executil.c 26.5 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
/*
 * 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 "os.h"
17 18 19 20
#include "index.h"
#include "function.h"
#include "functionMgt.h"
#include "tdatablock.h"
21
#include "thash.h"
22
#include "tmsg.h"
23

24 25
#include "executil.h"
#include "executorimpl.h"
H
Haojun Liao 已提交
26
#include "tcompression.h"
H
Haojun Liao 已提交
27

28
void initResultRowInfo(SResultRowInfo *pResultRowInfo) {
29 30
  pResultRowInfo->size       = 0;
  pResultRowInfo->cur.pageId = -1;
31 32
}

H
Haojun Liao 已提交
33
void cleanupResultRowInfo(SResultRowInfo *pResultRowInfo) {
H
Haojun Liao 已提交
34
  if (pResultRowInfo == NULL) {
35 36
    return;
  }
H
Haojun Liao 已提交
37

D
dapan1121 已提交
38
  for(int32_t i = 0; i < pResultRowInfo->size; ++i) {
H
Haojun Liao 已提交
39 40 41
//    if (pResultRowInfo->pResult[i]) {
//      taosMemoryFreeClear(pResultRowInfo->pResult[i]->key);
//    }
42
  }
43 44
}

H
Haojun Liao 已提交
45
void closeAllResultRows(SResultRowInfo *pResultRowInfo) {
46
// do nothing
47 48
}

H
Haojun Liao 已提交
49 50
bool isResultRowClosed(SResultRow* pRow) {
  return (pRow->closed == true);
51 52
}

H
Haojun Liao 已提交
53 54
void closeResultRow(SResultRow* pResultRow) {
  pResultRow->closed = true;
55 56
}

H
Haojun Liao 已提交
57
// TODO refactor: use macro
58
SResultRowEntryInfo* getResultEntryInfo(const SResultRow* pRow, int32_t index, const int32_t* offset) {
H
Haojun Liao 已提交
59
  assert(index >= 0 && offset != NULL);
H
Haojun Liao 已提交
60
  return (SResultRowEntryInfo*)((char*) pRow->pEntryInfo + offset[index]);
H
Haojun Liao 已提交
61 62
}

63 64 65 66 67 68 69 70
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;
71 72
}

H
Haojun Liao 已提交
73 74 75 76 77 78 79 80
void cleanupGroupResInfo(SGroupResInfo* pGroupResInfo) {
  assert(pGroupResInfo != NULL);

  taosArrayDestroy(pGroupResInfo->pRows);
  pGroupResInfo->pRows     = NULL;
  pGroupResInfo->index     = 0;
}

81
static int32_t resultrowComparAsc(const void* p1, const void* p2) {
82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98
  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;
  }
}

99 100 101 102 103
static int32_t resultrowComparDesc(const void* p1, const void* p2) {
  return resultrowComparAsc(p2, p1);
}

void initGroupedResultInfo(SGroupResInfo* pGroupResInfo, SHashObj* pHashmap, int32_t order) {
H
Haojun Liao 已提交
104 105 106 107
  if (pGroupResInfo->pRows != NULL) {
    taosArrayDestroy(pGroupResInfo->pRows);
  }

108 109 110 111 112 113 114 115 116 117 118 119
  // extract the result rows information from the hash map
  void* pData = NULL;
  pGroupResInfo->pRows = taosArrayInit(10, POINTER_BYTES);

  size_t keyLen = 0;
  while((pData = taosHashIterate(pHashmap, pData)) != NULL) {
    void* key = taosHashGetKey(pData, &keyLen);

    SResKeyPos* p = taosMemoryMalloc(keyLen + sizeof(SResultRowPosition));

    p->groupId = *(uint64_t*) key;
    p->pos = *(SResultRowPosition*) pData;
120
    memcpy(p->key, (char*)key + sizeof(uint64_t), keyLen - sizeof(uint64_t));
121 122 123 124

    taosArrayPush(pGroupResInfo->pRows, &p);
  }

125 126 127
  if (order == TSDB_ORDER_ASC || order == TSDB_ORDER_DESC) {
    __compar_fn_t fn = (order == TSDB_ORDER_ASC)? resultrowComparAsc:resultrowComparDesc;
    qsort(pGroupResInfo->pRows->pData, taosArrayGetSize(pGroupResInfo->pRows), POINTER_BYTES, fn);
128 129
  }

