  }

  // add all table entry in the hash map
  size_t size = taosArrayGetSize(pTableListInfo->pTableList);
  for (int32_t i = 0; i < size; ++i) {
    STableKeyInfo* p = taosArrayGet(pTableListInfo->pTableList, i);
    if (!p) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(terrno));
      return terrno;
    }
    int32_t tempRes = taosHashPut(pTableListInfo->map, &p->uid, sizeof(uint64_t), &i, sizeof(int32_t));
    if (tempRes != TSDB_CODE_SUCCESS && tempRes != TSDB_CODE_DUP_KEY) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(tempRes));
      return tempRes;
    }
  }

  return code;
}

int32_t createScanTableListInfo(SScanPhysiNode* pScanNode, SNodeList* pGroupTags, bool groupSort, SReadHandle* pHandle,
                                STableListInfo* pTableListInfo, SNode* pTagCond, SNode* pTagIndexCond,
                                SExecTaskInfo* pTaskInfo, SHashObj* groupIdMap) {
  int64_t     st = taosGetTimestampUs();
  const char* idStr = GET_TASKID(pTaskInfo);

  if (pHandle == NULL) {
    qError("invalid handle, in creating operator tree, %s", idStr);
    return TSDB_CODE_INVALID_PARA;
  }

  if (pHandle->uid != 0) {
    pScanNode->uid = pHandle->uid;
    pScanNode->tableType = TSDB_CHILD_TABLE;
  }
  uint8_t digest[17] = {0};
  int32_t code = getTableList(pHandle->vnode, pScanNode, pTagCond, pTagIndexCond, pTableListInfo, digest, idStr,
                              &pTaskInfo->storageAPI, pTaskInfo->pStreamRuntimeInfo);
  if (code != TSDB_CODE_SUCCESS) {
    qError("failed to getTableList, code:%s", tstrerror(code));
    return code;
  }

  int32_t numOfTables = taosArrayGetSize(pTableListInfo->pTableList);

  int64_t st1 = taosGetTimestampUs();
  pTaskInfo->cost.extractListTime = (st1 - st) / 1000.0;
  qDebug("extract queried table list completed, %d tables, elapsed time:%.2f ms %s", numOfTables,
         pTaskInfo->cost.extractListTime, idStr);

  if (numOfTables == 0) {
    qDebug("no table qualified for query, %s", idStr);
    return TSDB_CODE_SUCCESS;
  }

  code = buildGroupIdMapForAllTables(pTableListInfo, pHandle, pScanNode, pGroupTags, groupSort, digest, &pTaskInfo->storageAPI, groupIdMap);
  if (code != TSDB_CODE_SUCCESS) {
    return code;
  }

  pTaskInfo->cost.groupIdMapTime = (taosGetTimestampUs() - st1) / 1000.0;
  qDebug("generate group id map completed, elapsed time:%.2f ms %s", pTaskInfo->cost.groupIdMapTime, idStr);

  return TSDB_CODE_SUCCESS;
}

char* getStreamOpName(uint16_t opType) {
  switch (opType) {
    case QUERY_NODE_PHYSICAL_PLAN_STREAM_SCAN:
      return "stream scan";
    case QUERY_NODE_PHYSICAL_PLAN_PROJECT:
      return "project";
    case QUERY_NODE_PHYSICAL_PLAN_EXTERNAL_WINDOW:
      return "external window";
  }
  return "error name";
}

void printDataBlock(SSDataBlock* pBlock, const char* flag, const char* taskIdStr, int64_t qId) {
  if (qDebugFlag & DEBUG_TRACE) {
    if (!pBlock) {
      qDebug("%" PRIx64 " %s %s %s: Block is Null", qId, taskIdStr, flag, __func__);
      return;
    } else if (pBlock->info.rows == 0) {
      qDebug("%" PRIx64 " %s %s %s: Block is Empty.", qId, taskIdStr, flag, __func__);
      return;
    }
    
    char*   pBuf = NULL;
    int32_t code = dumpBlockData(pBlock, flag, &pBuf, taskIdStr, qId);
    if (code == 0) {
      qDebugL("%" PRIx64 " %s %s", qId, __func__, pBuf);
      taosMemoryFree(pBuf);
    }
  }
}

void printSpecDataBlock(SSDataBlock* pBlock, const char* flag, const char* opStr, const char* taskIdStr) {
  if (!pBlock) {
    qDebug("%s===stream===%s %s: Block is Null", taskIdStr, flag, opStr);
    return;
  } else if (pBlock->info.rows == 0) {
    qDebug("%s===stream===%s %s: Block is Empty.skey:%" PRId64 ",ekey:%" PRId64 ",version%" PRId64,
           taskIdStr, flag, opStr, pBlock->info.window.skey, pBlock->info.window.ekey,
           pBlock->info.version);
    return;
  }
  if (qDebugFlag & DEBUG_TRACE) {
    char* pBuf = NULL;
    char  flagBuf[64];
    snprintf(flagBuf, sizeof(flagBuf), "%s %s", flag, opStr);
    int32_t code = dumpBlockData(pBlock, flagBuf, &pBuf, taskIdStr, 0);
    if (code == 0) {
      qDebug("%s", pBuf);
      taosMemoryFree(pBuf);
    }
  }
}

