Merge branch '3.0' of https://github.com/taosdata/TDengine into feat/TD-21898
This commit is contained in:
liuyao
commit
a8b415ed35
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@ -28,13 +28,16 @@ static int32_t saveOneRow(SArray* pRow, SSDataBlock* pBlock, SCacheRowsReader* p
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// bool allNullRow = true;
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if (HASTYPE(pReader->type, CACHESCAN_RETRIEVE_LAST)) {
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uint64_t ts = 0;
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SFirstLastRes* p;
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for (int32_t i = 0; i < pReader->numOfCols; ++i) {
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SColumnInfoData* pColInfoData = taosArrayGet(pBlock->pDataBlock, dstSlotIds[i]);
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SFirstLastRes* p = (SFirstLastRes*)varDataVal(pRes[i]);
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int32_t slotId = slotIds[i];
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SLastCol* pColVal = (SLastCol*)taosArrayGet(pRow, i);
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p = (SFirstLastRes*)varDataVal(pRes[i]);
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p->ts = pColVal->ts;
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ts = p->ts;
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p->isNull = !COL_VAL_IS_VALUE(&pColVal->colVal);
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// allNullRow = p->isNull & allNullRow;
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@ -55,6 +58,20 @@ static int32_t saveOneRow(SArray* pRow, SSDataBlock* pBlock, SCacheRowsReader* p
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varDataSetLen(pRes[i], pColInfoData->info.bytes - VARSTR_HEADER_SIZE);
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colDataSetVal(pColInfoData, numOfRows, (const char*)pRes[i], false);
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}
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for (int32_t idx = 0; idx < taosArrayGetSize(pBlock->pDataBlock); ++idx) {
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SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, idx);
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if (pCol->info.colId == PRIMARYKEY_TIMESTAMP_COL_ID && pCol->info.type == TSDB_DATA_TYPE_TIMESTAMP) {
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colDataSetVal(pCol, numOfRows, (const char*)&ts, false);
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continue;
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}
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if (pReader->numOfCols == 1 && dstSlotIds[0] != idx) {
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if (!p->isNull) {
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colDataSetVal(pCol, numOfRows, p->buf, false);
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} else {
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colDataSetNULL(pCol, numOfRows);
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}
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}
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}
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// pBlock->info.rows += allNullRow ? 0 : 1;
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++pBlock->info.rows;
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@ -191,9 +191,9 @@ SSDataBlock* doScanCache(SOperatorInfo* pOperator) {
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SSDataBlock* pRes = pInfo->pRes;
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if (pInfo->indexOfBufferedRes < pInfo->pBufferredRes->info.rows) {
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for (int32_t i = 0; i < taosArrayGetSize(pInfo->matchInfo.pList); ++i) {
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SColMatchItem* pMatchInfo = taosArrayGet(pInfo->matchInfo.pList, i);
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int32_t slotId = pMatchInfo->dstSlotId;
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for (int32_t i = 0; i < taosArrayGetSize(pInfo->pBufferredRes->pDataBlock); ++i) {
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SColumnInfoData* pCol = taosArrayGet(pInfo->pBufferredRes->pDataBlock, i);
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int32_t slotId = pCol->info.slotId;
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SColumnInfoData* pSrc = taosArrayGet(pInfo->pBufferredRes->pDataBlock, slotId);
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SColumnInfoData* pDst = taosArrayGet(pRes->pDataBlock, slotId);
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@ -201,8 +201,10 @@ SSDataBlock* doScanCache(SOperatorInfo* pOperator) {
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if (colDataIsNull_s(pSrc, pInfo->indexOfBufferedRes)) {
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colDataSetNULL(pDst, 0);
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} else {
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char* p = colDataGetData(pSrc, pInfo->indexOfBufferedRes);
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colDataSetVal(pDst, 0, p, false);
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if (pSrc->pData) {
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char* p = colDataGetData(pSrc, pInfo->indexOfBufferedRes);
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colDataSetVal(pDst, 0, p, false);
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}
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}
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}
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@ -2772,7 +2772,7 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
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{
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.name = "_cache_last",
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.type = FUNCTION_TYPE_CACHE_LAST,
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.classification = FUNC_MGT_AGG_FUNC | FUNC_MGT_MULTI_RES_FUNC | FUNC_MGT_FORBID_STREAM_FUNC | FUNC_MGT_FORBID_SYSTABLE_FUNC,
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.classification = FUNC_MGT_AGG_FUNC | FUNC_MGT_MULTI_RES_FUNC | FUNC_MGT_SELECT_FUNC | FUNC_MGT_FORBID_STREAM_FUNC | FUNC_MGT_FORBID_SYSTABLE_FUNC,
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.translateFunc = translateFirstLast,
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.getEnvFunc = getFirstLastFuncEnv,
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.initFunc = functionSetup,
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@ -2478,6 +2478,27 @@ static bool hasSuitableCache(int8_t cacheLastMode, bool hasLastRow, bool hasLast
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return false;
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}
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/// @brief check if we can apply last row scan optimization
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/// @param lastColNum how many distinct last col specified
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/// @param lastColId only used when lastColNum equals 1, the col id of the only one last col
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/// @param selectNonPKColNum num of normal cols
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/// @param selectNonPKColId only used when selectNonPKColNum equals 1, the col id of the only one select col
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static bool lastRowScanOptCheckColNum(int32_t lastColNum, col_id_t lastColId,
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int32_t selectNonPKColNum, col_id_t selectNonPKColId) {
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// multi select non pk col + last func: select c1, c2, last(c1)
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if (selectNonPKColNum > 1 && lastColNum > 0) return false;
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if (selectNonPKColNum == 1) {
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// select last(c1), last(c2), c1 ...