H
Haojun Liao 已提交
130
  pGroupResInfo->index = 0;
H
Haojun Liao 已提交
131 132 133
  assert(pGroupResInfo->index <= getNumOfTotalRes(pGroupResInfo));
}

H
Haojun Liao 已提交
134 135
void initMultiResInfoFromArrayList(SGroupResInfo* pGroupResInfo, SArray* pArrayList) {
  if (pGroupResInfo->pRows != NULL) {
5
54liuyao 已提交
136
    taosArrayDestroyP(pGroupResInfo->pRows, taosMemoryFree);
H
Haojun Liao 已提交
137 138
  }

139
  pGroupResInfo->pRows = pArrayList;
H
Haojun Liao 已提交
140 141 142 143
  pGroupResInfo->index = 0;
  ASSERT(pGroupResInfo->index <= getNumOfTotalRes(pGroupResInfo));
}

144
bool hasDataInGroupInfo(SGroupResInfo* pGroupResInfo) {
H
Haojun Liao 已提交
145 146 147 148 149 150 151 152 153 154 155 156 157
  if (pGroupResInfo->pRows == NULL) {
    return false;
  }

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

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

H
Haojun Liao 已提交
158
  return (int32_t) taosArrayGetSize(pGroupResInfo->pRows);
H
Haojun Liao 已提交
159 160
}

161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184
SArray* createSortInfo(SNodeList* pNodeList) {
  size_t  numOfCols = LIST_LENGTH(pNodeList);
  SArray* pList = taosArrayInit(numOfCols, sizeof(SBlockOrderInfo));
  if (pList == NULL) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    return pList;
  }

  for (int32_t i = 0; i < numOfCols; ++i) {
    SOrderByExprNode* pSortKey = (SOrderByExprNode*)nodesListGetNode(pNodeList, i);
    SBlockOrderInfo   bi = {0};
    bi.order = (pSortKey->order == ORDER_ASC) ? TSDB_ORDER_ASC : TSDB_ORDER_DESC;
    bi.nullFirst = (pSortKey->nullOrder == NULL_ORDER_FIRST);

    SColumnNode* pColNode = (SColumnNode*)pSortKey->pExpr;
    bi.slotId = pColNode->slotId;
    taosArrayPush(pList, &bi);
  }

  return pList;
}

SSDataBlock* createResDataBlock(SDataBlockDescNode* pNode) {
  int32_t numOfCols = LIST_LENGTH(pNode->pSlots);
H
Haojun Liao 已提交
185

186
  SSDataBlock* pBlock = createDataBlock();
H
Haojun Liao 已提交
187

188 189
  pBlock->info.blockId = pNode->dataBlockId;
  pBlock->info.type = STREAM_INVALID;
H
Haojun Liao 已提交
190

191 192
  for (int32_t i = 0; i < numOfCols; ++i) {
    SSlotDescNode*  pDescNode = (SSlotDescNode*)nodesListGetNode(pNode->pSlots, i);
193 194 195
//    if (!pDescNode->output) {  // todo disable it temporarily
//      continue;
//    }
196

197
    SColumnInfoData idata = createColumnInfoData(pDescNode->dataType.type, pDescNode->dataType.bytes, pDescNode->slotId);
198 199 200
    idata.info.scale = pDescNode->dataType.scale;
    idata.info.precision = pDescNode->dataType.precision;

201
    blockDataAppendColInfo(pBlock, &idata);
H
Haojun Liao 已提交
202 203
  }

204 205 206
  return pBlock;
}

wmmhello's avatar
wmmhello 已提交
207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287
EDealRes doTranslateTagExpr(SNode** pNode, void* pContext) {
  SMetaReader* mr = (SMetaReader*)pContext;
  if(nodeType(*pNode) == QUERY_NODE_COLUMN){
    SColumnNode* pSColumnNode = *(SColumnNode**)pNode;