TSKEY getStartTsKey(STimeWindow* win, const TSKEY* tsCols) { return tsCols == NULL ? win->skey : tsCols[0]; }

void updateTimeWindowInfo(SColumnInfoData* pColData, const STimeWindow* pWin, int64_t delta) {
  int64_t* ts = (int64_t*)pColData->pData;

  int64_t duration = pWin->ekey > pWin->skey ? pWin->ekey - pWin->skey + delta : pWin->skey - pWin->ekey + delta;
  ts[2] = duration;            // set the duration
  ts[3] = pWin->skey;          // window start key
  ts[4] = pWin->ekey + delta;  // window end key
}

int32_t compKeys(const SArray* pSortGroupCols, const char* oldkeyBuf, int32_t oldKeysLen, const SSDataBlock* pBlock,
                 int32_t rowIndex) {
  SColumnDataAgg* pColAgg = NULL;
  const char*     isNull = oldkeyBuf;
  const char*     p = oldkeyBuf + sizeof(int8_t) * pSortGroupCols->size;

  for (int32_t i = 0; i < pSortGroupCols->size; ++i) {
    const SColumn*         pCol = (SColumn*)TARRAY_GET_ELEM(pSortGroupCols, i);
    const SColumnInfoData* pColInfoData = TARRAY_GET_ELEM(pBlock->pDataBlock, pCol->slotId);
    if (pBlock->pBlockAgg) pColAgg = &pBlock->pBlockAgg[pCol->slotId];

    if (colDataIsNull(pColInfoData, pBlock->info.rows, rowIndex, pColAgg)) {
      if (isNull[i] != 1) return 1;
    } else {
      if (isNull[i] != 0) return 1;
      const char* val = colDataGetData(pColInfoData, rowIndex);
      if (pCol->type == TSDB_DATA_TYPE_JSON) {
        int32_t len = getJsonValueLen(val);
        if (memcmp(p, val, len) != 0) return 1;
        p += len;
      } else if (IS_VAR_DATA_TYPE(pCol->type)) {
        if (IS_STR_DATA_BLOB(pCol->type)) {
          if (memcmp(p, val, blobDataTLen(val)) != 0) return 1;
          p += blobDataTLen(val);
        } else {
          if (memcmp(p, val, varDataTLen(val)) != 0) return 1;
          p += varDataTLen(val);
        }
      } else {
        if (0 != memcmp(p, val, pCol->bytes)) return 1;
        p += pCol->bytes;
      }
    }
  }
  if ((int32_t)(p - oldkeyBuf) != oldKeysLen) return 1;
  return 0;
}

int32_t buildKeys(char* keyBuf, const SArray* pSortGroupCols, const SSDataBlock* pBlock, int32_t rowIndex) {
  uint32_t        colNum = pSortGroupCols->size;
  SColumnDataAgg* pColAgg = NULL;
  char*           isNull = keyBuf;
  char*           p = keyBuf + sizeof(int8_t) * colNum;

  for (int32_t i = 0; i < colNum; ++i) {
    const SColumn*         pCol = (SColumn*)TARRAY_GET_ELEM(pSortGroupCols, i);
    const SColumnInfoData* pColInfoData = TARRAY_GET_ELEM(pBlock->pDataBlock, pCol->slotId);
    if (pCol->slotId > pBlock->pDataBlock->size) continue;

    if (pBlock->pBlockAgg) pColAgg = &pBlock->pBlockAgg[pCol->slotId];

    if (colDataIsNull(pColInfoData, pBlock->info.rows, rowIndex, pColAgg)) {
      isNull[i] = 1;
    } else {
      isNull[i] = 0;
      const char* val = colDataGetData(pColInfoData, rowIndex);
      if (pCol->type == TSDB_DATA_TYPE_JSON) {
        int32_t len = getJsonValueLen(val);
        memcpy(p, val, len);
        p += len;
      } else if (IS_VAR_DATA_TYPE(pCol->type)) {
        if (IS_STR_DATA_BLOB(pCol->type)) {
          blobDataCopy(p, val);
          p += blobDataTLen(val);
        } else {
          varDataCopy(p, val);
          p += varDataTLen(val);
        }
      } else {
        memcpy(p, val, pCol->bytes);
        p += pCol->bytes;
      }
    }
  }
  return (int32_t)(p - keyBuf);
}

uint64_t calcGroupId(char* pData, int32_t len) {
  T_MD5_CTX context;
  tMD5Init(&context);
  tMD5Update(&context, (uint8_t*)pData, len);
  tMD5Final(&context);

