homework-jianmu/source/client/src/clientStmt.c

1887 lines
55 KiB
C

#include "clientInt.h"
#include "clientLog.h"
#include "tdef.h"
#include "clientStmt.h"
char* gStmtStatusStr[] = {"unknown", "init", "prepare", "settbname", "settags",
"fetchFields", "bind", "bindCol", "addBatch", "exec"};
static FORCE_INLINE int32_t stmtAllocQNodeFromBuf(STableBufInfo* pTblBuf, void** pBuf) {
if (pTblBuf->buffOffset < pTblBuf->buffSize) {
*pBuf = (char*)pTblBuf->pCurBuff + pTblBuf->buffOffset;
pTblBuf->buffOffset += pTblBuf->buffUnit;
} else if (pTblBuf->buffIdx < taosArrayGetSize(pTblBuf->pBufList)) {
pTblBuf->pCurBuff = taosArrayGetP(pTblBuf->pBufList, pTblBuf->buffIdx++);
if (NULL == pTblBuf->pCurBuff) {
return TAOS_GET_TERRNO(terrno);
}
*pBuf = pTblBuf->pCurBuff;
pTblBuf->buffOffset = pTblBuf->buffUnit;
} else {
void* buff = taosMemoryMalloc(pTblBuf->buffSize);
if (NULL == buff) {
return terrno;
}
if (taosArrayPush(pTblBuf->pBufList, &buff) == NULL) {
return terrno;
}
pTblBuf->buffIdx++;
pTblBuf->pCurBuff = buff;
*pBuf = buff;
pTblBuf->buffOffset = pTblBuf->buffUnit;
}
return TSDB_CODE_SUCCESS;
}
bool stmtDequeue(STscStmt* pStmt, SStmtQNode** param) {
int i = 0;
while (0 == atomic_load_64((int64_t*)&pStmt->queue.qRemainNum)) {
if (i < 10) {
taosUsleep(1);
i++;
} else {
(void)taosThreadMutexLock(&pStmt->queue.mutex);
if (0 == atomic_load_64((int64_t*)&pStmt->queue.qRemainNum)) {
(void)taosThreadCondWait(&pStmt->queue.waitCond, &pStmt->queue.mutex);
}
(void)taosThreadMutexUnlock(&pStmt->queue.mutex);
}
}
if (pStmt->queue.stopQueue) {
return false;
}
SStmtQNode* orig = pStmt->queue.head;
SStmtQNode* node = pStmt->queue.head->next;
pStmt->queue.head = pStmt->queue.head->next;
*param = node;
(void)atomic_sub_fetch_64((int64_t*)&pStmt->queue.qRemainNum, 1);
return true;
}
void stmtEnqueue(STscStmt* pStmt, SStmtQNode* param) {
pStmt->queue.tail->next = param;
pStmt->queue.tail = param;
pStmt->stat.bindDataNum++;
(void)taosThreadMutexLock(&pStmt->queue.mutex);
(void)atomic_add_fetch_64(&pStmt->queue.qRemainNum, 1);
(void)taosThreadCondSignal(&(pStmt->queue.waitCond));
(void)taosThreadMutexUnlock(&pStmt->queue.mutex);
}
static int32_t stmtCreateRequest(STscStmt* pStmt) {
int32_t code = 0;
if (pStmt->exec.pRequest == NULL) {
code = buildRequest(pStmt->taos->id, pStmt->sql.sqlStr, pStmt->sql.sqlLen, NULL, false, &pStmt->exec.pRequest,
pStmt->reqid);
if (pStmt->reqid != 0) {
pStmt->reqid++;
}
if (TSDB_CODE_SUCCESS == code) {
pStmt->exec.pRequest->syncQuery = true;
pStmt->exec.pRequest->isStmtBind = true;
}
}
return code;
}
int32_t stmtSwitchStatus(STscStmt* pStmt, STMT_STATUS newStatus) {
int32_t code = 0;
if (newStatus >= STMT_INIT && newStatus < STMT_MAX) {
STMT_LOG_SEQ(newStatus);
}
if (pStmt->errCode && newStatus != STMT_PREPARE) {
STMT_DLOG("stmt already failed with err:%s", tstrerror(pStmt->errCode));
return pStmt->errCode;
}
switch (newStatus) {
case STMT_PREPARE:
pStmt->errCode = 0;
break;
case STMT_SETTBNAME:
if (STMT_STATUS_EQ(INIT)) {
code = TSDB_CODE_TSC_STMT_API_ERROR;
}
if (!pStmt->sql.stbInterlaceMode && (STMT_STATUS_EQ(BIND) || STMT_STATUS_EQ(BIND_COL))) {
code = TSDB_CODE_TSC_STMT_API_ERROR;
}
break;
case STMT_SETTAGS:
if (STMT_STATUS_NE(SETTBNAME) && STMT_STATUS_NE(FETCH_FIELDS)) {
code = TSDB_CODE_TSC_STMT_API_ERROR;
}
break;
case STMT_FETCH_FIELDS:
if (STMT_STATUS_EQ(INIT)) {
code = TSDB_CODE_TSC_STMT_API_ERROR;
}
break;
case STMT_BIND:
if (STMT_STATUS_EQ(INIT) || STMT_STATUS_EQ(BIND_COL)) {
code = TSDB_CODE_TSC_STMT_API_ERROR;
}
/*
if ((pStmt->sql.type == STMT_TYPE_MULTI_INSERT) && ()) {
code = TSDB_CODE_TSC_STMT_API_ERROR;
}
*/
break;
case STMT_BIND_COL:
if (STMT_STATUS_EQ(INIT) || STMT_STATUS_EQ(BIND)) {
code = TSDB_CODE_TSC_STMT_API_ERROR;
}
break;
case STMT_ADD_BATCH:
if (STMT_STATUS_NE(BIND) && STMT_STATUS_NE(BIND_COL) && STMT_STATUS_NE(FETCH_FIELDS)) {
code = TSDB_CODE_TSC_STMT_API_ERROR;
}
break;
case STMT_EXECUTE:
if (STMT_TYPE_QUERY == pStmt->sql.type) {
if (STMT_STATUS_NE(ADD_BATCH) && STMT_STATUS_NE(FETCH_FIELDS) && STMT_STATUS_NE(BIND) &&
STMT_STATUS_NE(BIND_COL)) {
code = TSDB_CODE_TSC_STMT_API_ERROR;
}
} else {
if (STMT_STATUS_NE(ADD_BATCH) && STMT_STATUS_NE(FETCH_FIELDS)) {
code = TSDB_CODE_TSC_STMT_API_ERROR;
}
}
break;
default:
code = TSDB_CODE_APP_ERROR;
break;
}
STMT_ERR_RET(code);
pStmt->sql.status = newStatus;
return TSDB_CODE_SUCCESS;
}
int32_t stmtGetTbName(TAOS_STMT* stmt, char** tbName) {
STscStmt* pStmt = (STscStmt*)stmt;
pStmt->sql.type = STMT_TYPE_MULTI_INSERT;
if ('\0' == pStmt->bInfo.tbName[0]) {
tscError("no table name set");
STMT_ERR_RET(TSDB_CODE_TSC_STMT_TBNAME_ERROR);
}
*tbName = pStmt->bInfo.tbName;
return TSDB_CODE_SUCCESS;
}
/*
int32_t stmtBackupQueryFields(STscStmt* pStmt) {
SStmtQueryResInfo* pRes = &pStmt->sql.queryRes;
pRes->numOfCols = pStmt->exec.pRequest->body.resInfo.numOfCols;
pRes->precision = pStmt->exec.pRequest->body.resInfo.precision;
int32_t size = pRes->numOfCols * sizeof(TAOS_FIELD);
pRes->fields = taosMemoryMalloc(size);
if (pRes->fields == NULL) {
STMT_ERR_RET(terrno);
}
pRes->userFields = taosMemoryMalloc(size);
if (pRes->userFields == NULL) {
taosMemoryFreeClear(pRes->fields);
STMT_ERR_RET(terrno);
}
(void)memcpy(pRes->fields, pStmt->exec.pRequest->body.resInfo.fields, size);
(void)memcpy(pRes->userFields, pStmt->exec.pRequest->body.resInfo.userFields, size);
return TSDB_CODE_SUCCESS;
}
int32_t stmtRestoreQueryFields(STscStmt* pStmt) {
SStmtQueryResInfo* pRes = &pStmt->sql.queryRes;
int32_t size = pRes->numOfCols * sizeof(TAOS_FIELD_E);
pStmt->exec.pRequest->body.resInfo.numOfCols = pRes->numOfCols;
pStmt->exec.pRequest->body.resInfo.precision = pRes->precision;
if (NULL == pStmt->exec.pRequest->body.resInfo.fields) {
pStmt->exec.pRequest->body.resInfo.fields = taosMemoryMalloc(size);
if (NULL == pStmt->exec.pRequest->body.resInfo.fields) {
STMT_ERR_RET(terrno);
}
(void)memcpy(pStmt->exec.pRequest->body.resInfo.fields, pRes->fields, size);
}
if (NULL == pStmt->exec.pRequest->body.resInfo.userFields) {
pStmt->exec.pRequest->body.resInfo.userFields = taosMemoryMalloc(size);
if (NULL == pStmt->exec.pRequest->body.resInfo.userFields) {
STMT_ERR_RET(terrno);
}
(void)memcpy(pStmt->exec.pRequest->body.resInfo.userFields, pRes->userFields, size);
}
return TSDB_CODE_SUCCESS;
}
*/
int32_t stmtUpdateBindInfo(TAOS_STMT* stmt, STableMeta* pTableMeta, void* tags, SName* tbName, const char* sTableName,