    SValueNode *res = (SValueNode *)nodesMakeNode(QUERY_NODE_VALUE);
    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 = metaGetTableTagVal(&mr->me, 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);
      memcpy(res->datum.p, p, len);
    } else if (IS_VAR_DATA_TYPE(pSColumnNode->node.resType.type)) {
      res->datum.p = taosMemoryCalloc(tagVal.nData + VARSTR_HEADER_SIZE + 1, 1);
      memcpy(varDataVal(res->datum.p), tagVal.pData, tagVal.nData);
      varDataSetLen(res->datum.p, tagVal.nData);
    } else {
      nodesSetValueNodeValue(res, &(tagVal.i64));
    }
    nodesDestroyNode(*pNode);
    *pNode = (SNode*)res;
  }else if (nodeType(*pNode) == QUERY_NODE_FUNCTION){
    SFunctionNode * pFuncNode = *(SFunctionNode**)pNode;
    if(pFuncNode->funcType == FUNCTION_TYPE_TBNAME){
      SValueNode *res = (SValueNode *)nodesMakeNode(QUERY_NODE_VALUE);
      if (NULL == res) {
        return DEAL_RES_ERROR;
      }

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

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

  return DEAL_RES_CONTINUE;
}

static bool isTableOk(STableKeyInfo* info, SNode *pTagCond, SMeta *metaHandle){
  SMetaReader    mr = {0};
  metaReaderInit(&mr, metaHandle, 0);
  metaGetTableEntryByUid(&mr, info->uid);

  SNode *pTagCondTmp = nodesCloneNode(pTagCond);

  nodesRewriteExprPostOrder(&pTagCondTmp, doTranslateTagExpr, &mr);
  metaReaderClear(&mr);

  SNode*  pNew = NULL;
  int32_t code = scalarCalculateConstants(pTagCondTmp, &pNew);
  if (TSDB_CODE_SUCCESS != code) {
    nodesDestroyNode(pTagCondTmp);
    return false;
  }

  ASSERT(nodeType(pNew) == QUERY_NODE_VALUE);
  SValueNode *pValue = (SValueNode *)pNew;

  ASSERT(pValue->node.resType.type == TSDB_DATA_TYPE_BOOL);
  bool result = pValue->datum.b;
  nodesDestroyNode(pNew);
  return result;
}

int32_t getTableList(void* metaHandle, SScanPhysiNode* pScanNode, STableListInfo* pListInfo) {
288 289
  int32_t code = TSDB_CODE_SUCCESS;
  pListInfo->pTableList = taosArrayInit(8, sizeof(STableKeyInfo));
wmmhello's avatar
wmmhello 已提交
290
  if(pListInfo->pTableList == NULL) return TSDB_CODE_OUT_OF_MEMORY;
291 292 293

  uint64_t tableUid = pScanNode->uid;

D
dapan1121 已提交
294 295
  pListInfo->suid = pScanNode->suid;
  
wmmhello's avatar
wmmhello 已提交
296 297
  SNode* pTagCond = (SNode*)pListInfo->pTagCond;
  SNode* pTagIndexCond = (SNode*)pListInfo->pTagIndexCond;
298
  if (pScanNode->tableType == TSDB_SUPER_TABLE) {
wmmhello's avatar
wmmhello 已提交
299
    if (pTagIndexCond) {
300 301 302 303
      SIndexMetaArg metaArg = {
          .metaEx = metaHandle, .idx = tsdbGetIdx(metaHandle), .ivtIdx = tsdbGetIvtIdx(metaHandle), .suid = tableUid};

      SArray* res = taosArrayInit(8, sizeof(uint64_t));
wmmhello's avatar
wmmhello 已提交
304 305 306 307
      //code = doFilterTag(pTagIndexCond, &metaArg, res);
      code = TSDB_CODE_INDEX_REBUILDING;
      if (code == TSDB_CODE_INDEX_REBUILDING) {
        code = tsdbGetAllTableList(metaHandle, tableUid, pListInfo->pTableList);
308 309 310 311 312 313 314 315 316 317
      } else if (code != TSDB_CODE_SUCCESS) {
        qError("failed  to  get tableIds, reason: %s, suid: %" PRIu64 "", tstrerror(code), tableUid);
        taosArrayDestroy(res);
        terrno = code;
        return code;
      } else {
        qDebug("sucess to  get tableIds, size: %d, suid: %" PRIu64 "", (int)taosArrayGetSize(res), tableUid);
      }