  // NOTE: only extract the initial 8 bytes of the final MD5 digest
  uint64_t id = 0;
  memcpy(&id, context.digest, sizeof(uint64_t));
  if (0 == id) memcpy(&id, context.digest + 8, sizeof(uint64_t));
  return id;
}

SNodeList* makeColsNodeArrFromSortKeys(SNodeList* pSortKeys) {
  SNode*     node;
  SNodeList* ret = NULL;
  FOREACH(node, pSortKeys) {
    SOrderByExprNode* pSortKey = (SOrderByExprNode*)node;
    int32_t           code = nodesListMakeAppend(&ret, pSortKey->pExpr);
    if (code != TSDB_CODE_SUCCESS) {
      qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
      terrno = code;
      return NULL;
    }
  }
  return ret;
}

int32_t extractKeysLen(const SArray* keys, int32_t* pLen) {
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;
  int32_t len = 0;
  int32_t keyNum = taosArrayGetSize(keys);
  for (int32_t i = 0; i < keyNum; ++i) {
    SColumn* pCol = (SColumn*)taosArrayGet(keys, i);
    QUERY_CHECK_NULL(pCol, code, lino, _end, terrno);
    len += pCol->bytes;
  }
  len += sizeof(int8_t) * keyNum;  // null flag
  *pLen = len;

_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  return code;
}

int32_t parseErrorMsgFromAnalyticServer(SJson* pJson, const char* typeStr, const char* pId) {
  int32_t code = TSDB_CODE_ANA_ANODE_RETURN_ERROR;
  char*   pMsg = NULL;
  if (pJson == NULL) {
    return code;
  }

  int32_t ret = tjsonDupStringValue(pJson, "msg", &pMsg);
  if (ret == 0 && pMsg != NULL) {
    qError("%s failed to exec %s operation, msg:%s", pId, typeStr, pMsg);
    if (strstr(pMsg, "white noise") != NULL) {
      code = TSDB_CODE_ANA_WN_DATA;
    } else if (strstr(pMsg, "white-noise") != NULL) {
      code = TSDB_CODE_ANA_WN_DATA;
    } else if (strstr(pMsg, "[Errno 111] Connection refused") != NULL) {
      code = TSDB_CODE_ANA_ALGO_NOT_LOAD;
    } else if (strstr(pMsg, "failed to load model") != NULL) {
      code = TSDB_CODE_ANA_ALGO_NOT_LOAD;
    }
  } else {
    qError("%s failed to extract msg from server, unknown error", pId);
  }

  taosMemoryFreeClear(pMsg);
  return code;
}


int32_t createExprSubQResBlock(SSDataBlock** ppBlock, SDataType* pResType) {
  int32_t code = 0;
  SSDataBlock* pBlock = taosMemoryCalloc(1, sizeof(SSDataBlock));
  if (pBlock == NULL) {
    return terrno;
  }

  pBlock->pDataBlock = taosArrayInit(1, sizeof(SColumnInfoData));
  if (pBlock->pDataBlock == NULL) {
    code = terrno;
    taosMemoryFree(pBlock);
    return code;
  }

  SColumnInfoData idata =
      createColumnInfoData(pResType->type, pResType->bytes, 0);
  idata.info.scale = pResType->scale;
  idata.info.precision = pResType->precision;

  code = blockDataAppendColInfo(pBlock, &idata);
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
    blockDataDestroy(pBlock);
    *ppBlock = NULL;
    return code;
  }

  *ppBlock = pBlock;

  return code;
}


int32_t extractSingleRspBlock(SRetrieveTableRsp* pRetrieveRsp, SSDataBlock* pb) {
  int32_t            code = TSDB_CODE_SUCCESS;
  int32_t            lino = 0;
  void*              decompBuf = NULL;

  char* pNextStart = pRetrieveRsp->data;
  char* pStart = pNextStart;

  int32_t index = 0;

  if (pRetrieveRsp->compressed) {  // decompress the data
    decompBuf = taosMemoryMalloc(pRetrieveRsp->payloadLen);
    QUERY_CHECK_NULL(decompBuf, code, lino, _end, terrno);
  }

  int32_t compLen = *(int32_t*)pStart;
  pStart += sizeof(int32_t);

  int32_t rawLen = *(int32_t*)pStart;
  pStart += sizeof(int32_t);
  QUERY_CHECK_CONDITION((compLen <= rawLen && compLen != 0), code, lino, _end, TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR);

  pNextStart = pStart + compLen;
  if (pRetrieveRsp->compressed && (compLen < rawLen)) {
    int32_t t = tsDecompressString(pStart, compLen, 1, decompBuf, rawLen, ONE_STAGE_COMP, NULL, 0);
    QUERY_CHECK_CONDITION((t == rawLen), code, lino, _end, TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR);
    pStart = decompBuf;
  }

  code = blockDecodeInternal(pb, pStart, (const char**)&pStart);
  if (code != 0) {
    taosMemoryFreeClear(pRetrieveRsp);
    goto _end;
  }