bool autoCreateTbl) {
STscStmt* pStmt = (STscStmt*)stmt;
char tbFName[TSDB_TABLE_FNAME_LEN];
int32_t code = tNameExtractFullName(tbName, tbFName);
if (code != 0) {
return code;
}
(void)memcpy(&pStmt->bInfo.sname, tbName, sizeof(*tbName));
tstrncpy(pStmt->bInfo.tbFName, tbFName, TSDB_TABLE_FNAME_LEN);
pStmt->bInfo.tbFName[sizeof(pStmt->bInfo.tbFName) - 1] = 0;
pStmt->bInfo.tbUid = autoCreateTbl ? 0 : pTableMeta->uid;
pStmt->bInfo.tbSuid = pTableMeta->suid;
pStmt->bInfo.tbVgId = pTableMeta->vgId;
pStmt->bInfo.tbType = pTableMeta->tableType;
pStmt->bInfo.boundTags = tags;
pStmt->bInfo.tagsCached = false;
tstrncpy(pStmt->bInfo.stbFName, sTableName, sizeof(pStmt->bInfo.stbFName));
return TSDB_CODE_SUCCESS;
}
int32_t stmtUpdateExecInfo(TAOS_STMT* stmt, SHashObj* pVgHash, SHashObj* pBlockHash) {
STscStmt* pStmt = (STscStmt*)stmt;
pStmt->sql.pVgHash = pVgHash;
pStmt->exec.pBlockHash = pBlockHash;
return TSDB_CODE_SUCCESS;
}
int32_t stmtUpdateInfo(TAOS_STMT* stmt, STableMeta* pTableMeta, void* tags, SName* tbName, bool autoCreateTbl,
SHashObj* pVgHash, SHashObj* pBlockHash, const char* sTableName, bool preCtbname) {
STscStmt* pStmt = (STscStmt*)stmt;
STMT_ERR_RET(stmtUpdateBindInfo(stmt, pTableMeta, tags, tbName, sTableName, autoCreateTbl));
STMT_ERR_RET(stmtUpdateExecInfo(stmt, pVgHash, pBlockHash));
pStmt->sql.autoCreateTbl = autoCreateTbl;
if (pStmt->sql.autoCreateTbl) {
pStmt->sql.stbInterlaceMode = false;
}
return TSDB_CODE_SUCCESS;
}
int32_t stmtGetExecInfo(TAOS_STMT* stmt, SHashObj** pVgHash, SHashObj** pBlockHash) {
STscStmt* pStmt = (STscStmt*)stmt;
*pVgHash = pStmt->sql.pVgHash;
pStmt->sql.pVgHash = NULL;
*pBlockHash = pStmt->exec.pBlockHash;
pStmt->exec.pBlockHash = NULL;
return TSDB_CODE_SUCCESS;
}
int32_t stmtCacheBlock(STscStmt* pStmt) {
if (pStmt->sql.type != STMT_TYPE_MULTI_INSERT) {
return TSDB_CODE_SUCCESS;
}
uint64_t uid = pStmt->bInfo.tbUid;
uint64_t cacheUid = (TSDB_CHILD_TABLE == pStmt->bInfo.tbType) ? pStmt->bInfo.tbSuid : uid;
if (taosHashGet(pStmt->sql.pTableCache, &cacheUid, sizeof(cacheUid))) {
return TSDB_CODE_SUCCESS;
}
STableDataCxt** pSrc = taosHashGet(pStmt->exec.pBlockHash, pStmt->bInfo.tbFName, strlen(pStmt->bInfo.tbFName));
if (!pSrc) {
return terrno;
}
STableDataCxt* pDst = NULL;
STMT_ERR_RET(qCloneStmtDataBlock(&pDst, *pSrc, true));
SStmtTableCache cache = {
.pDataCtx = pDst,
.boundTags = pStmt->bInfo.boundTags,
};
if (taosHashPut(pStmt->sql.pTableCache, &cacheUid, sizeof(cacheUid), &cache, sizeof(cache))) {
return terrno;
}
if (pStmt->sql.autoCreateTbl) {
pStmt->bInfo.tagsCached = true;
} else {
pStmt->bInfo.boundTags = NULL;
}
return TSDB_CODE_SUCCESS;
}
int32_t stmtParseSql(STscStmt* pStmt) {
pStmt->exec.pCurrBlock = NULL;
SStmtCallback stmtCb = {
.pStmt = pStmt,
.getTbNameFn = stmtGetTbName,
.setInfoFn = stmtUpdateInfo,
.getExecInfoFn = stmtGetExecInfo,
};
STMT_ERR_RET(stmtCreateRequest(pStmt));
pStmt->stat.parseSqlNum++;
STMT_ERR_RET(parseSql(pStmt->exec.pRequest, false, &pStmt->sql.pQuery, &stmtCb));
pStmt->sql.siInfo.pQuery = pStmt->sql.pQuery;
pStmt->bInfo.needParse = false;
if (pStmt->sql.pQuery->pRoot && 0 == pStmt->sql.type) {
pStmt->sql.type = STMT_TYPE_INSERT;
pStmt->sql.stbInterlaceMode = false;
} else if (pStmt->sql.pQuery->pPrepareRoot) {
pStmt->sql.type = STMT_TYPE_QUERY;
pStmt->sql.stbInterlaceMode = false;
return TSDB_CODE_SUCCESS;
}
STableDataCxt** pSrc =
(STableDataCxt**)taosHashGet(pStmt->exec.pBlockHash, pStmt->bInfo.tbFName, strlen(pStmt->bInfo.tbFName));
if (NULL == pSrc || NULL == *pSrc) {
return terrno;
}
STableDataCxt* pTableCtx = *pSrc;
if (pStmt->sql.stbInterlaceMode) {
int16_t lastIdx = -1;
for (int32_t i = 0; i < pTableCtx->boundColsInfo.numOfBound; ++i) {
if (pTableCtx->boundColsInfo.pColIndex[i] < lastIdx) {
pStmt->sql.stbInterlaceMode = false;
break;
}
lastIdx = pTableCtx->boundColsInfo.pColIndex[i];
}
}
if (NULL == pStmt->sql.pBindInfo) {
pStmt->sql.pBindInfo = taosMemoryMalloc(pTableCtx->boundColsInfo.numOfBound * sizeof(*pStmt->sql.pBindInfo));
if (NULL == pStmt->sql.pBindInfo) {
return terrno;
}
}
return TSDB_CODE_SUCCESS;
}
int32_t stmtCleanBindInfo(STscStmt* pStmt) {
pStmt->bInfo.tbUid = 0;
pStmt->bInfo.tbSuid = 0;
pStmt->bInfo.tbVgId = -1;
pStmt->bInfo.tbType = 0;
pStmt->bInfo.needParse = true;
pStmt->bInfo.inExecCache = false;
pStmt->bInfo.tbName[0] = 0;
pStmt->bInfo.tbFName[0] = 0;
if (!pStmt->bInfo.tagsCached) {
qDestroyBoundColInfo(pStmt->bInfo.boundTags);
taosMemoryFreeClear(pStmt->bInfo.boundTags);
}
pStmt->bInfo.stbFName[0] = 0;
return TSDB_CODE_SUCCESS;
}
void stmtFreeTableBlkList(STableColsData* pTb) {
(void)qResetStmtColumns(pTb->aCol, true);
taosArrayDestroy(pTb->aCol);
}
void stmtResetQueueTableBuf(STableBufInfo* pTblBuf, SStmtQueue* pQueue) {
pTblBuf->pCurBuff = taosArrayGetP(pTblBuf->pBufList, 0);
if (NULL == pTblBuf->pCurBuff) {
tscError("QInfo:%p, failed to get buffer from list", pTblBuf);
return;
}
pTblBuf->buffIdx = 1;
pTblBuf->buffOffset = sizeof(*pQueue->head);
pQueue->head = pQueue->tail = pTblBuf->pCurBuff;
pQueue->qRemainNum = 0;
pQueue->head->next = NULL;
}
int32_t stmtCleanExecInfo(STscStmt* pStmt, bool keepTable, bool deepClean) {
if (pStmt->sql.stbInterlaceMode) {
if (deepClean) {
taosHashCleanup(pStmt->exec.pBlockHash);
pStmt->exec.pBlockHash = NULL;
if (NULL != pStmt->exec.pCurrBlock) {
taosMemoryFreeClear(pStmt->exec.pCurrBlock->pData);
qDestroyStmtDataBlock(pStmt->exec.pCurrBlock);
}
} else {
pStmt->sql.siInfo.pTableColsIdx = 0;
stmtResetQueueTableBuf(&pStmt->sql.siInfo.tbBuf, &pStmt->queue);
}
} else {
if (STMT_TYPE_QUERY != pStmt->sql.type || deepClean) {
taos_free_result(pStmt->exec.pRequest);
pStmt->exec.pRequest = NULL;
}
size_t keyLen = 0;
void* pIter = taosHashIterate(pStmt->exec.pBlockHash, NULL);
while (pIter) {
STableDataCxt* pBlocks = *(STableDataCxt**)pIter;
char* key = taosHashGetKey(pIter, &keyLen);
STableMeta* pMeta = qGetTableMetaInDataBlock(pBlocks);
if (keepTable && pBlocks == pStmt->exec.pCurrBlock) {
TSWAP(pBlocks->pData, pStmt->exec.pCurrTbData);
STMT_ERR_RET(qResetStmtDataBlock(pBlocks, false));
pIter = taosHashIterate(pStmt->exec.pBlockHash, pIter);
continue;
}
qDestroyStmtDataBlock(pBlocks);
STMT_ERR_RET(taosHashRemove(pStmt->exec.pBlockHash, key, keyLen));
pIter = taosHashIterate(pStmt->exec.pBlockHash, pIter);
}
if (keepTable) {