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// which is not possible currently
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if (lastColNum > 1) return false;
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// select last(c1), c2 ...
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if (lastColNum == 1 && lastColId != selectNonPKColId) return false;
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}
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return true;
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}
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static bool lastRowScanOptMayBeOptimized(SLogicNode* pNode) {
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if (QUERY_NODE_LOGIC_PLAN_AGG != nodeType(pNode) || 1 != LIST_LENGTH(pNode->pChildren) ||
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QUERY_NODE_LOGIC_PLAN_SCAN != nodeType(nodesListGetNode(pNode->pChildren, 0))) {
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@ -2493,9 +2514,10 @@ static bool lastRowScanOptMayBeOptimized(SLogicNode* pNode) {
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return false;
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}
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bool hasLastFunc = false;
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bool hasSelectFunc = false;
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SNode* pFunc = NULL;
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bool hasNonPKSelectFunc = false;
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SNode* pFunc = NULL;
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int32_t lastColNum = 0, selectNonPKColNum = 0;
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col_id_t lastColId = -1, selectNonPKColId = -1;
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FOREACH(pFunc, ((SAggLogicNode*)pNode)->pAggFuncs) {
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SFunctionNode* pAggFunc = (SFunctionNode*)pFunc;
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if (FUNCTION_TYPE_LAST == pAggFunc->funcType) {
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@ -2505,16 +2527,33 @@ static bool lastRowScanOptMayBeOptimized(SLogicNode* pNode) {
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if (pCol->colType != COLUMN_TYPE_COLUMN) {
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return false;
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}
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if (lastColId != pCol->colId) {
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lastColId = pCol->colId;
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lastColNum++;
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}
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}
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if (hasSelectFunc || QUERY_NODE_VALUE == nodeType(nodesListGetNode(pAggFunc->pParameterList, 0))) {
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if (QUERY_NODE_VALUE == nodeType(nodesListGetNode(pAggFunc->pParameterList, 0))) {
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return false;
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}
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hasLastFunc = true;
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if (!lastRowScanOptCheckColNum(lastColNum, lastColId, selectNonPKColNum, selectNonPKColId))
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return false;
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} else if (FUNCTION_TYPE_SELECT_VALUE == pAggFunc->funcType) {
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if (hasLastFunc) {
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SNode* pParam = nodesListGetNode(pAggFunc->pParameterList, 0);
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if (QUERY_NODE_COLUMN == nodeType(pParam)) {
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SColumnNode* pCol = (SColumnNode*)pParam;
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if (PRIMARYKEY_TIMESTAMP_COL_ID != pCol->colId) {
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if (selectNonPKColId != pCol->colId) {
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selectNonPKColId = pCol->colId;
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selectNonPKColNum++;
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}
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} else {
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continue;
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}
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} else if (lastColNum > 0) {
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return false;
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}
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hasSelectFunc = true;
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if (!lastRowScanOptCheckColNum(lastColNum, lastColId, selectNonPKColNum, selectNonPKColId))
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return false;
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} else if (FUNCTION_TYPE_GROUP_KEY == pAggFunc->funcType) {