_end:
  if (code != TSDB_CODE_SUCCESS) {
    blockDataDestroy(pb);
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  return code;
}

int32_t setValueFromResBlock(STaskSubJobCtx* ctx, SValueNode* pRes, SSDataBlock* pBlock) {
  int32_t code = 0;
  bool needFree = true;
  int32_t colNum = taosArrayGetSize(pBlock->pDataBlock);
  if (NULL == pBlock->pDataBlock || 1 > colNum || pBlock->info.rows > 1) {
    qError("%s invalid scl fetch res block, pDataBlock:%p, colNum:%d, rows:%" PRId64, 
      ctx->idStr, pBlock->pDataBlock, colNum, pBlock->info.rows);
    return TSDB_CODE_PAR_INVALID_SCALAR_SUBQ_RES_ROWS;
  }
  
  pRes->flag &= (~VALUE_FLAG_VAL_UNSET);
  pRes->translate = true;
  
  SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, 0);
  if (colDataIsNull_s(pCol, 0)) {
    pRes->isNull = true;
  } else {
    code = nodesSetValueNodeValueExt(pRes, colDataGetData(pCol, 0), &needFree);
  }

  if (!needFree) {
    pCol->pData = NULL;
  }

  return code;
}

void handleRemoteValueRes(SScalarFetchParam* pParam, STaskSubJobCtx* ctx, SRetrieveTableRsp* pRsp) {
  SSDataBlock* pResBlock = NULL;

  qDebug("%s scl fetch value rsp received, subQIdx:%d, rows:%" PRId64 , ctx->idStr, pParam->subQIdx, pRsp->numOfRows);

  if (pRsp->numOfRows > 1 || pRsp->numOfBlocks > 1 || !pRsp->completed) {
    qError("%s invalid scl value fetch rsp received, subQIdx:%d, rows:%" PRId64 ", blocks:%d, completed:%d", 
      ctx->idStr, pParam->subQIdx, pRsp->numOfRows, pRsp->numOfBlocks, pRsp->completed);
    ctx->code = TSDB_CODE_PAR_INVALID_SCALAR_SUBQ_RES_ROWS;

    return;
  }

  if (1 != pRsp->numOfCols && pRsp->numOfRows > 0) {
    qError("%s invalid scl value fetch rsp received, subQIdx:%d, cols:%" PRId64, ctx->idStr, pParam->subQIdx, pRsp->numOfCols);
    ctx->code = TSDB_CODE_PAR_INVALID_SCALAR_SUBQ_RES_COLS;

    return;
  }

  SRemoteValueNode* pRemote = (SRemoteValueNode*)pParam->pRes;
  
  if (0 == pRsp->numOfRows) {
    pRemote->val.node.type = QUERY_NODE_VALUE;
    pRemote->val.isNull = true;
    pRemote->val.translate = true;
    pRemote->val.flag &= (~VALUE_FLAG_VAL_UNSET);
    taosArraySet(ctx->subResNodes, pParam->subQIdx, &pParam->pRes);

    return;
  }
  
  ctx->code = createExprSubQResBlock(&pResBlock, &((SRemoteValueNode*)pParam->pRes)->val.node.resType);
  if (TSDB_CODE_SUCCESS == ctx->code) {
    ctx->code = blockDataEnsureCapacity(pResBlock, 1);
  }
  if (TSDB_CODE_SUCCESS == ctx->code) {
    ctx->code = extractSingleRspBlock(pRsp, pResBlock);
  }
  if (TSDB_CODE_SUCCESS == ctx->code) {
    ctx->code = setValueFromResBlock(ctx, &pRemote->val, pResBlock);
  }
  if (TSDB_CODE_SUCCESS == ctx->code) {
    pRemote->val.node.type = QUERY_NODE_VALUE;
    taosArraySet(ctx->subResNodes, pParam->subQIdx, &pParam->pRes);
  }

  blockDataDestroy(pResBlock);  
}


int32_t updateValueListFromResBlock(STaskSubJobCtx* ctx, SRemoteValueListNode* pRes, SSDataBlock* pBlock) {
  int32_t code = 0, lino = 0;
  int32_t colNum = taosArrayGetSize(pBlock->pDataBlock);
  if (NULL == pBlock->pDataBlock || 1 != colNum) {
    qError("%s invalid scl fetch res block, pDataBlock:%p, colNum:%d", ctx->idStr, pBlock->pDataBlock, colNum);
    return TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
  }

  pRes->hasValue = true;
  
  SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, 0);
  TAOS_CHECK_EXIT(scalarBuildRemoteListHash(ctx->idStr, pRes, pCol, pBlock->info.rows));