return TSDB_CODE_SUCCESS;
}
taosHashCleanup(pStmt->exec.pBlockHash);
pStmt->exec.pBlockHash = NULL;
tDestroySubmitTbData(pStmt->exec.pCurrTbData, TSDB_MSG_FLG_ENCODE);
taosMemoryFreeClear(pStmt->exec.pCurrTbData);
}
STMT_ERR_RET(stmtCleanBindInfo(pStmt));
return TSDB_CODE_SUCCESS;
}
void stmtFreeTbBuf(void* buf) {
void* pBuf = *(void**)buf;
taosMemoryFree(pBuf);
}
void stmtFreeTbCols(void* buf) {
SArray* pCols = *(SArray**)buf;
taosArrayDestroy(pCols);
}
int32_t stmtCleanSQLInfo(STscStmt* pStmt) {
STMT_DLOG_E("start to free SQL info");
taosMemoryFree(pStmt->sql.pBindInfo);
taosMemoryFree(pStmt->sql.queryRes.fields);
taosMemoryFree(pStmt->sql.queryRes.userFields);
taosMemoryFree(pStmt->sql.sqlStr);
qDestroyQuery(pStmt->sql.pQuery);
taosArrayDestroy(pStmt->sql.nodeList);
taosHashCleanup(pStmt->sql.pVgHash);
pStmt->sql.pVgHash = NULL;
void* pIter = taosHashIterate(pStmt->sql.pTableCache, NULL);
while (pIter) {
SStmtTableCache* pCache = (SStmtTableCache*)pIter;
qDestroyStmtDataBlock(pCache->pDataCtx);
qDestroyBoundColInfo(pCache->boundTags);
taosMemoryFreeClear(pCache->boundTags);
pIter = taosHashIterate(pStmt->sql.pTableCache, pIter);
}
taosHashCleanup(pStmt->sql.pTableCache);
pStmt->sql.pTableCache = NULL;
STMT_ERR_RET(stmtCleanExecInfo(pStmt, false, true));
STMT_ERR_RET(stmtCleanBindInfo(pStmt));
taos_free_result(pStmt->sql.siInfo.pRequest);
taosHashCleanup(pStmt->sql.siInfo.pVgroupHash);
tSimpleHashCleanup(pStmt->sql.siInfo.pTableHash);
taosArrayDestroyEx(pStmt->sql.siInfo.tbBuf.pBufList, stmtFreeTbBuf);
taosMemoryFree(pStmt->sql.siInfo.pTSchema);
qDestroyStmtDataBlock(pStmt->sql.siInfo.pDataCtx);
taosArrayDestroyEx(pStmt->sql.siInfo.pTableCols, stmtFreeTbCols);
(void)memset(&pStmt->sql, 0, sizeof(pStmt->sql));
pStmt->sql.siInfo.tableColsReady = true;
STMT_DLOG_E("end to free SQL info");
return TSDB_CODE_SUCCESS;
}
int32_t stmtTryAddTableVgroupInfo(STscStmt* pStmt, int32_t* vgId) {
if (*vgId >= 0 && taosHashGet(pStmt->sql.pVgHash, (const char*)vgId, sizeof(*vgId))) {
return TSDB_CODE_SUCCESS;
}
SVgroupInfo vgInfo = {0};
SRequestConnInfo conn = {.pTrans = pStmt->taos->pAppInfo->pTransporter,
.requestId = pStmt->exec.pRequest->requestId,
.requestObjRefId = pStmt->exec.pRequest->self,
.mgmtEps = getEpSet_s(&pStmt->taos->pAppInfo->mgmtEp)};
int32_t code = catalogGetTableHashVgroup(pStmt->pCatalog, &conn, &pStmt->bInfo.sname, &vgInfo);
if (TSDB_CODE_SUCCESS != code) {
return code;
}
code =
taosHashPut(pStmt->sql.pVgHash, (const char*)&vgInfo.vgId, sizeof(vgInfo.vgId), (char*)&vgInfo, sizeof(vgInfo));
if (TSDB_CODE_SUCCESS != code) {
return code;
}
*vgId = vgInfo.vgId;
return TSDB_CODE_SUCCESS;
}
int32_t stmtRebuildDataBlock(STscStmt* pStmt, STableDataCxt* pDataBlock, STableDataCxt** newBlock, uint64_t uid,
uint64_t suid, int32_t vgId) {
STMT_ERR_RET(stmtTryAddTableVgroupInfo(pStmt, &vgId));
STMT_ERR_RET(qRebuildStmtDataBlock(newBlock, pDataBlock, uid, suid, vgId, pStmt->sql.autoCreateTbl));
STMT_DLOG("uid:%" PRId64 ", rebuild table data context, vgId:%d", uid, vgId);
return TSDB_CODE_SUCCESS;
}
int32_t stmtGetFromCache(STscStmt* pStmt) {
if (pStmt->sql.stbInterlaceMode && pStmt->sql.siInfo.pDataCtx) {
pStmt->bInfo.needParse = false;
pStmt->bInfo.inExecCache = false;
return TSDB_CODE_SUCCESS;
}
pStmt->bInfo.needParse = true;
pStmt->bInfo.inExecCache = false;
STableDataCxt** pCxtInExec = taosHashGet(pStmt->exec.pBlockHash, pStmt->bInfo.tbFName, strlen(pStmt->bInfo.tbFName));
if (pCxtInExec) {
pStmt->bInfo.needParse = false;
pStmt->bInfo.inExecCache = true;
pStmt->exec.pCurrBlock = *pCxtInExec;
if (pStmt->sql.autoCreateTbl) {
tscDebug("reuse stmt block for tb %s in execBlock", pStmt->bInfo.tbFName);
return TSDB_CODE_SUCCESS;
}
}
if (NULL == pStmt->pCatalog) {
STMT_ERR_RET(catalogGetHandle(pStmt->taos->pAppInfo->clusterId, &pStmt->pCatalog));
pStmt->sql.siInfo.pCatalog = pStmt->pCatalog;
}
if (NULL == pStmt->sql.pTableCache || taosHashGetSize(pStmt->sql.pTableCache) <= 0) {
if (pStmt->bInfo.inExecCache) {
pStmt->bInfo.needParse = false;
tscDebug("reuse stmt block for tb %s in execBlock", pStmt->bInfo.tbFName);
return TSDB_CODE_SUCCESS;
}
tscDebug("no stmt block cache for tb %s", pStmt->bInfo.tbFName);
return TSDB_CODE_SUCCESS;
}
if (pStmt->sql.autoCreateTbl) {
SStmtTableCache* pCache = taosHashGet(pStmt->sql.pTableCache, &pStmt->bInfo.tbSuid, sizeof(pStmt->bInfo.tbSuid));
if (pCache) {
pStmt->bInfo.needParse = false;
pStmt->bInfo.tbUid = 0;
STableDataCxt* pNewBlock = NULL;
STMT_ERR_RET(stmtRebuildDataBlock(pStmt, pCache->pDataCtx, &pNewBlock, 0, pStmt->bInfo.tbSuid, -1));
if (taosHashPut(pStmt->exec.pBlockHash, pStmt->bInfo.tbFName, strlen(pStmt->bInfo.tbFName), &pNewBlock,
POINTER_BYTES)) {
STMT_ERR_RET(terrno);
}
pStmt->exec.pCurrBlock = pNewBlock;
tscDebug("reuse stmt block for tb %s in sqlBlock, suid:0x%" PRIx64, pStmt->bInfo.tbFName, pStmt->bInfo.tbSuid);
return TSDB_CODE_SUCCESS;
}
STMT_RET(stmtCleanBindInfo(pStmt));
}
uint64_t uid, suid;
int32_t vgId;
int8_t tableType;
STableMeta* pTableMeta = NULL;
SRequestConnInfo conn = {.pTrans = pStmt->taos->pAppInfo->pTransporter,
.requestId = pStmt->exec.pRequest->requestId,
.requestObjRefId = pStmt->exec.pRequest->self,
.mgmtEps = getEpSet_s(&pStmt->taos->pAppInfo->mgmtEp)};
int32_t code = catalogGetTableMeta(pStmt->pCatalog, &conn, &pStmt->bInfo.sname, &pTableMeta);
pStmt->stat.ctgGetTbMetaNum++;
if (TSDB_CODE_PAR_TABLE_NOT_EXIST == code) {
tscDebug("tb %s not exist", pStmt->bInfo.tbFName);
STMT_ERR_RET(stmtCleanBindInfo(pStmt));
STMT_ERR_RET(code);
}
STMT_ERR_RET(code);
uid = pTableMeta->uid;
suid = pTableMeta->suid;
tableType = pTableMeta->tableType;
pStmt->bInfo.tbVgId = pTableMeta->vgId;
vgId = pTableMeta->vgId;
taosMemoryFree(pTableMeta);
uint64_t cacheUid = (TSDB_CHILD_TABLE == tableType) ? suid : uid;
if (uid == pStmt->bInfo.tbUid) {
pStmt->bInfo.needParse = false;
tscDebug("tb %s is current table", pStmt->bInfo.tbFName);
return TSDB_CODE_SUCCESS;
}
if (pStmt->bInfo.inExecCache) {
SStmtTableCache* pCache = taosHashGet(pStmt->sql.pTableCache, &cacheUid, sizeof(cacheUid));
if (NULL == pCache) {
tscError("table [%s, %" PRIx64 ", %" PRIx64 "] found in exec blockHash, but not in sql blockHash",
pStmt->bInfo.tbFName, uid, cacheUid);
STMT_ERR_RET(TSDB_CODE_APP_ERROR);
}
pStmt->bInfo.needParse = false;
pStmt->bInfo.tbUid = uid;
pStmt->bInfo.tbSuid = suid;