      for (int i = 0; i < taosArrayGetSize(res); i++) {
wmmhello's avatar
wmmhello 已提交
318
        STableKeyInfo info = {.lastKey = TSKEY_INITIAL_VAL, .uid = *(uint64_t*)taosArrayGet(res, i)};
319 320 321 322 323 324
        taosArrayPush(pListInfo->pTableList, &info);
      }
      taosArrayDestroy(res);
    } else {
      code = tsdbGetAllTableList(metaHandle, tableUid, pListInfo->pTableList);
    }
wmmhello's avatar
wmmhello 已提交
325 326 327 328 329 330 331 332 333 334 335 336 337 338

    if(pTagCond){
      int32_t i = 0;
      while(i < taosArrayGetSize(pListInfo->pTableList)) {
        STableKeyInfo* info = taosArrayGet(pListInfo->pTableList, i);
        bool isOk = isTableOk(info, pTagCond, metaHandle);
        if(!isOk){
          taosArrayRemove(pListInfo->pTableList, i);
          continue;
        }
        i++;
      }
    }
  }else {  // Create one table group.
wmmhello's avatar
wmmhello 已提交
339
    STableKeyInfo info = {.lastKey = 0, .uid = tableUid};
340
    taosArrayPush(pListInfo->pTableList, &info);
H
Haojun Liao 已提交
341
  }
wmmhello's avatar
wmmhello 已提交
342 343 344 345 346
  pListInfo->pGroupList = taosArrayInit(4, POINTER_BYTES);
  if(pListInfo->pGroupList == NULL) return TSDB_CODE_OUT_OF_MEMORY;

  //put into list as default group, remove it if grouping sorting is required later
  taosArrayPush(pListInfo->pGroupList, &pListInfo->pTableList);
H
Haojun Liao 已提交
347

348 349
  return code;
}
H
Haojun Liao 已提交
350

351 352 353 354
SArray* extractPartitionColInfo(SNodeList* pNodeList) {
  if(!pNodeList) {
    return NULL;
  }
H
Haojun Liao 已提交
355

356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376
  size_t  numOfCols = LIST_LENGTH(pNodeList);
  SArray* pList = taosArrayInit(numOfCols, sizeof(SColumn));
  if (pList == NULL) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    return NULL;
  }

  for (int32_t i = 0; i < numOfCols; ++i) {
    SColumnNode* pColNode = (SColumnNode*)nodesListGetNode(pNodeList, i);

    // 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;

    taosArrayPush(pList, &c);
  }
H
Haojun Liao 已提交
377

378
  return pList;
H
Haojun Liao 已提交
379 380
}

381

382 383 384 385 386 387 388 389 390 391 392 393 394 395 396
SArray* extractColMatchInfo(SNodeList* pNodeList, SDataBlockDescNode* pOutputNodeList, int32_t* numOfOutputCols,
                            int32_t type) {
  size_t  numOfCols = LIST_LENGTH(pNodeList);
  SArray* pList = taosArrayInit(numOfCols, sizeof(SColMatchInfo));
  if (pList == NULL) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    return NULL;
  }

  for (int32_t i = 0; i < numOfCols; ++i) {
    STargetNode* pNode = (STargetNode*)nodesListGetNode(pNodeList, i);
    SColumnNode* pColNode = (SColumnNode*)pNode->pExpr;

    SColMatchInfo c = {0};
    c.output = true;
397
    c.colId  = pColNode->colId;
398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415
    c.srcSlotId = pColNode->slotId;
    c.matchType = type;
    c.targetSlotId = pNode->slotId;
    taosArrayPush(pList, &c);
  }

  *numOfOutputCols = 0;
  int32_t num = LIST_LENGTH(pOutputNodeList->pSlots);
  for (int32_t i = 0; i < num; ++i) {
    SSlotDescNode* pNode = (SSlotDescNode*)nodesListGetNode(pOutputNodeList->pSlots, i);

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

416 417 418 419 420 421 422
    SColMatchInfo* info = NULL;
    for (int32_t j = 0; j < taosArrayGetSize(pList); ++j) {
      info = taosArrayGet(pList, j);
      if (info->targetSlotId == pNode->slotId) {
        break;
      }
    }
423