_exit:

  if (code) {
    qError("%s %s failed with error: %s", ctx->idStr, __func__, tstrerror(code));
  }
  
  return code;
}



void handleRemoteValueListRes(SScalarFetchParam* pParam, STaskSubJobCtx* ctx, SRetrieveTableRsp* pRsp, bool* fetchDone) {
  SSDataBlock* pResBlock = NULL;
  SRemoteValueListNode* pRemote = (SRemoteValueListNode*)pParam->pRes;

  qDebug("%s scl fetch valueList rsp received, subQIdx:%d, rows:%" PRId64 , ctx->idStr, pParam->subQIdx, pRsp->numOfRows);

  if (pRsp->numOfRows > 0) {
    if (1 != pRsp->numOfCols) {
      qError("%s invalid scl valueList fetch rsp received, subQIdx:%d, cols:%" PRId64, ctx->idStr, pParam->subQIdx, pRsp->numOfCols);
      ctx->code = TSDB_CODE_PAR_INVALID_SCALAR_SUBQ_RES_COLS;
      *fetchDone = true;
      return;
    }

    ctx->code = createExprSubQResBlock(&pResBlock, &((SExprNode*)pParam->pRes)->resType);
    if (TSDB_CODE_SUCCESS == ctx->code) {
      ctx->code = blockDataEnsureCapacity(pResBlock, pRsp->numOfRows);
    }
    if (TSDB_CODE_SUCCESS == ctx->code) {
      ctx->code = extractSingleRspBlock(pRsp, pResBlock);
    }
    if (TSDB_CODE_SUCCESS == ctx->code) {
      ctx->code = updateValueListFromResBlock(ctx, pRemote, pResBlock);
    }
    if (TSDB_CODE_SUCCESS == ctx->code && pRsp->completed) {
      pRemote->flag &= (~VALUELIST_FLAG_VAL_UNSET);
      taosArraySet(ctx->subResNodes, pParam->subQIdx, &pParam->pRes);
    }

    blockDataDestroy(pResBlock);  
  } else if (0 == pRsp->numOfRows && pRsp->completed) {
    if (!pRemote->hasValue) {
      ctx->code = scalarBuildRemoteListHash(ctx->idStr, pRemote, NULL, 0);
    }
    if (TSDB_CODE_SUCCESS == ctx->code) {    
      pRemote->flag &= (~VALUELIST_FLAG_VAL_UNSET);
      taosArraySet(ctx->subResNodes, pParam->subQIdx, &pParam->pRes);
    }
  }

  *fetchDone = (TSDB_CODE_SUCCESS != ctx->code || pRsp->completed) ? true : false;

  if (!(*fetchDone)) {
    int32_t code = sendFetchRemoteNodeReq(ctx, pParam->subQIdx, pParam->pRes);
    if (TSDB_CODE_SUCCESS != code) {
      ctx->code = code;
      *fetchDone = true;
    }
  }
}

int32_t setRowHasNullFromResBlock(STaskSubJobCtx* ctx, bool* hasNull, SSDataBlock* pBlock) {
  int32_t code = 0;
  int32_t colNum = taosArrayGetSize(pBlock->pDataBlock);
  if (2 != colNum) {
    qError("%s invalid scl fetch res block, colNum:%d", ctx->idStr, colNum);
    return TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
  }
  
  SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, 1);
  if (colDataIsNull_s(pCol, 0)) {
    qError("%s invalid has_null res since it's null", ctx->idStr);
    return TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
  } else {
    *hasNull = *(bool*)colDataGetData(pCol, 0);
  }

  return code;
}

void handleRemoteRowRes(SScalarFetchParam* pParam, STaskSubJobCtx* ctx, SRetrieveTableRsp* pRsp) {
  SSDataBlock* pResBlock = NULL;

  qDebug("%s scl fetch row rsp received, subQIdx:%d, rows:%" PRId64 , ctx->idStr, pParam->subQIdx, pRsp->numOfRows);

  if (pRsp->numOfRows > 1 || pRsp->numOfBlocks > 1 || !pRsp->completed) {
    qError("%s invalid scl fetch row rsp received, subQIdx:%d, rows:%" PRId64 ", blocks:%d, completed:%d", 
      ctx->idStr, pParam->subQIdx, pRsp->numOfRows, pRsp->numOfBlocks, pRsp->completed);
    ctx->code = TSDB_CODE_PAR_INVALID_SCALAR_SUBQ_RES_ROWS;

    return;
  }

  SRemoteRowNode* pRemote = (SRemoteRowNode*)pParam->pRes;
  
  if (0 == pRsp->numOfRows) {
    pRemote->valSet = true;
    pRemote->hasValue = false;
    pRemote->hasNull = false;
    pRemote->val.isNull = true;
    pRemote->val.translate = true;
    pRemote->val.flag &= (~VALUE_FLAG_VAL_UNSET);
    taosArraySet(ctx->subResNodes, pParam->subQIdx, &pParam->pRes);

    return;
  }

  if (2 != pRsp->numOfCols) {
    qError("%s invalid scl fetch row rsp received, subQIdx:%d, cols:%" PRId64, ctx->idStr, pParam->subQIdx, pRsp->numOfCols);
    ctx->code = TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;