pStmt->bInfo.tbType = tableType;
pStmt->bInfo.boundTags = pCache->boundTags;
pStmt->bInfo.tagsCached = true;
tscDebug("tb %s in execBlock list, set to current", pStmt->bInfo.tbFName);
return TSDB_CODE_SUCCESS;
}
SStmtTableCache* pCache = taosHashGet(pStmt->sql.pTableCache, &cacheUid, sizeof(cacheUid));
if (pCache) {
pStmt->bInfo.needParse = false;
pStmt->bInfo.tbUid = uid;
pStmt->bInfo.tbSuid = suid;
pStmt->bInfo.tbType = tableType;
pStmt->bInfo.boundTags = pCache->boundTags;
pStmt->bInfo.tagsCached = true;
STableDataCxt* pNewBlock = NULL;
STMT_ERR_RET(stmtRebuildDataBlock(pStmt, pCache->pDataCtx, &pNewBlock, uid, suid, vgId));
if (taosHashPut(pStmt->exec.pBlockHash, pStmt->bInfo.tbFName, strlen(pStmt->bInfo.tbFName), &pNewBlock,
POINTER_BYTES)) {
STMT_ERR_RET(terrno);
}
pStmt->exec.pCurrBlock = pNewBlock;
tscDebug("tb %s in sqlBlock list, set to current", pStmt->bInfo.tbFName);
return TSDB_CODE_SUCCESS;
}
STMT_ERR_RET(stmtCleanBindInfo(pStmt));
return TSDB_CODE_SUCCESS;
}
int32_t stmtResetStmt(STscStmt* pStmt) {
STMT_ERR_RET(stmtCleanSQLInfo(pStmt));
pStmt->sql.pTableCache = taosHashInit(100, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), false, HASH_NO_LOCK);
if (NULL == pStmt->sql.pTableCache) {
STMT_ERR_RET(terrno);
}
pStmt->sql.status = STMT_INIT;
return TSDB_CODE_SUCCESS;
}
int32_t stmtAsyncOutput(STscStmt* pStmt, void* param) {
SStmtQNode* pParam = (SStmtQNode*)param;
if (pParam->restoreTbCols) {
for (int32_t i = 0; i < pStmt->sql.siInfo.pTableColsIdx; ++i) {
SArray** p = (SArray**)TARRAY_GET_ELEM(pStmt->sql.siInfo.pTableCols, i);
*p = taosArrayInit(20, POINTER_BYTES);
if (*p == NULL) {
STMT_ERR_RET(terrno);
}
}
atomic_store_8((int8_t*)&pStmt->sql.siInfo.tableColsReady, true);
} else {
STMT_ERR_RET(qAppendStmtTableOutput(pStmt->sql.pQuery, pStmt->sql.pVgHash, &pParam->tblData, pStmt->exec.pCurrBlock,
&pStmt->sql.siInfo, NULL));
// taosMemoryFree(pParam->pTbData);
(void)atomic_sub_fetch_64(&pStmt->sql.siInfo.tbRemainNum, 1);
}
return TSDB_CODE_SUCCESS;
}
void* stmtBindThreadFunc(void* param) {
setThreadName("stmtBind");
qInfo("stmt bind thread started");
STscStmt* pStmt = (STscStmt*)param;
while (true) {
if (pStmt->queue.stopQueue) {
break;
}
SStmtQNode* asyncParam = NULL;
if (!stmtDequeue(pStmt, &asyncParam)) {
continue;
}
int ret = stmtAsyncOutput(pStmt, asyncParam);
if (ret != 0) {
qError("stmtAsyncOutput failed, reason:%s", tstrerror(ret));
}
}
qInfo("stmt bind thread stopped");
return NULL;
}
int32_t stmtStartBindThread(STscStmt* pStmt) {
TdThreadAttr thAttr;
if (taosThreadAttrInit(&thAttr) != 0) {
return TSDB_CODE_TSC_INTERNAL_ERROR;
}
if (taosThreadAttrSetDetachState(&thAttr, PTHREAD_CREATE_JOINABLE) != 0) {
return TSDB_CODE_TSC_INTERNAL_ERROR;
}
if (taosThreadCreate(&pStmt->bindThread, &thAttr, stmtBindThreadFunc, pStmt) != 0) {
terrno = TAOS_SYSTEM_ERROR(ERRNO);
STMT_ERR_RET(terrno);
}
pStmt->bindThreadInUse = true;
(void)taosThreadAttrDestroy(&thAttr);
return TSDB_CODE_SUCCESS;
}
int32_t stmtInitQueue(STscStmt* pStmt) {
(void)taosThreadCondInit(&pStmt->queue.waitCond, NULL);
(void)taosThreadMutexInit(&pStmt->queue.mutex, NULL);
STMT_ERR_RET(stmtAllocQNodeFromBuf(&pStmt->sql.siInfo.tbBuf, (void**)&pStmt->queue.head));
pStmt->queue.tail = pStmt->queue.head;
return TSDB_CODE_SUCCESS;
}
int32_t stmtInitTableBuf(STableBufInfo* pTblBuf) {
pTblBuf->buffUnit = sizeof(SStmtQNode);
pTblBuf->buffSize = pTblBuf->buffUnit * 1000;
pTblBuf->pBufList = taosArrayInit(100, POINTER_BYTES);
if (NULL == pTblBuf->pBufList) {
return terrno;
}
void* buff = taosMemoryMalloc(pTblBuf->buffSize);
if (NULL == buff) {
return terrno;
}
if (taosArrayPush(pTblBuf->pBufList, &buff) == NULL) {
return terrno;
}
pTblBuf->pCurBuff = buff;
pTblBuf->buffIdx = 1;
pTblBuf->buffOffset = 0;
return TSDB_CODE_SUCCESS;
}
TAOS_STMT* stmtInit(STscObj* taos, int64_t reqid, TAOS_STMT_OPTIONS* pOptions) {
STscObj* pObj = (STscObj*)taos;
STscStmt* pStmt = NULL;
int32_t code = 0;
pStmt = taosMemoryCalloc(1, sizeof(STscStmt));
if (NULL == pStmt) {
return NULL;
}
pStmt->sql.pTableCache = taosHashInit(100, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), false, HASH_NO_LOCK);
if (NULL == pStmt->sql.pTableCache) {
taosMemoryFree(pStmt);
return NULL;
}
pStmt->taos = pObj;
pStmt->bInfo.needParse = true;
pStmt->sql.status = STMT_INIT;
pStmt->reqid = reqid;
pStmt->errCode = TSDB_CODE_SUCCESS;
if (NULL != pOptions) {
(void)memcpy(&pStmt->options, pOptions, sizeof(pStmt->options));
if (pOptions->singleStbInsert && pOptions->singleTableBindOnce) {
pStmt->stbInterlaceMode = true;
}
}
if (pStmt->stbInterlaceMode) {
pStmt->sql.siInfo.transport = taos->pAppInfo->pTransporter;
pStmt->sql.siInfo.acctId = taos->acctId;
pStmt->sql.siInfo.dbname = taos->db;
pStmt->sql.siInfo.mgmtEpSet = getEpSet_s(&pStmt->taos->pAppInfo->mgmtEp);
pStmt->sql.siInfo.pTableHash = tSimpleHashInit(100, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY));
if (NULL == pStmt->sql.siInfo.pTableHash) {
(void)stmtClose(pStmt);
return NULL;
}
pStmt->sql.siInfo.pTableCols = taosArrayInit(STMT_TABLE_COLS_NUM, POINTER_BYTES);
if (NULL == pStmt->sql.siInfo.pTableCols) {
(void)stmtClose(pStmt);
return NULL;
}
code = stmtInitTableBuf(&pStmt->sql.siInfo.tbBuf);
if (TSDB_CODE_SUCCESS == code) {
code = stmtInitQueue(pStmt);
}
if (TSDB_CODE_SUCCESS == code) {
code = stmtStartBindThread(pStmt);
}
if (TSDB_CODE_SUCCESS != code) {
terrno = code;
(void)stmtClose(pStmt);
return NULL;
}
}
pStmt->sql.siInfo.tableColsReady = true;
STMT_LOG_SEQ(STMT_INIT);
tscDebug("stmt:%p initialized", pStmt);
return pStmt;
}
int stmtPrepare(TAOS_STMT* stmt, const char* sql, unsigned long length) {
STscStmt* pStmt = (STscStmt*)stmt;
STMT_DLOG_E("start to prepare");
if (pStmt->errCode != TSDB_CODE_SUCCESS) {
return pStmt->errCode;
}
if (pStmt->sql.status >= STMT_PREPARE) {
STMT_ERR_RET(stmtResetStmt(pStmt));
}
STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_PREPARE));
if (length <= 0) {
length = strlen(sql);
}
pStmt->sql.sqlStr = taosStrndup(sql, length);
if (!pStmt->sql.sqlStr) {
return terrno;
}
pStmt->sql.sqlLen = length;
pStmt->sql.stbInterlaceMode = pStmt->stbInterlaceMode;
char* dbName = NULL;
if (qParseDbName(sql, length, &dbName)) {
STMT_ERR_RET(stmtSetDbName(stmt, dbName));
taosMemoryFreeClear(dbName);
}
return TSDB_CODE_SUCCESS;
}
int32_t stmtInitStbInterlaceTableInfo(STscStmt* pStmt) {