424 425 426 427 428
    if (pNode->output) {
      (*numOfOutputCols) += 1;
    } else {
      info->output = false;
    }
429
  }
430 431

  return pList;
432 433
}

434 435 436 437 438 439 440 441 442 443 444 445
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;
  strncpy(s.name, name, tListLen(s.name));

  return s;
}
446

447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599
static SColumn* createColumn(int32_t blockId, int32_t slotId, int32_t colId, SDataType* pType) {
  SColumn* pCol = taosMemoryCalloc(1, sizeof(SColumn));
  if (pCol == NULL) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    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;

  return pCol;
}

SExprInfo* createExprInfo(SNodeList* pNodeList, SNodeList* pGroupKeys, int32_t* numOfExprs) {
  int32_t numOfFuncs = LIST_LENGTH(pNodeList);
  int32_t numOfGroupKeys = 0;
  if (pGroupKeys != NULL) {
    numOfGroupKeys = LIST_LENGTH(pGroupKeys);
  }

  *numOfExprs = numOfFuncs + numOfGroupKeys;
  SExprInfo* pExprs = taosMemoryCalloc(*numOfExprs, sizeof(SExprInfo));

  for (int32_t i = 0; i < (*numOfExprs); ++i) {
    STargetNode* pTargetNode = NULL;
    if (i < numOfFuncs) {
      pTargetNode = (STargetNode*)nodesListGetNode(pNodeList, i);
    } else {
      pTargetNode = (STargetNode*)nodesListGetNode(pGroupKeys, i - numOfFuncs);
    }

    SExprInfo* pExp = &pExprs[i];

    pExp->pExpr = taosMemoryCalloc(1, sizeof(tExprNode));
    pExp->pExpr->_function.num = 1;
    pExp->pExpr->_function.functionId = -1;

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

      pExp->base.pParam = taosMemoryCalloc(1, sizeof(SFunctParam));
      pExp->base.numOfParams = 1;

      SDataType* pType = &pColNode->node.resType;
      pExp->base.resSchema = createResSchema(pType->type, pType->bytes, pTargetNode->slotId, pType->scale,
                                             pType->precision, pColNode->colName);
      pExp->base.pParam[0].pCol = createColumn(pColNode->dataBlockId, pColNode->slotId, pColNode->colId, pType);
      pExp->base.pParam[0].type = FUNC_PARAM_TYPE_COLUMN;
    } else if (type == QUERY_NODE_VALUE) {
      pExp->pExpr->nodeType = QUERY_NODE_VALUE;
      SValueNode* pValNode = (SValueNode*)pTargetNode->pExpr;

      pExp->base.pParam = taosMemoryCalloc(1, sizeof(SFunctParam));
      pExp->base.numOfParams = 1;

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

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

      pExp->pExpr->_function.functionId = pFuncNode->funcId;
      pExp->pExpr->_function.pFunctNode = pFuncNode;

      strncpy(pExp->pExpr->_function.functionName, pFuncNode->functionName,
              tListLen(pExp->pExpr->_function.functionName));
#if 1
      // todo refactor: add the parameter for tbname function
      if (strcmp(pExp->pExpr->_function.functionName, "tbname") == 0) {
        pFuncNode->pParameterList = nodesMakeList();
        ASSERT(LIST_LENGTH(pFuncNode->pParameterList) == 0);
        SValueNode* res = (SValueNode*)nodesMakeNode(QUERY_NODE_VALUE);
        if (NULL == res) {  // todo handle error
        } else {
          res->node.resType = (SDataType){.bytes = sizeof(int64_t), .type = TSDB_DATA_TYPE_BIGINT};
          nodesListAppend(pFuncNode->pParameterList, (SNode*)res);
        }
      }
#endif

      int32_t numOfParam = LIST_LENGTH(pFuncNode->pParameterList);

      pExp->base.pParam = taosMemoryCalloc(numOfParam, sizeof(SFunctParam));
      pExp->base.numOfParams = numOfParam;

      for (int32_t j = 0; j < numOfParam; ++j) {
        SNode* p1 = nodesListGetNode(pFuncNode->pParameterList, j);
        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);
        } else if (p1->type == QUERY_NODE_VALUE) {
          SValueNode* pvn = (SValueNode*)p1;
          pExp->base.pParam[j].type = FUNC_PARAM_TYPE_VALUE;
          nodesValueNodeToVariant(pvn, &pExp->base.pParam[j].param);
        }
      }
    } else if (type == QUERY_NODE_OPERATOR) {
      pExp->pExpr->nodeType = QUERY_NODE_OPERATOR;
      SOperatorNode* pNode = (SOperatorNode*)pTargetNode->pExpr;

      pExp->base.pParam = taosMemoryCalloc(1, sizeof(SFunctParam));
      pExp->base.numOfParams = 1;