    return;
  }
  
  ctx->code = createExprSubQResBlock(&pResBlock, &pRemote->val.node.resType);
  if (TSDB_CODE_SUCCESS == ctx->code) {
    SColumnInfoData idata = createColumnInfoData(TSDB_DATA_TYPE_BOOL, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes, 0);
    ctx->code = blockDataAppendColInfo(pResBlock, &idata);
  }
  if (TSDB_CODE_SUCCESS == ctx->code) {
    ctx->code = blockDataEnsureCapacity(pResBlock, 1);
  }
  if (TSDB_CODE_SUCCESS == ctx->code) {
    ctx->code = extractSingleRspBlock(pRsp, pResBlock);
  }
  if (TSDB_CODE_SUCCESS == ctx->code) {
    ctx->code = setValueFromResBlock(ctx, &pRemote->val, pResBlock);
  }
  if (TSDB_CODE_SUCCESS == ctx->code) {
    ctx->code = setRowHasNullFromResBlock(ctx, &pRemote->hasNull, pResBlock);
  }
  if (TSDB_CODE_SUCCESS == ctx->code) {
    taosArraySet(ctx->subResNodes, pParam->subQIdx, &pParam->pRes);
  }
  if (TSDB_CODE_SUCCESS == ctx->code) {
    pRemote->valSet = true;
    pRemote->hasValue = true;
  }
  
  blockDataDestroy(pResBlock);  
}


int32_t setZeroRowsResValue(STaskSubJobCtx* ctx, SValueNode* pRes, int32_t rows) {
  pRes->node.type = QUERY_NODE_VALUE;
  pRes->flag &= (~VALUE_FLAG_VAL_UNSET);
  pRes->translate = true;
  
  return nodesSetValueNodeValue(pRes, &rows);
}

void handleRemoteZeroRowsRes(SScalarFetchParam* pParam, STaskSubJobCtx* ctx, SRetrieveTableRsp* pRsp, bool* fetchDone) {
  SRemoteZeroRowsNode* pRemote = (SRemoteZeroRowsNode*)pParam->pRes;

  qDebug("%s scl fetch zeroRows rsp received, subQIdx:%d, rows:%" PRId64 , ctx->idStr, pParam->subQIdx, pRsp->numOfRows);

  int32_t resRows = (pRsp->numOfRows > 0) ? 1 : 0;
  if (resRows > 0 || pRsp->completed) {
    ctx->code = setZeroRowsResValue(ctx, &pRemote->val, resRows);
    if (TSDB_CODE_SUCCESS == ctx->code) {    
      taosArraySet(ctx->subResNodes, pParam->subQIdx, &pParam->pRes);
    }

    *fetchDone = true;
  } else {
    *fetchDone = false;
  }

  if (!(*fetchDone)) {
    int32_t code = sendFetchRemoteNodeReq(ctx, pParam->subQIdx, pParam->pRes);
    if (TSDB_CODE_SUCCESS != code) {
      ctx->code = code;
      *fetchDone = true;
    }
  }
}


int32_t remoteFetchCallBack(void* param, SDataBuf* pMsg, int32_t code) {
  taosMemoryFreeClear(pMsg->pEpSet);

  SScalarFetchParam* pParam = (SScalarFetchParam*)param;
  STaskSubJobCtx* ctx = taosAcquireRef(fetchObjRefPool, pParam->subJobRefId);
  if (ctx == NULL) {
    qWarn("failed to acquire subJobCtx, since it may have been released, refId:%" PRIu64, pParam->subJobRefId);
    taosMemoryFree(pMsg->pData);
    return TSDB_CODE_SUCCESS;
  }

  char idStr[64];
  if (qDebugFlag & DEBUG_DEBUG) {
    tstrncpy(idStr, ctx->idStr, sizeof(idStr));
  }
  
  qDebug("%s subQIdx %d got rsp, blockIdx:%" PRId64 ", code:%d, rsp:%p", ctx->idStr, pParam->subQIdx, ctx->blockIdx, code, pMsg->pData);

  if (ctx->transporterId > 0) {
    int32_t ret = asyncFreeConnById(ctx->rpcHandle, ctx->transporterId);
    if (ret != 0) {
      qDebug("%s failed to free subQ rpc handle, code:%s, subQIdx:%d", ctx->idStr, tstrerror(ret), pParam->subQIdx);
    }
    ctx->transporterId = -1;
  }

  if (0 == code && NULL == pMsg->pData) {
    qError("%s invalid rsp msg, msgType:%d, len:%d", ctx->idStr, pMsg->msgType, pMsg->len);
    code = TSDB_CODE_QRY_INVALID_MSG;
  }

  if (code == TSDB_CODE_SUCCESS) {
    SRetrieveTableRsp* pRsp = pMsg->pData;
    pRsp->numOfRows = htobe64(pRsp->numOfRows);
    pRsp->compLen = htonl(pRsp->compLen);
    pRsp->payloadLen = htonl(pRsp->payloadLen);
    pRsp->numOfCols = htonl(pRsp->numOfCols);
    pRsp->useconds = htobe64(pRsp->useconds);
    pRsp->numOfBlocks = htonl(pRsp->numOfBlocks);