STableDataCxt** pSrc = taosHashGet(pStmt->exec.pBlockHash, pStmt->bInfo.tbFName, strlen(pStmt->bInfo.tbFName));
if (!pSrc) {
return terrno;
}
STableDataCxt* pDst = NULL;
STMT_ERR_RET(qCloneStmtDataBlock(&pDst, *pSrc, true));
pStmt->sql.siInfo.pDataCtx = pDst;
SArray* pTblCols = NULL;
for (int32_t i = 0; i < STMT_TABLE_COLS_NUM; i++) {
pTblCols = taosArrayInit(20, POINTER_BYTES);
if (NULL == pTblCols) {
return terrno;
}
if (taosArrayPush(pStmt->sql.siInfo.pTableCols, &pTblCols) == NULL) {
return terrno;
}
}
pStmt->sql.siInfo.boundTags = pStmt->bInfo.boundTags;
return TSDB_CODE_SUCCESS;
}
int stmtSetDbName(TAOS_STMT* stmt, const char* dbName) {
STscStmt* pStmt = (STscStmt*)stmt;
STMT_DLOG("start to set dbName:%s", dbName);
STMT_ERR_RET(stmtCreateRequest(pStmt));
// The SQL statement specifies a database name, overriding the previously specified database
taosMemoryFreeClear(pStmt->exec.pRequest->pDb);
pStmt->exec.pRequest->pDb = taosStrdup(dbName);
if (pStmt->exec.pRequest->pDb == NULL) {
return terrno;
}
return TSDB_CODE_SUCCESS;
}
int stmtSetTbName(TAOS_STMT* stmt, const char* tbName) {
STscStmt* pStmt = (STscStmt*)stmt;
int64_t startUs = taosGetTimestampUs();
STMT_DLOG("start to set tbName:%s", tbName);
if (pStmt->errCode != TSDB_CODE_SUCCESS) {
return pStmt->errCode;
}
STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_SETTBNAME));
int32_t insert = 0;
STMT_ERR_RET(stmtIsInsert(stmt, &insert));
if (0 == insert) {
tscError("set tb name not available for none insert statement");
STMT_ERR_RET(TSDB_CODE_TSC_STMT_API_ERROR);
}
if (!pStmt->sql.stbInterlaceMode || NULL == pStmt->sql.siInfo.pDataCtx) {
STMT_ERR_RET(stmtCreateRequest(pStmt));
STMT_ERR_RET(qCreateSName(&pStmt->bInfo.sname, tbName, pStmt->taos->acctId, pStmt->exec.pRequest->pDb,
pStmt->exec.pRequest->msgBuf, pStmt->exec.pRequest->msgBufLen));
STMT_ERR_RET(tNameExtractFullName(&pStmt->bInfo.sname, pStmt->bInfo.tbFName));
STMT_ERR_RET(stmtGetFromCache(pStmt));
if (pStmt->bInfo.needParse) {
tstrncpy(pStmt->bInfo.tbName, tbName, sizeof(pStmt->bInfo.tbName));
pStmt->bInfo.tbName[sizeof(pStmt->bInfo.tbName) - 1] = 0;
STMT_ERR_RET(stmtParseSql(pStmt));
}
} else {
tstrncpy(pStmt->bInfo.tbName, tbName, sizeof(pStmt->bInfo.tbName));
pStmt->bInfo.tbName[sizeof(pStmt->bInfo.tbName) - 1] = 0;
pStmt->exec.pRequest->requestId++;
pStmt->bInfo.needParse = false;
}
if (pStmt->sql.stbInterlaceMode && NULL == pStmt->sql.siInfo.pDataCtx) {
STMT_ERR_RET(stmtInitStbInterlaceTableInfo(pStmt));
}
int64_t startUs2 = taosGetTimestampUs();
pStmt->stat.setTbNameUs += startUs2 - startUs;
return TSDB_CODE_SUCCESS;
}
int stmtSetTbTags(TAOS_STMT* stmt, TAOS_MULTI_BIND* tags) {
STscStmt* pStmt = (STscStmt*)stmt;
STMT_DLOG_E("start to set tbTags");
if (pStmt->errCode != TSDB_CODE_SUCCESS) {
return pStmt->errCode;
}
STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_SETTAGS));
SBoundColInfo* tags_info = (SBoundColInfo*)pStmt->bInfo.boundTags;
if (tags_info->numOfBound <= 0 || tags_info->numOfCols <= 0) {
tscWarn("no tags bound in sql, will not bound tags");
return TSDB_CODE_SUCCESS;
}
if (pStmt->bInfo.inExecCache) {
return TSDB_CODE_SUCCESS;
}
STableDataCxt** pDataBlock =
(STableDataCxt**)taosHashGet(pStmt->exec.pBlockHash, pStmt->bInfo.tbFName, strlen(pStmt->bInfo.tbFName));
if (NULL == pDataBlock) {
tscError("table %s not found in exec blockHash", pStmt->bInfo.tbFName);
STMT_ERR_RET(TSDB_CODE_APP_ERROR);
}
tscDebug("start to bind stmt tag values");
STMT_ERR_RET(qBindStmtTagsValue(*pDataBlock, pStmt->bInfo.boundTags, pStmt->bInfo.tbSuid, pStmt->bInfo.stbFName,
pStmt->bInfo.sname.tname, tags, pStmt->exec.pRequest->msgBuf,
pStmt->exec.pRequest->msgBufLen, pStmt->taos->optionInfo.charsetCxt));
return TSDB_CODE_SUCCESS;
}
int stmtFetchTagFields(STscStmt* pStmt, int32_t* fieldNum, TAOS_FIELD_E** fields) {
if (pStmt->errCode != TSDB_CODE_SUCCESS) {
return pStmt->errCode;
}
if (STMT_TYPE_QUERY == pStmt->sql.type) {
tscError("invalid operation to get query tag fileds");
STMT_ERR_RET(TSDB_CODE_TSC_STMT_API_ERROR);
}
STableDataCxt** pDataBlock =
(STableDataCxt**)taosHashGet(pStmt->exec.pBlockHash, pStmt->bInfo.tbFName, strlen(pStmt->bInfo.tbFName));
if (NULL == pDataBlock) {
tscError("table %s not found in exec blockHash", pStmt->bInfo.tbFName);
STMT_ERR_RET(TSDB_CODE_APP_ERROR);
}
STMT_ERR_RET(qBuildStmtTagFields(*pDataBlock, pStmt->bInfo.boundTags, fieldNum, fields));
return TSDB_CODE_SUCCESS;
}
int stmtFetchColFields(STscStmt* pStmt, int32_t* fieldNum, TAOS_FIELD_E** fields) {
if (pStmt->errCode != TSDB_CODE_SUCCESS) {
return pStmt->errCode;
}
if (STMT_TYPE_QUERY == pStmt->sql.type) {
tscError("invalid operation to get query column fileds");
STMT_ERR_RET(TSDB_CODE_TSC_STMT_API_ERROR);
}
STableDataCxt** pDataBlock = NULL;
if (pStmt->sql.stbInterlaceMode) {
pDataBlock = &pStmt->sql.siInfo.pDataCtx;
} else {
pDataBlock =
(STableDataCxt**)taosHashGet(pStmt->exec.pBlockHash, pStmt->bInfo.tbFName, strlen(pStmt->bInfo.tbFName));
if (NULL == pDataBlock) {
tscError("table %s not found in exec blockHash", pStmt->bInfo.tbFName);
STMT_ERR_RET(TSDB_CODE_APP_ERROR);
}
}
STMT_ERR_RET(qBuildStmtColFields(*pDataBlock, fieldNum, fields));
return TSDB_CODE_SUCCESS;
}
/*
SArray* stmtGetFreeCol(STscStmt* pStmt, int32_t* idx) {
while (true) {
if (pStmt->exec.smInfo.pColIdx >= STMT_COL_BUF_SIZE) {
pStmt->exec.smInfo.pColIdx = 0;
}
if ((pStmt->exec.smInfo.pColIdx + 1) == atomic_load_32(&pStmt->exec.smInfo.pColFreeIdx)) {
taosUsleep(1);
continue;
}
*idx = pStmt->exec.smInfo.pColIdx;
return pStmt->exec.smInfo.pCols[pStmt->exec.smInfo.pColIdx++];
}
}
*/
int32_t stmtAppendTablePostHandle(STscStmt* pStmt, SStmtQNode* param) {
if (NULL == pStmt->sql.siInfo.pVgroupHash) {
pStmt->sql.siInfo.pVgroupHash =
taosHashInit(64, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, HASH_ENTRY_LOCK);
}
if (NULL == pStmt->sql.siInfo.pVgroupList) {
pStmt->sql.siInfo.pVgroupList = taosArrayInit(64, POINTER_BYTES);
}
if (NULL == pStmt->sql.siInfo.pRequest) {
STMT_ERR_RET(buildRequest(pStmt->taos->id, pStmt->sql.sqlStr, pStmt->sql.sqlLen, NULL, false,
(SRequestObj**)&pStmt->sql.siInfo.pRequest, pStmt->reqid));
if (pStmt->reqid != 0) {
pStmt->reqid++;
}
pStmt->exec.pRequest->syncQuery = true;
pStmt->sql.siInfo.requestId = ((SRequestObj*)pStmt->sql.siInfo.pRequest)->requestId;
pStmt->sql.siInfo.requestSelf = ((SRequestObj*)pStmt->sql.siInfo.pRequest)->self;