      SDataType* pType = &pNode->node.resType;
      pExp->base.resSchema = createResSchema(pType->type, pType->bytes, pTargetNode->slotId, pType->scale,
                                             pType->precision, pNode->node.aliasName);
      pExp->pExpr->_optrRoot.pRootNode = pTargetNode->pExpr;
    } else {
      ASSERT(0);
    }
  }

  return pExprs;
}

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

  SqlFunctionCtx*  p = NULL;
  SqlFunctionCtx** pValCtx = taosMemoryCalloc(numOfOutput, POINTER_BYTES);
  if (pValCtx == NULL) {
    return TSDB_CODE_QRY_OUT_OF_MEMORY;
  }

  for (int32_t i = 0; i < numOfOutput; ++i) {
    if (strcmp(pCtx[i].pExpr->pExpr->_function.functionName, "_select_value") == 0) {
      pValCtx[num++] = &pCtx[i];
    } else if (fmIsSelectFunc(pCtx[i].functionId)) {
      p = &pCtx[i];
    }
  }

  if (p != NULL) {
    p->subsidiaries.pCtx = pValCtx;
    p->subsidiaries.num = num;
600
  } else {
601
    taosMemoryFreeClear(pValCtx);
602
  }
603 604

  return TSDB_CODE_SUCCESS;
605 606
}

607
SqlFunctionCtx* createSqlFunctionCtx(SExprInfo* pExprInfo, int32_t numOfOutput, int32_t** rowEntryInfoOffset) {
608 609 610 611
  SqlFunctionCtx* pFuncCtx = (SqlFunctionCtx*)taosMemoryCalloc(numOfOutput, sizeof(SqlFunctionCtx));
  if (pFuncCtx == NULL) {
    return NULL;
  }
612

613 614
  *rowEntryInfoOffset = taosMemoryCalloc(numOfOutput, sizeof(int32_t));
  if (*rowEntryInfoOffset == 0) {
615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672
    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->curBufPage = -1;
    pCtx->pExpr = pExpr;

    if (pExpr->pExpr->nodeType == QUERY_NODE_FUNCTION) {
      SFuncExecEnv env = {0};
      pCtx->functionId = pExpr->pExpr->_function.pFunctNode->funcId;

      if (fmIsAggFunc(pCtx->functionId) || fmIsIndefiniteRowsFunc(pCtx->functionId)) {
        bool isUdaf = fmIsUserDefinedFunc(pCtx->functionId);
        if (!isUdaf) {
          fmGetFuncExecFuncs(pCtx->functionId, &pCtx->fpSet);
        } else {
          char* udfName = pExpr->pExpr->_function.pFunctNode->functionName;
          strncpy(pCtx->udfName, udfName, strlen(udfName));
          fmGetUdafExecFuncs(pCtx->functionId, &pCtx->fpSet);
        }
        pCtx->fpSet.getEnv(pExpr->pExpr->_function.pFunctNode, &env);
      } else {
        fmGetScalarFuncExecFuncs(pCtx->functionId, &pCtx->sfp);
        if (pCtx->sfp.getEnv != NULL) {
          pCtx->sfp.getEnv(pExpr->pExpr->_function.pFunctNode, &env);
        }
      }
      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);
    pCtx->input.pColumnDataAgg = taosMemoryCalloc(pFunct->numOfParams, POINTER_BYTES);

    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->increase = false;

    pCtx->param = pFunct->pParam;
  }

  for (int32_t i = 1; i < numOfOutput; ++i) {
673 674
    (*rowEntryInfoOffset)[i] =
        (int32_t)((*rowEntryInfoOffset)[i - 1] + sizeof(SResultRowEntryInfo) + pFuncCtx[i - 1].resDataInfo.interBufSize);
675 676 677 678
  }

  setSelectValueColumnInfo(pFuncCtx, numOfOutput);
  return pFuncCtx;
679
}
680 681