    qDebug("%s subQIdx %d blockIdx:%" PRIu64 " rsp detail, numOfBlocks:%d, numOfRows:%" PRId64 ", numOfCols:%" PRId64 ", completed:%d", 
      ctx->idStr, pParam->subQIdx, ctx->blockIdx, pRsp->numOfBlocks, pRsp->numOfRows, pRsp->numOfCols, pRsp->completed);

    ctx->blockIdx++;

    switch (nodeType(pParam->pRes)) {
      case QUERY_NODE_REMOTE_VALUE:
        handleRemoteValueRes(pParam, ctx, pRsp);
        break;
      case QUERY_NODE_REMOTE_VALUE_LIST: {
        bool fetchDone = false;
        handleRemoteValueListRes(pParam, ctx, pRsp, &fetchDone);
        qDebug("%s subQIdx %d handle remote value list finished, fetchDone:%d", idStr, pParam->subQIdx, fetchDone);
        if (!fetchDone) {
          goto _exit;
        }
        break;
      }  
      case QUERY_NODE_REMOTE_ROW:
        handleRemoteRowRes(pParam, ctx, pRsp);
        break;
      case QUERY_NODE_REMOTE_ZERO_ROWS: {
        bool fetchDone = false;
        handleRemoteZeroRowsRes(pParam, ctx, pRsp, &fetchDone);
        qDebug("%s subQIdx %d handle remote zeroRows finished, fetchDone:%d", idStr, pParam->subQIdx, fetchDone);
        if (!fetchDone) {
          goto _exit;
        }
        break;
      }
      default:
        qError("%s invalid scl fetch res node %d, subQIdx:%d", ctx->idStr, nodeType(pParam->pRes), pParam->subQIdx);
        ctx->code = TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
        break;
    }
  } else {
    ctx->code = rpcCvtErrCode(code);
    if (ctx->code != code) {
      qError("%s scl fetch rsp received, subQIdx:%d, error:%s, cvted error: %s", ctx->idStr, pParam->subQIdx,
             tstrerror(code), tstrerror(ctx->code));
    } else {
      qError("%s scl fetch rsp received, subQIdx:%d, error:%s", ctx->idStr, pParam->subQIdx, tstrerror(code));
    }
  }

  qDebug("%s subQIdx %d sem_post subQ ready", ctx->idStr, pParam->subQIdx);
  
  code = tsem_post(&ctx->ready);
  if (code != TSDB_CODE_SUCCESS) {
    qError("failed to invoke post when scl fetch rsp is ready, code:%s", tstrerror(code));
  }

_exit:

  code = taosReleaseRef(fetchObjRefPool, pParam->subJobRefId);
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
  }

  taosMemoryFree(pMsg->pData);

  return code;
}


int32_t sendFetchRemoteNodeReq(STaskSubJobCtx* ctx, int32_t subQIdx, SNode* pRes) {
  int32_t          code = TSDB_CODE_SUCCESS;
  int32_t          lino = 0;
  SDownstreamSourceNode* pSource = (SDownstreamSourceNode*)taosArrayGetP(ctx->subEndPoints, subQIdx);

  SResFetchReq req = {0};
  req.header.vgId = pSource->addr.nodeId;
  req.sId = pSource->sId;
  req.clientId = pSource->clientId;
  req.taskId = pSource->taskId;
  req.srcTaskId = ctx->taskId;
  req.blockIdx = ctx->blockIdx;
  req.queryId = ctx->queryId;
  req.execId = pSource->execId;

  int32_t msgSize = tSerializeSResFetchReq(NULL, 0, &req, false);
  if (msgSize < 0) {
    return msgSize;
  }

  void* msg = taosMemoryCalloc(1, msgSize);
  if (NULL == msg) {
    return terrno;
  }

  msgSize = tSerializeSResFetchReq(msg, msgSize, &req, false);
  if (msgSize < 0) {
    taosMemoryFree(msg);
    return msgSize;
  }

  qDebug("%s scl build fetch msg and send to nodeId:%d, ep:%s, clientId:0x%" PRIx64 " taskId:0x%" PRIx64
         ", execId:%d, blockIdx:%" PRId64,
         ctx->idStr, pSource->addr.nodeId, pSource->addr.epSet.eps[0].fqdn, pSource->clientId,
         pSource->taskId, pSource->execId, req.blockIdx);

  // send the fetch remote task result reques
  SMsgSendInfo* pMsgSendInfo = taosMemoryCalloc(1, sizeof(SMsgSendInfo));
  if (NULL == pMsgSendInfo) {
    taosMemoryFreeClear(msg);
    qError("%s prepare message %d failed", ctx->idStr, (int32_t)sizeof(SMsgSendInfo));
    return terrno;
  }