}
if (!pStmt->sql.siInfo.tbFromHash && pStmt->sql.siInfo.firstName[0] &&
0 == strcmp(pStmt->sql.siInfo.firstName, pStmt->bInfo.tbName)) {
pStmt->sql.siInfo.tbFromHash = true;
}
if (0 == pStmt->sql.siInfo.firstName[0]) {
tstrncpy(pStmt->sql.siInfo.firstName, pStmt->bInfo.tbName, TSDB_TABLE_NAME_LEN);
}
param->tblData.getFromHash = pStmt->sql.siInfo.tbFromHash;
param->next = NULL;
(void)atomic_add_fetch_64(&pStmt->sql.siInfo.tbRemainNum, 1);
stmtEnqueue(pStmt, param);
return TSDB_CODE_SUCCESS;
}
static FORCE_INLINE int32_t stmtGetTableColsFromCache(STscStmt* pStmt, SArray** pTableCols) {
while (true) {
if (pStmt->sql.siInfo.pTableColsIdx < taosArrayGetSize(pStmt->sql.siInfo.pTableCols)) {
*pTableCols = (SArray*)taosArrayGetP(pStmt->sql.siInfo.pTableCols, pStmt->sql.siInfo.pTableColsIdx++);
break;
} else {
SArray* pTblCols = NULL;
for (int32_t i = 0; i < 100; i++) {
pTblCols = taosArrayInit(20, POINTER_BYTES);
if (NULL == pTblCols) {
return terrno;
}
if (taosArrayPush(pStmt->sql.siInfo.pTableCols, &pTblCols) == NULL) {
return terrno;
}
}
}
}
return TSDB_CODE_SUCCESS;
}
int stmtBindBatch(TAOS_STMT* stmt, TAOS_MULTI_BIND* bind, int32_t colIdx) {
STscStmt* pStmt = (STscStmt*)stmt;
int32_t code = 0;
int64_t startUs = taosGetTimestampUs();
STMT_DLOG("start to bind stmt data, colIdx:%d", colIdx);
if (pStmt->errCode != TSDB_CODE_SUCCESS) {
return pStmt->errCode;
}
STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_BIND));
if (pStmt->bInfo.needParse && pStmt->sql.runTimes && pStmt->sql.type > 0 &&
STMT_TYPE_MULTI_INSERT != pStmt->sql.type) {
pStmt->bInfo.needParse = false;
}
if (pStmt->exec.pRequest && STMT_TYPE_QUERY == pStmt->sql.type && pStmt->sql.runTimes) {
taos_free_result(pStmt->exec.pRequest);
pStmt->exec.pRequest = NULL;
}
STMT_ERR_RET(stmtCreateRequest(pStmt));
if (pStmt->bInfo.needParse) {
STMT_ERR_RET(stmtParseSql(pStmt));
}
if (STMT_TYPE_QUERY == pStmt->sql.type) {
STMT_ERR_RET(qStmtBindParams(pStmt->sql.pQuery, bind, colIdx, pStmt->taos->optionInfo.charsetCxt));
SParseContext ctx = {.requestId = pStmt->exec.pRequest->requestId,
.acctId = pStmt->taos->acctId,
.db = pStmt->exec.pRequest->pDb,
.topicQuery = false,
.pSql = pStmt->sql.sqlStr,
.sqlLen = pStmt->sql.sqlLen,
.pMsg = pStmt->exec.pRequest->msgBuf,
.msgLen = ERROR_MSG_BUF_DEFAULT_SIZE,
.pTransporter = pStmt->taos->pAppInfo->pTransporter,
.pStmtCb = NULL,
.pUser = pStmt->taos->user,
.setQueryFp = setQueryRequest};
ctx.mgmtEpSet = getEpSet_s(&pStmt->taos->pAppInfo->mgmtEp);
STMT_ERR_RET(catalogGetHandle(pStmt->taos->pAppInfo->clusterId, &ctx.pCatalog));
STMT_ERR_RET(qStmtParseQuerySql(&ctx, pStmt->sql.pQuery));
if (pStmt->sql.pQuery->haveResultSet) {
STMT_ERR_RET(setResSchemaInfo(&pStmt->exec.pRequest->body.resInfo, pStmt->sql.pQuery->pResSchema,
pStmt->sql.pQuery->numOfResCols, pStmt->sql.pQuery->pResExtSchema, true));
taosMemoryFreeClear(pStmt->sql.pQuery->pResSchema);
taosMemoryFreeClear(pStmt->sql.pQuery->pResExtSchema);
setResPrecision(&pStmt->exec.pRequest->body.resInfo, pStmt->sql.pQuery->precision);
}
TSWAP(pStmt->exec.pRequest->dbList, pStmt->sql.pQuery->pDbList);
TSWAP(pStmt->exec.pRequest->tableList, pStmt->sql.pQuery->pTableList);
TSWAP(pStmt->exec.pRequest->targetTableList, pStmt->sql.pQuery->pTargetTableList);
// if (STMT_TYPE_QUERY == pStmt->sql.queryRes) {
// STMT_ERR_RET(stmtRestoreQueryFields(pStmt));
// }
// STMT_ERR_RET(stmtBackupQueryFields(pStmt));
return TSDB_CODE_SUCCESS;
}
if (pStmt->sql.stbInterlaceMode && NULL == pStmt->sql.siInfo.pDataCtx) {
STMT_ERR_RET(stmtInitStbInterlaceTableInfo(pStmt));
}
STableDataCxt** pDataBlock = NULL;
if (pStmt->exec.pCurrBlock) {
pDataBlock = &pStmt->exec.pCurrBlock;
} else {
pDataBlock =
(STableDataCxt**)taosHashGet(pStmt->exec.pBlockHash, pStmt->bInfo.tbFName, strlen(pStmt->bInfo.tbFName));
if (NULL == pDataBlock) {
tscError("table %s not found in exec blockHash", pStmt->bInfo.tbFName);
STMT_ERR_RET(TSDB_CODE_TSC_STMT_CACHE_ERROR);
}
pStmt->exec.pCurrBlock = *pDataBlock;
if (pStmt->sql.stbInterlaceMode) {
taosArrayDestroy(pStmt->exec.pCurrBlock->pData->aCol);
pStmt->exec.pCurrBlock->pData->aCol = NULL;
}
}
int64_t startUs2 = taosGetTimestampUs();
pStmt->stat.bindDataUs1 += startUs2 - startUs;
SStmtQNode* param = NULL;
if (pStmt->sql.stbInterlaceMode) {
STMT_ERR_RET(stmtAllocQNodeFromBuf(&pStmt->sql.siInfo.tbBuf, (void**)&param));
STMT_ERR_RET(stmtGetTableColsFromCache(pStmt, &param->tblData.aCol));
taosArrayClear(param->tblData.aCol);
// param->tblData.aCol = taosArrayInit(20, POINTER_BYTES);
param->restoreTbCols = false;
tstrncpy(param->tblData.tbName, pStmt->bInfo.tbName, TSDB_TABLE_NAME_LEN);
}
int64_t startUs3 = taosGetTimestampUs();
pStmt->stat.bindDataUs2 += startUs3 - startUs2;
SArray* pCols = pStmt->sql.stbInterlaceMode ? param->tblData.aCol : (*pDataBlock)->pData->aCol;
if (colIdx < 0) {
if (pStmt->sql.stbInterlaceMode) {
(*pDataBlock)->pData->flags = 0;
code =
qBindStmtStbColsValue(*pDataBlock, pCols, bind, pStmt->exec.pRequest->msgBuf, pStmt->exec.pRequest->msgBufLen,
&pStmt->sql.siInfo.pTSchema, pStmt->sql.pBindInfo, pStmt->taos->optionInfo.charsetCxt);
} else {
code = qBindStmtColsValue(*pDataBlock, pCols, bind, pStmt->exec.pRequest->msgBuf, pStmt->exec.pRequest->msgBufLen,
pStmt->taos->optionInfo.charsetCxt);
}
if (code) {
tscError("qBindStmtColsValue failed, error:%s", tstrerror(code));
STMT_ERR_RET(code);
}
} else {
if (pStmt->sql.stbInterlaceMode) {
tscError("bind single column not allowed in stb insert mode");
STMT_ERR_RET(TSDB_CODE_TSC_STMT_API_ERROR);
}
if (colIdx != (pStmt->bInfo.sBindLastIdx + 1) && colIdx != 0) {
tscError("bind column index not in sequence");
STMT_ERR_RET(TSDB_CODE_APP_ERROR);
}
pStmt->bInfo.sBindLastIdx = colIdx;
if (0 == colIdx) {
pStmt->bInfo.sBindRowNum = bind->num;
}
code =
qBindStmtSingleColValue(*pDataBlock, pCols, bind, pStmt->exec.pRequest->msgBuf, pStmt->exec.pRequest->msgBufLen,
colIdx, pStmt->bInfo.sBindRowNum, pStmt->taos->optionInfo.charsetCxt);
if (code) {
tscError("qBindStmtSingleColValue failed, error:%s", tstrerror(code));
STMT_ERR_RET(code);
}
}
int64_t startUs4 = taosGetTimestampUs();
pStmt->stat.bindDataUs3 += startUs4 - startUs3;
if (pStmt->sql.stbInterlaceMode) {
STMT_ERR_RET(stmtAppendTablePostHandle(pStmt, param));
}
pStmt->stat.bindDataUs4 += taosGetTimestampUs() - startUs4;