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if (!lastRowScanOptLastParaIsTag(nodesListGetNode(pAggFunc->pParameterList, 0))) {
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return false;
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@ -2581,6 +2620,9 @@ static int32_t lastRowScanOptimize(SOptimizeContext* pCxt, SLogicSubplan* pLogic
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SLastRowScanOptSetColDataTypeCxt cxt = {.doAgg = true, .pLastCols = NULL};
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SNode* pNode = NULL;
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SColumnNode* pPKTsCol = NULL;
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SColumnNode* pNonPKCol = NULL;
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FOREACH(pNode, pAgg->pAggFuncs) {
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SFunctionNode* pFunc = (SFunctionNode*)pNode;
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int32_t funcType = pFunc->funcType;
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@ -2597,6 +2639,16 @@ static int32_t lastRowScanOptimize(SOptimizeContext* pCxt, SLogicSubplan* pLogic
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nodesWalkExpr(nodesListGetNode(pFunc->pParameterList, 0), lastRowScanOptSetColDataType, &cxt);
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nodesListErase(pFunc->pParameterList, nodesListGetCell(pFunc->pParameterList, 1));
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}
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} else if (FUNCTION_TYPE_SELECT_VALUE == funcType) {
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pNode = nodesListGetNode(pFunc->pParameterList, 0);
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if (nodeType(pNode) == QUERY_NODE_COLUMN) {
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SColumnNode* pCol = (SColumnNode*)pNode;
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if (pCol->colId == PRIMARYKEY_TIMESTAMP_COL_ID) {
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pPKTsCol = pCol;
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} else {
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pNonPKCol = pCol;
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}
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}
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}
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}
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@ -2608,6 +2660,16 @@ static int32_t lastRowScanOptimize(SOptimizeContext* pCxt, SLogicSubplan* pLogic
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lastRowScanOptSetLastTargets(pScan->pScanCols, cxt.pLastCols, true);
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nodesWalkExprs(pScan->pScanPseudoCols, lastRowScanOptSetColDataType, &cxt);
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lastRowScanOptSetLastTargets(pScan->node.pTargets, cxt.pLastCols, false);
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if (pPKTsCol && pScan->node.pTargets->length == 1) {
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// when select last(ts),ts from ..., we add another ts to targets
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sprintf(pPKTsCol->colName, "#sel_val.%p", pPKTsCol);
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nodesListAppend(pScan->node.pTargets, nodesCloneNode((SNode*)pPKTsCol));
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}
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if (pNonPKCol && cxt.pLastCols->length == 1 && nodesEqualNode((SNode*)pNonPKCol, nodesListGetNode(cxt.pLastCols, 0))) {
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// when select last(c1), c1 from ..., we add c1 to targets
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sprintf(pNonPKCol->colName, "#sel_val.%p", pNonPKCol);
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nodesListAppend(pScan->node.pTargets, nodesCloneNode((SNode*)pNonPKCol));
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}
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nodesClearList(cxt.pLastCols);
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}
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pAgg->hasLastRow = false;
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@ -69,6 +69,10 @@
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,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/func_to_char_timestamp.py -Q 2
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,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/func_to_char_timestamp.py -Q 3
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,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/func_to_char_timestamp.py -Q 4
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,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/last_cache_scan.py
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,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/last_cache_scan.py -Q 2
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,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/last_cache_scan.py -Q 3