  SScalarFetchParam* param = taosMemoryMalloc(sizeof(SScalarFetchParam));
  if (NULL == param) {
    taosMemoryFreeClear(msg);
    taosMemoryFreeClear(pMsgSendInfo);
    qError("%s prepare param %d failed", ctx->idStr, (int32_t)sizeof(SScalarFetchParam));
    return terrno;
  }

  if (ctx->code) {
    qError("task has been killed, error:%s", tstrerror(ctx->code));
    taosMemoryFree(param);
    taosMemoryFreeClear(msg);
    taosMemoryFreeClear(pMsgSendInfo);
    code = ctx->code;
    goto _end;
  }
  
  param->subQIdx = subQIdx;
  param->pRes = pRes;
  param->subJobRefId = ctx->subJobRefId;

  pMsgSendInfo->param = param;
  pMsgSendInfo->paramFreeFp = taosAutoMemoryFree;
  pMsgSendInfo->msgInfo.pData = msg;
  pMsgSendInfo->msgInfo.len = msgSize;
  pMsgSendInfo->msgType = pSource->fetchMsgType;
  pMsgSendInfo->fp = remoteFetchCallBack;
  pMsgSendInfo->requestId = ctx->queryId;

  code = asyncSendMsgToServer(ctx->rpcHandle, &pSource->addr.epSet, &ctx->transporterId, pMsgSendInfo);
  QUERY_CHECK_CODE(code, lino, _end);
      
_end:

  if (code != TSDB_CODE_SUCCESS) {
    qError("%s %s failed at line %d since %s", ctx->idStr, __func__, lino, tstrerror(code));
  }
  
  return code;
}

int32_t fetchRemoteNodeImpl(STaskSubJobCtx* ctx, int32_t subQIdx, SNode* pRes) {
  int32_t          code = TSDB_CODE_SUCCESS;
  int32_t          lino = 0;

  ctx->blockIdx = 0;

  code = sendFetchRemoteNodeReq(ctx, subQIdx, pRes);
  QUERY_CHECK_CODE(code, lino, _end);

  code = qSemWait(ctx->pTaskInfo, &ctx->ready);
  if (isTaskKilled(ctx->pTaskInfo)) {
    code = getTaskCode(ctx->pTaskInfo);
  } else {
    code = ctx->code;
  }
      
_end:

  if (code != TSDB_CODE_SUCCESS) {
    qError("%s %s failed at line %d since %s", ctx->idStr, __func__, lino, tstrerror(code));
  }
  return code;
}

int32_t remoteNodeCopy(SNode* pSrc, SNode* pDst) {
  int32_t code = 0, lino = 0;
  
  switch (nodeType(pSrc)) {
    case QUERY_NODE_VALUE:
      TAOS_CHECK_EXIT(valueNodeCopy((SValueNode*)pSrc, &((SRemoteValueNode*)pDst)->val));
      ((SRemoteValueNode*)pDst)->val.node.type = QUERY_NODE_VALUE;
      break;
    case QUERY_NODE_REMOTE_VALUE_LIST: {
      SRemoteValueListNode* pDstNode = (SRemoteValueListNode*)pDst;
      memcpy(pDst, pSrc, sizeof(SRemoteValueListNode));
      pDstNode->hashAllocated = false;      
      break;
    } 
    case QUERY_NODE_REMOTE_ROW: {
      SRemoteRowNode* pRemote = (SRemoteRowNode*)pDst;
      TAOS_CHECK_EXIT(valueNodeCopy((SValueNode*)pSrc, &pRemote->val));
      pRemote->valSet = true;
      pRemote->hasValue = ((SRemoteRowNode*)pSrc)->hasValue;
      pRemote->hasNull = ((SRemoteRowNode*)pSrc)->hasNull;
      break;
    }
    default:
      break;
  }

_exit:

  if (code) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }

  return code;
}

int32_t qFetchRemoteNode(void* pCtx, int32_t subQIdx, SNode* pRes) {
  STaskSubJobCtx*  ctx = (STaskSubJobCtx*)pCtx;
  int32_t code = 0, lino = 0;
  int32_t       subEndPoinsNum = taosArrayGetSize(ctx->subEndPoints);
  if (subQIdx >= subEndPoinsNum) {
    qError("%s invalid subQIdx %d, subEndPointsNum:%d", ctx->idStr, subQIdx, subEndPoinsNum);
    return TSDB_CODE_QRY_SUBQ_NOT_FOUND;
  }

  SNode** ppRes = taosArrayGet(ctx->subResNodes, subQIdx);
  if (NULL == *ppRes) {
    TAOS_CHECK_EXIT(fetchRemoteNodeImpl(ctx, subQIdx, pRes));
    *ppRes = pRes;
  } else {
    TAOS_CHECK_EXIT(remoteNodeCopy(*ppRes, pRes));
  }

_exit:

  if (code) {
    qError("%s %s failed at line %d since %s", ctx->idStr, __func__, lino, tstrerror(code));
  } else {
    qDebug("%s %s subQIdx %d succeed", ctx->idStr, __func__, subQIdx);
  }

  return code;
}

taosdata / TDengine / #4983

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