return TSDB_CODE_SUCCESS;
}
int stmtAddBatch(TAOS_STMT* stmt) {
STscStmt* pStmt = (STscStmt*)stmt;
int64_t startUs = taosGetTimestampUs();
STMT_DLOG_E("start to add batch");
if (pStmt->errCode != TSDB_CODE_SUCCESS) {
return pStmt->errCode;
}
STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_ADD_BATCH));
if (pStmt->sql.stbInterlaceMode) {
int64_t startUs2 = taosGetTimestampUs();
pStmt->stat.addBatchUs += startUs2 - startUs;
pStmt->sql.siInfo.tableColsReady = false;
SStmtQNode* param = NULL;
STMT_ERR_RET(stmtAllocQNodeFromBuf(&pStmt->sql.siInfo.tbBuf, (void**)&param));
param->restoreTbCols = true;
param->next = NULL;
stmtEnqueue(pStmt, param);
return TSDB_CODE_SUCCESS;
}
STMT_ERR_RET(stmtCacheBlock(pStmt));
return TSDB_CODE_SUCCESS;
}
/*
int stmtUpdateTableUid(STscStmt* pStmt, SSubmitRsp* pRsp) {
tscDebug("stmt start to update tbUid, blockNum:%d", pRsp->nBlocks);
int32_t code = 0;
int32_t finalCode = 0;
size_t keyLen = 0;
void* pIter = taosHashIterate(pStmt->exec.pBlockHash, NULL);
while (pIter) {
STableDataCxt* pBlock = *(STableDataCxt**)pIter;
char* key = taosHashGetKey(pIter, &keyLen);
STableMeta* pMeta = qGetTableMetaInDataBlock(pBlock);
if (pMeta->uid) {
pIter = taosHashIterate(pStmt->exec.pBlockHash, pIter);
continue;
}
SSubmitBlkRsp* blkRsp = NULL;
int32_t i = 0;
for (; i < pRsp->nBlocks; ++i) {
blkRsp = pRsp->pBlocks + i;
if (strlen(blkRsp->tblFName) != keyLen) {
continue;
}
if (strncmp(blkRsp->tblFName, key, keyLen)) {
continue;
}
break;
}
if (i < pRsp->nBlocks) {
tscDebug("auto created table %s uid updated from %" PRIx64 " to %" PRIx64, blkRsp->tblFName, pMeta->uid,
blkRsp->uid);
pMeta->uid = blkRsp->uid;
pStmt->bInfo.tbUid = blkRsp->uid;
} else {
tscDebug("table %s not found in submit rsp, will update from catalog", pStmt->bInfo.tbFName);
if (NULL == pStmt->pCatalog) {
code = catalogGetHandle(pStmt->taos->pAppInfo->clusterId, &pStmt->pCatalog);
if (code) {
pIter = taosHashIterate(pStmt->exec.pBlockHash, pIter);
finalCode = code;
continue;
}
}
code = stmtCreateRequest(pStmt);
if (code) {
pIter = taosHashIterate(pStmt->exec.pBlockHash, pIter);
finalCode = code;
continue;
}
STableMeta* pTableMeta = NULL;
SRequestConnInfo conn = {.pTrans = pStmt->taos->pAppInfo->pTransporter,
.requestId = pStmt->exec.pRequest->requestId,
.requestObjRefId = pStmt->exec.pRequest->self,
.mgmtEps = getEpSet_s(&pStmt->taos->pAppInfo->mgmtEp)};
code = catalogGetTableMeta(pStmt->pCatalog, &conn, &pStmt->bInfo.sname, &pTableMeta);
pStmt->stat.ctgGetTbMetaNum++;
taos_free_result(pStmt->exec.pRequest);
pStmt->exec.pRequest = NULL;
if (code || NULL == pTableMeta) {
pIter = taosHashIterate(pStmt->exec.pBlockHash, pIter);
finalCode = code;
taosMemoryFree(pTableMeta);
continue;
}
pMeta->uid = pTableMeta->uid;
pStmt->bInfo.tbUid = pTableMeta->uid;
taosMemoryFree(pTableMeta);
}
pIter = taosHashIterate(pStmt->exec.pBlockHash, pIter);
}
return finalCode;
}
*/
/*
int stmtStaticModeExec(TAOS_STMT* stmt) {
STscStmt* pStmt = (STscStmt*)stmt;
int32_t code = 0;
SSubmitRsp* pRsp = NULL;
if (pStmt->sql.staticMode) {
return TSDB_CODE_TSC_STMT_API_ERROR;
}
STMT_DLOG_E("start to exec");
STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_EXECUTE));
STMT_ERR_RET(qBuildStmtOutputFromTbList(pStmt->sql.pQuery, pStmt->sql.pVgHash, pStmt->exec.pTbBlkList,
pStmt->exec.pCurrBlock, pStmt->exec.tbBlkNum));
launchQueryImpl(pStmt->exec.pRequest, pStmt->sql.pQuery, true, NULL);
if (pStmt->exec.pRequest->code && NEED_CLIENT_HANDLE_ERROR(pStmt->exec.pRequest->code)) {
code = refreshMeta(pStmt->exec.pRequest->pTscObj, pStmt->exec.pRequest);
if (code) {
pStmt->exec.pRequest->code = code;
} else {
tFreeSSubmitRsp(pRsp);
STMT_ERR_RET(stmtResetStmt(pStmt));
STMT_ERR_RET(TSDB_CODE_NEED_RETRY);
}
}
STMT_ERR_JRET(pStmt->exec.pRequest->code);
pStmt->exec.affectedRows = taos_affected_rows(pStmt->exec.pRequest);
pStmt->affectedRows += pStmt->exec.affectedRows;
_return:
stmtCleanExecInfo(pStmt, (code ? false : true), false);
tFreeSSubmitRsp(pRsp);
++pStmt->sql.runTimes;
STMT_RET(code);
}
*/
int stmtExec(TAOS_STMT* stmt) {
STscStmt* pStmt = (STscStmt*)stmt;
int32_t code = 0;
SSubmitRsp* pRsp = NULL;
int64_t startUs = taosGetTimestampUs();
STMT_DLOG_E("start to exec");
if (pStmt->errCode != TSDB_CODE_SUCCESS) {
return pStmt->errCode;
}
STMT_ERR_RET(stmtSwitchStatus(pStmt, STMT_EXECUTE));
if (STMT_TYPE_QUERY == pStmt->sql.type) {
launchQueryImpl(pStmt->exec.pRequest, pStmt->sql.pQuery, true, NULL);
} else {
if (pStmt->sql.stbInterlaceMode) {
int64_t startTs = taosGetTimestampUs();
while (atomic_load_64(&pStmt->sql.siInfo.tbRemainNum)) {
taosUsleep(1);
}
pStmt->stat.execWaitUs += taosGetTimestampUs() - startTs;
STMT_ERR_RET(qBuildStmtFinOutput(pStmt->sql.pQuery, pStmt->sql.pVgHash, pStmt->sql.siInfo.pVgroupList));
taosHashCleanup(pStmt->sql.siInfo.pVgroupHash);
pStmt->sql.siInfo.pVgroupHash = NULL;
pStmt->sql.siInfo.pVgroupList = NULL;
} else {
tDestroySubmitTbData(pStmt->exec.pCurrTbData, TSDB_MSG_FLG_ENCODE);
taosMemoryFreeClear(pStmt->exec.pCurrTbData);
STMT_ERR_RET(qCloneCurrentTbData(pStmt->exec.pCurrBlock, &pStmt->exec.pCurrTbData));
STMT_ERR_RET(qBuildStmtOutput(pStmt->sql.pQuery, pStmt->sql.pVgHash, pStmt->exec.pBlockHash));
}
launchQueryImpl(pStmt->exec.pRequest, pStmt->sql.pQuery, true, NULL);
}
if (pStmt->exec.pRequest->code && NEED_CLIENT_HANDLE_ERROR(pStmt->exec.pRequest->code)) {
code = refreshMeta(pStmt->exec.pRequest->pTscObj, pStmt->exec.pRequest);
if (code) {
pStmt->exec.pRequest->code = code;
} else {
tFreeSSubmitRsp(pRsp);
STMT_ERR_RET(stmtResetStmt(pStmt));
STMT_ERR_RET(TSDB_CODE_NEED_RETRY);
}
}
STMT_ERR_JRET(pStmt->exec.pRequest->code);
pStmt->exec.affectedRows = taos_affected_rows(pStmt->exec.pRequest);
pStmt->affectedRows += pStmt->exec.affectedRows;
_return:
while (0 == atomic_load_8((int8_t*)&pStmt->sql.siInfo.tableColsReady)) {
taosUsleep(1);
}
STMT_ERR_RET(stmtCleanExecInfo(pStmt, (code ? false : true), false));
tFreeSSubmitRsp(pRsp);
++pStmt->sql.runTimes;
int64_t startUs2 = taosGetTimestampUs();
pStmt->stat.execUseUs += startUs2 - startUs;
STMT_RET(code);
}
int stmtClose(TAOS_STMT* stmt) {
STscStmt* pStmt = (STscStmt*)stmt;
STMT_DLOG_E("start to free stmt");
if (pStmt->bindThreadInUse) {
pStmt->queue.stopQueue = true;
(void)taosThreadMutexLock(&pStmt->queue.mutex);
(void)atomic_add_fetch_64(&pStmt->queue.qRemainNum, 1);