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,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/last_cache_scan.py -Q 4
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,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/tmqShow.py
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,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/tmqDropStb.py
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,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/subscribeStb0.py
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@ -0,0 +1,298 @@
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import taos
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import sys
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import time
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import socket
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import os
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import threading
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import math
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from datetime import datetime
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from util.log import *
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from util.sql import *
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from util.cases import *
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from util.dnodes import *
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from util.common import *
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# from tmqCommon import *
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COMPARE_DATA = 0
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COMPARE_LEN = 1
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class TDTestCase:
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def __init__(self):
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self.vgroups = 4
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self.ctbNum = 10
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self.rowsPerTbl = 10000
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self.duraion = '1h'
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def init(self, conn, logSql, replicaVar=1):
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self.replicaVar = int(replicaVar)
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tdLog.debug(f"start to excute {__file__}")
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tdSql.init(conn.cursor(), False)
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def create_database(self,tsql, dbName,dropFlag=1,vgroups=2,replica=1, duration:str='1d'):
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if dropFlag == 1:
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tsql.execute("drop database if exists %s"%(dbName))
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tsql.execute("create database if not exists %s vgroups %d replica %d duration %s CACHEMODEL 'both'"%(dbName, vgroups, replica, duration))
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tdLog.debug("complete to create database %s"%(dbName))
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return
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def create_stable(self,tsql, paraDict):
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colString = tdCom.gen_column_type_str(colname_prefix=paraDict["colPrefix"], column_elm_list=paraDict["colSchema"])
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tagString = tdCom.gen_tag_type_str(tagname_prefix=paraDict["tagPrefix"], tag_elm_list=paraDict["tagSchema"])
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sqlString = f"create table if not exists %s.%s (%s) tags (%s)"%(paraDict["dbName"], paraDict["stbName"], colString, tagString)
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tdLog.debug("%s"%(sqlString))
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tsql.execute(sqlString)
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return
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def create_ctable(self,tsql=None, dbName='dbx',stbName='stb',ctbPrefix='ctb',ctbNum=1,ctbStartIdx=0):
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for i in range(ctbNum):
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sqlString = "create table %s.%s%d using %s.%s tags(%d, 'tb%d', 'tb%d', %d, %d, %d)" % \
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(dbName,ctbPrefix,i+ctbStartIdx,dbName,stbName,(i+ctbStartIdx) % 5,i+ctbStartIdx,i+ctbStartIdx,i+ctbStartIdx,i+ctbStartIdx,i+ctbStartIdx)
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tsql.execute(sqlString)
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tdLog.debug("complete to create %d child tables by %s.%s" %(ctbNum, dbName, stbName))
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return
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def insert_data(self,tsql,dbName,ctbPrefix,ctbNum,rowsPerTbl,batchNum,startTs,tsStep):
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tdLog.debug("start to insert data ............")