// NOTE: sources columns are more than the destination SSDatablock columns.
682 683
// doFilter in table scan needs every column even its output is false
void relocateColumnData(SSDataBlock* pBlock, const SArray* pColMatchInfo, SArray* pCols, bool outputEveryColumn) {
684 685 686 687 688 689
  size_t numOfSrcCols = taosArrayGetSize(pCols);

  int32_t i = 0, j = 0;
  while (i < numOfSrcCols && j < taosArrayGetSize(pColMatchInfo)) {
    SColumnInfoData* p = taosArrayGet(pCols, i);
    SColMatchInfo*   pmInfo = taosArrayGet(pColMatchInfo, j);
690
    if (!outputEveryColumn && !pmInfo->output) {
691 692 693 694 695 696
      j++;
      continue;
    }

    if (p->info.colId == pmInfo->colId) {
      SColumnInfoData* pDst = taosArrayGet(pBlock->pDataBlock, pmInfo->targetSlotId);
697
      colDataAssign(pDst, p, pBlock->info.rows, &pBlock->info);
698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790
      i++;
      j++;
    } else if (p->info.colId < pmInfo->colId) {
      i++;
    } else {
      ASSERT(0);
    }
  }
}

SInterval extractIntervalInfo(const STableScanPhysiNode* pTableScanNode) {
  SInterval interval = {
      .interval = pTableScanNode->interval,
      .sliding = pTableScanNode->sliding,
      .intervalUnit = pTableScanNode->intervalUnit,
      .slidingUnit = pTableScanNode->slidingUnit,
      .offset = pTableScanNode->offset,
  };

  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;
}

int32_t initQueryTableDataCond(SQueryTableDataCond* pCond, const STableScanPhysiNode* pTableScanNode) {
  pCond->loadExternalRows = false;

  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 == NULL) {
    terrno = TSDB_CODE_QRY_OUT_OF_MEMORY;
    return terrno;
  }

  // pCond->twindow = pTableScanNode->scanRange;
  // TODO: get it from stable scan node
  pCond->numOfTWindows = 1;
  pCond->twindows = taosMemoryCalloc(pCond->numOfTWindows, sizeof(STimeWindow));
  pCond->twindows[0] = pTableScanNode->scanRange;
  pCond->suid = pTableScanNode->scan.suid;

#if 1
  // todo work around a problem, remove it later
  for (int32_t i = 0; i < pCond->numOfTWindows; ++i) {
    if ((pCond->order == TSDB_ORDER_ASC && pCond->twindows[i].skey > pCond->twindows[i].ekey) ||
        (pCond->order == TSDB_ORDER_DESC && pCond->twindows[i].skey < pCond->twindows[i].ekey)) {
      TSWAP(pCond->twindows[i].skey, pCond->twindows[i].ekey);
    }
  }
#endif

  for (int32_t i = 0; i < pCond->numOfTWindows; ++i) {
    if ((pCond->order == TSDB_ORDER_ASC && pCond->twindows[i].skey > pCond->twindows[i].ekey) ||
        (pCond->order == TSDB_ORDER_DESC && pCond->twindows[i].skey < pCond->twindows[i].ekey)) {
      TSWAP(pCond->twindows[i].skey, pCond->twindows[i].ekey);
    }
  }
  taosqsort(pCond->twindows, pCond->numOfTWindows, sizeof(STimeWindow), pCond, compareTimeWindow);

  pCond->type = BLOCK_LOAD_OFFSET_SEQ_ORDER;
  //  pCond->type = pTableScanNode->scanFlag;

  int32_t j = 0;
  for (int32_t i = 0; i < pCond->numOfCols; ++i) {
    STargetNode* pNode = (STargetNode*)nodesListGetNode(pTableScanNode->scan.pScanCols, i);
    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;
    j += 1;
  }

  pCond->numOfCols = j;
  return TSDB_CODE_SUCCESS;
}

void cleanupQueryTableDataCond(SQueryTableDataCond* pCond) {
  taosMemoryFree(pCond->twindows);
  taosMemoryFree(pCond->colList);
791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819
}

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_NEXT:
      type = TSDB_FILL_NEXT;
      break;
    case FILL_MODE_VALUE:
      type = TSDB_FILL_SET_VALUE;
      break;
    case FILL_MODE_LINEAR:
      type = TSDB_FILL_LINEAR;
      break;
    default:
      type = TSDB_FILL_NONE;
  }

  return type;
}