(void)taosThreadCondSignal(&(pStmt->queue.waitCond));
(void)taosThreadMutexUnlock(&pStmt->queue.mutex);
(void)taosThreadJoin(pStmt->bindThread, NULL);
pStmt->bindThreadInUse = false;
(void)taosThreadCondDestroy(&pStmt->queue.waitCond);
(void)taosThreadMutexDestroy(&pStmt->queue.mutex);
}
STMT_DLOG("stmt %p closed, stbInterlaceMode:%d, statInfo: ctgGetTbMetaNum=>%" PRId64 ", getCacheTbInfo=>%" PRId64
", parseSqlNum=>%" PRId64 ", pStmt->stat.bindDataNum=>%" PRId64
", settbnameAPI:%u, bindAPI:%u, addbatchAPI:%u, execAPI:%u"
", setTbNameUs:%" PRId64 ", bindDataUs:%" PRId64 ",%" PRId64 ",%" PRId64 ",%" PRId64 " addBatchUs:%" PRId64
", execWaitUs:%" PRId64 ", execUseUs:%" PRId64,
pStmt, pStmt->sql.stbInterlaceMode, pStmt->stat.ctgGetTbMetaNum, pStmt->stat.getCacheTbInfo,
pStmt->stat.parseSqlNum, pStmt->stat.bindDataNum, pStmt->seqIds[STMT_SETTBNAME], pStmt->seqIds[STMT_BIND],
pStmt->seqIds[STMT_ADD_BATCH], pStmt->seqIds[STMT_EXECUTE], pStmt->stat.setTbNameUs,
pStmt->stat.bindDataUs1, pStmt->stat.bindDataUs2, pStmt->stat.bindDataUs3, pStmt->stat.bindDataUs4,
pStmt->stat.addBatchUs, pStmt->stat.execWaitUs, pStmt->stat.execUseUs);
STMT_ERR_RET(stmtCleanSQLInfo(pStmt));
taosMemoryFree(stmt);
return TSDB_CODE_SUCCESS;
}
const char* stmtErrstr(TAOS_STMT* stmt) {
STscStmt* pStmt = (STscStmt*)stmt;
if (stmt == NULL || NULL == pStmt->exec.pRequest) {
return (char*)tstrerror(terrno);
}
pStmt->exec.pRequest->code = terrno;
return taos_errstr(pStmt->exec.pRequest);
}
int stmtAffectedRows(TAOS_STMT* stmt) { return ((STscStmt*)stmt)->affectedRows; }
int stmtAffectedRowsOnce(TAOS_STMT* stmt) { return ((STscStmt*)stmt)->exec.affectedRows; }
int stmtIsInsert(TAOS_STMT* stmt, int* insert) {
STscStmt* pStmt = (STscStmt*)stmt;
STMT_DLOG_E("start is insert");
if (pStmt->sql.type) {
*insert = (STMT_TYPE_INSERT == pStmt->sql.type || STMT_TYPE_MULTI_INSERT == pStmt->sql.type);
} else {
*insert = qIsInsertValuesSql(pStmt->sql.sqlStr, pStmt->sql.sqlLen);
}
return TSDB_CODE_SUCCESS;
}
int stmtGetTagFields(TAOS_STMT* stmt, int* nums, TAOS_FIELD_E** fields) {
int32_t code = 0;
STscStmt* pStmt = (STscStmt*)stmt;
int32_t preCode = pStmt->errCode;
STMT_DLOG_E("start to get tag fields");
if (pStmt->errCode != TSDB_CODE_SUCCESS) {
return pStmt->errCode;
}
if (STMT_TYPE_QUERY == pStmt->sql.type) {
STMT_ERRI_JRET(TSDB_CODE_TSC_STMT_API_ERROR);
}
STMT_ERRI_JRET(stmtSwitchStatus(pStmt, STMT_FETCH_FIELDS));
if (pStmt->bInfo.needParse && pStmt->sql.runTimes && pStmt->sql.type > 0 &&
STMT_TYPE_MULTI_INSERT != pStmt->sql.type) {
pStmt->bInfo.needParse = false;
}
if (pStmt->exec.pRequest && STMT_TYPE_QUERY == pStmt->sql.type && pStmt->sql.runTimes) {
taos_free_result(pStmt->exec.pRequest);
pStmt->exec.pRequest = NULL;
}
STMT_ERRI_JRET(stmtCreateRequest(pStmt));
if (pStmt->bInfo.needParse) {
STMT_ERRI_JRET(stmtParseSql(pStmt));
}
STMT_ERRI_JRET(stmtFetchTagFields(stmt, nums, fields));
_return:
pStmt->errCode = preCode;
return code;
}
int stmtGetColFields(TAOS_STMT* stmt, int* nums, TAOS_FIELD_E** fields) {
int32_t code = 0;
STscStmt* pStmt = (STscStmt*)stmt;
int32_t preCode = pStmt->errCode;
STMT_DLOG_E("start to get col fields");
if (pStmt->errCode != TSDB_CODE_SUCCESS) {
return pStmt->errCode;
}
if (STMT_TYPE_QUERY == pStmt->sql.type) {
STMT_ERRI_JRET(TSDB_CODE_TSC_STMT_API_ERROR);
}
STMT_ERRI_JRET(stmtSwitchStatus(pStmt, STMT_FETCH_FIELDS));
if (pStmt->bInfo.needParse && pStmt->sql.runTimes && pStmt->sql.type > 0 &&
STMT_TYPE_MULTI_INSERT != pStmt->sql.type) {
pStmt->bInfo.needParse = false;
}
if (pStmt->exec.pRequest && STMT_TYPE_QUERY == pStmt->sql.type && pStmt->sql.runTimes) {
taos_free_result(pStmt->exec.pRequest);
pStmt->exec.pRequest = NULL;
STMT_ERR_RET(stmtCreateRequest(pStmt));
}
STMT_ERRI_JRET(stmtCreateRequest(pStmt));
if (pStmt->bInfo.needParse) {
STMT_ERRI_JRET(stmtParseSql(pStmt));
}
STMT_ERRI_JRET(stmtFetchColFields(stmt, nums, fields));
_return:
pStmt->errCode = preCode;
return code;
}
int stmtGetParamNum(TAOS_STMT* stmt, int* nums) {
int code = 0;
STscStmt* pStmt = (STscStmt*)stmt;
int32_t preCode = pStmt->errCode;
STMT_DLOG_E("start to get param num");
if (pStmt->errCode != TSDB_CODE_SUCCESS) {
return pStmt->errCode;
}
STMT_ERRI_JRET(stmtSwitchStatus(pStmt, STMT_FETCH_FIELDS));
if (pStmt->bInfo.needParse && pStmt->sql.runTimes && pStmt->sql.type > 0 &&
STMT_TYPE_MULTI_INSERT != pStmt->sql.type) {
pStmt->bInfo.needParse = false;
}
if (pStmt->exec.pRequest && STMT_TYPE_QUERY == pStmt->sql.type && pStmt->sql.runTimes) {
taos_free_result(pStmt->exec.pRequest);
pStmt->exec.pRequest = NULL;
}
STMT_ERRI_JRET(stmtCreateRequest(pStmt));
if (pStmt->bInfo.needParse) {
STMT_ERRI_JRET(stmtParseSql(pStmt));
}
if (STMT_TYPE_QUERY == pStmt->sql.type) {
*nums = taosArrayGetSize(pStmt->sql.pQuery->pPlaceholderValues);
} else {
STMT_ERRI_JRET(stmtFetchColFields(stmt, nums, NULL));
}
_return:
pStmt->errCode = preCode;
return code;
}
int stmtGetParam(TAOS_STMT* stmt, int idx, int* type, int* bytes) {
int code = 0;
STscStmt* pStmt = (STscStmt*)stmt;
int32_t preCode = pStmt->errCode;
STMT_DLOG_E("start to get param");
if (pStmt->errCode != TSDB_CODE_SUCCESS) {
return pStmt->errCode;
}
if (STMT_TYPE_QUERY == pStmt->sql.type) {
STMT_ERRI_JRET(TSDB_CODE_TSC_STMT_API_ERROR);
}
STMT_ERRI_JRET(stmtSwitchStatus(pStmt, STMT_FETCH_FIELDS));
if (pStmt->bInfo.needParse && pStmt->sql.runTimes && pStmt->sql.type > 0 &&
STMT_TYPE_MULTI_INSERT != pStmt->sql.type) {
pStmt->bInfo.needParse = false;
}
if (pStmt->exec.pRequest && STMT_TYPE_QUERY == pStmt->sql.type && pStmt->sql.runTimes) {
taos_free_result(pStmt->exec.pRequest);
pStmt->exec.pRequest = NULL;
}
STMT_ERRI_JRET(stmtCreateRequest(pStmt));
if (pStmt->bInfo.needParse) {
STMT_ERRI_JRET(stmtParseSql(pStmt));
}
int32_t nums = 0;
TAOS_FIELD_E* pField = NULL;
STMT_ERRI_JRET(stmtFetchColFields(stmt, &nums, &pField));
if (idx >= nums) {
tscError("idx %d is too big", idx);
STMT_ERRI_JRET(TSDB_CODE_INVALID_PARA);
}
*type = pField[idx].type;
*bytes = calcSchemaBytesFromTypeBytes(pField[idx].type, pField[idx].bytes, true);
_return:
taosMemoryFree(pField);
pStmt->errCode = preCode;
return code;
}
TAOS_RES* stmtUseResult(TAOS_STMT* stmt) {
STscStmt* pStmt = (STscStmt*)stmt;
STMT_DLOG_E("start to use result");
if (STMT_TYPE_QUERY != pStmt->sql.type) {
tscError("useResult only for query statement");
return NULL;
}
return pStmt->exec.pRequest;
}