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tsql.execute("use %s" %dbName)
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pre_insert = "insert into "
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sql = pre_insert
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for i in range(ctbNum):
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rowsBatched = 0
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sql += " %s%d values "%(ctbPrefix,i)
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for j in range(rowsPerTbl):
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if (i < ctbNum/2):
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sql += "(%d, %d, %d, %d,%d,%d,%d,true,'binary%d', 'nchar%d', %d) "%(startTs + j*tsStep, j%1000, j%500, j%1000, j%5000, j%5400, j%128, j%10000, j%1000, startTs+j*tsStep+1000)
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else:
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sql += "(%d, %d, NULL, %d,NULL,%d,%d,true,'binary%d', 'nchar%d', %d) "%(startTs + j*tsStep, j%1000, j%500, j%1000, j%128, j%10000, j%1000, startTs + j*tsStep + 1000)
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rowsBatched += 1
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if ((rowsBatched == batchNum) or (j == rowsPerTbl - 1)):
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tsql.execute(sql)
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rowsBatched = 0
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if j < rowsPerTbl - 1:
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sql = "insert into %s%d values " %(ctbPrefix,i)
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else:
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sql = "insert into "
|
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if sql != pre_insert:
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tsql.execute(sql)
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tdLog.debug("insert data ............ [OK]")
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return
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def prepareTestEnv(self):
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tdLog.printNoPrefix("======== prepare test env include database, stable, ctables, and insert data: ")
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paraDict = {'dbName': 'test',
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'dropFlag': 1,
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'vgroups': 2,
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'stbName': 'meters',
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'colPrefix': 'c',
|
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'tagPrefix': 't',
|
||||
'colSchema': [{'type': 'INT', 'count':1},
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{'type': 'BIGINT', 'count':1},
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{'type': 'FLOAT', 'count':1},
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||||
{'type': 'DOUBLE', 'count':1},
|
||||
{'type': 'smallint', 'count':1},
|
||||
{'type': 'tinyint', 'count':1},
|
||||
{'type': 'bool', 'count':1},
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||||
{'type': 'binary', 'len':10, 'count':1},
|
||||
{'type': 'nchar', 'len':10, 'count':1},
|
||||
{'type': 'timestamp', 'count':1}],
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'tagSchema': [{'type': 'INT', 'count':1},{'type': 'nchar', 'len':20, 'count':1},{'type': 'binary', 'len':20, 'count':1},{'type': 'BIGINT', 'count':1},{'type': 'smallint', 'count':1},{'type': 'DOUBLE', 'count':1}],
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'ctbPrefix': 't',
|
||||
'ctbStartIdx': 0,
|
||||
'ctbNum': 100,
|
||||
'rowsPerTbl': 10000,
|
||||
'batchNum': 3000,
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'startTs': 1537146000000,
|
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'tsStep': 600000}
|
||||
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paraDict['vgroups'] = self.vgroups
|
||||
paraDict['ctbNum'] = self.ctbNum
|
||||
paraDict['rowsPerTbl'] = self.rowsPerTbl
|
||||
|
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tdLog.info("create database")
|
||||
self.create_database(tsql=tdSql, dbName=paraDict["dbName"], dropFlag=paraDict["dropFlag"], vgroups=paraDict["vgroups"], replica=self.replicaVar, duration=self.duraion)
|
||||
|
||||
tdLog.info("create stb")
|
||||
self.create_stable(tsql=tdSql, paraDict=paraDict)
|
||||
|
||||
tdLog.info("create child tables")
|
||||
self.create_ctable(tsql=tdSql, dbName=paraDict["dbName"], \
|
||||
stbName=paraDict["stbName"],ctbPrefix=paraDict["ctbPrefix"],\
|
||||
ctbNum=paraDict["ctbNum"],ctbStartIdx=paraDict["ctbStartIdx"])
|
||||
self.insert_data(tsql=tdSql, dbName=paraDict["dbName"],\
|
||||
ctbPrefix=paraDict["ctbPrefix"],ctbNum=paraDict["ctbNum"],\
|
||||
rowsPerTbl=paraDict["rowsPerTbl"],batchNum=paraDict["batchNum"],\
|
||||
startTs=paraDict["startTs"],tsStep=paraDict["tsStep"])
|
||||
return
|
||||
|
||||
def check_explain_res_has_row(self, plan_str_expect: str, rows, sql):
|
||||
plan_found = False
|
||||
for row in rows:
|
||||
if str(row).find(plan_str_expect) >= 0:
|
||||
tdLog.debug("plan: [%s] found in: [%s]" % (plan_str_expect, str(row)))
|
||||
plan_found = True
|
||||
break
|
||||
if not plan_found:
|
||||
tdLog.exit("plan: %s not found in res: [%s] in sql: %s" % (plan_str_expect, str(rows), sql))
|
||||
|
||||
def check_explain_res_no_row(self, plan_str_not_expect: str, res, sql):
|
||||
for row in res:
|
||||
if str(row).find(plan_str_not_expect) >= 0:
|
||||
tdLog.exit('plan: [%s] found in: [%s] for sql: %s' % (plan_str_not_expect, str(row), sql))
|
||||
|
||||
def explain_sql(self, sql: str):
|
||||
sql = "explain verbose true " + sql
|
||||
tdSql.query(sql, queryTimes=1)
|
||||
return tdSql.queryResult
|
||||
|
||||
def explain_and_check_res(self, sqls, hasLastRowScanRes):
|
||||
for sql, has_last in zip(sqls, hasLastRowScanRes):
|
||||
res = self.explain_sql(sql)
|
||||
if has_last == 1:
|
||||
self.check_explain_res_has_row("Last Row Scan", res, sql)
|
||||
else:
|
||||
self.check_explain_res_no_row("Last Row Scan", res, sql)
|
||||
|
||||
def format_sqls(self, sql_template, select_items):
|
||||
sqls = []
|
||||
for item in select_items:
|
||||
sqls.append(sql_template % item)
|
||||
return sqls
|
||||
|
||||
def query_check_one(self, sql, res_expect):
|
||||
if res_expect is not None:
|
||||
tdSql.query(sql, queryTimes=1)
|
||||
tdSql.checkRows(1)
|
||||
for i in range(0, tdSql.queryCols):
|
||||
tdSql.checkData(0, i, res_expect[i])
|
||||
tdLog.info('%s check res col: %d succeed value: %s' % (sql, i, str(res_expect[i])))
|
||||
|
||||
def query_check_sqls(self, sqls, has_last_row_scan_res, res_expect):
|
||||
for sql, has_last, res in zip(sqls, has_last_row_scan_res, res_expect):
|
||||
if has_last == 1:
|
||||
self.query_check_one(sql, res)
|
||||
|
||||
def test_last_cache_scan(self):
|
||||
sql_template = 'select %s from meters'
|
||||
select_items = [
|
||||
"last(ts), ts", "last(ts), c1", "last(ts), c2", "last(ts), c3",\
|
||||
"last(ts), c4", "last(ts), tbname", "last(ts), t1", "last(ts), ts, ts"]
|
||||
has_last_row_scan_res = [1, 0, 0, 0, 0, 0, 0, 1]
|
||||
res_expect = [
|
||||
["2018-11-25 19:30:00.000", "2018-11-25 19:30:00.000"],
|
||||
None, None, None, None, None, None,
|
||||
["2018-11-25 19:30:00.000", "2018-11-25 19:30:00.000", "2018-11-25 19:30:00.000"]
|
||||
]
|
||||
sqls = self.format_sqls(sql_template, select_items)
|
||||
self.explain_and_check_res(sqls, has_last_row_scan_res)
|
||||
self.query_check_sqls(sqls, has_last_row_scan_res, res_expect)
|
||||
|
||||
select_items = ["last(c1),ts", "last(c1), c1", "last(c1), c2", "last(c1), c3",\
|
||||
"last(c1), c4", "last(c1), tbname", "last(c1), t1", "last(c1), ts, ts", "last(c1), c1, c1"]
|
||||
has_last_row_scan_res = [1, 1, 0, 0, 0, 0, 0, 1, 1]
|
||||
res_expect = [
|
||||
[999, "2018-11-25 19:30:00.000"],
|
||||
[999, 999], None, None, None, None, None,
|
||||
[999, "2018-11-25 19:30:00.000", "2018-11-25 19:30:00.000"],
|
||||
[999,999,999]
|
||||
]
|
||||
sqls = self.format_sqls(sql_template, select_items)
|
||||
self.explain_and_check_res(sqls, has_last_row_scan_res)
|
||||
self.query_check_sqls(sqls, has_last_row_scan_res, res_expect)
|
||||
|
||||
sql_template = 'select %s from t1'
|
||||
select_items = ["last(c4),ts", "last(c4), c1", "last(c4), c2", "last(c4), c3",\
|
||||
"last(c4), c4", "last(c4), tbname", "last(c4), t1"]
|
||||
has_last_row_scan_res = [1, 0, 0, 0, 1, 0, 0]
|
||||
res_expect = [
|
||||
[4999.000000000000000, "2018-11-25 19:30:00.000"],
|
||||
None,None,None,
|
||||
[4999.000000000000000, 4999.000000000000000]
|
||||
]
|
||||
sqls = self.format_sqls(sql_template, select_items)
|
||||
self.explain_and_check_res(sqls, has_last_row_scan_res)
|
||||
self.query_check_sqls(sqls, has_last_row_scan_res, res_expect)
|
||||
|
||||
sql_template = 'select %s from meters'
|
||||
select_items = ["last(c8), ts", "last(c8), c1", "last(c8), c8", "last(c8), tbname", \
|
||||
"last(c8), t1", "last(c8), c8, c8", "last(c8), ts, ts"]
|
||||
has_last_row_scan_res = [1, 0, 1, 0, 0, 1, 1]
|
||||
res_expect = [
|
||||
["binary9999", "2018-11-25 19:30:00.000"],
|
||||
None,
|
||||
["binary9999", "binary9999"],
|
||||
None, None,
|
||||
["binary9999", "binary9999", "binary9999"],
|
||||
["binary9999", "2018-11-25 19:30:00.000", "2018-11-25 19:30:00.000"]
|
||||
]
|
||||
sqls = self.format_sqls(sql_template, select_items)
|
||||
self.explain_and_check_res(sqls, has_last_row_scan_res)
|
||||
self.query_check_sqls(sqls, has_last_row_scan_res, res_expect)
|
||||
|
||||
# c2, c4 in last row of t5,t6,t7,t8,t9 will always be NULL
|
||||
sql_template = 'select %s from t5'
|
||||
select_items = ["last(c4), ts", "last(c4), c4", "last(c4), c4, c4", "last(c4), ts, ts"]
|
||||
has_last_row_scan_res = [1,1,1,1]
|
||||
|
||||
sqls = self.format_sqls(sql_template, select_items)
|
||||
self.explain_and_check_res(sqls, has_last_row_scan_res)
|
||||
#for sql in sqls:
|
||||
#tdSql.query(sql, queryTimes=1)
|
||||
#tdSql.checkRows(0)
|
||||
|
||||
sql_template = 'select %s from meters'
|
||||
select_items = [
|
||||
"last_row(ts), last(ts)",
|
||||
"last_row(c1), last(c1)",
|
||||
"last_row(c1), c1,c3, ts"
|
||||
]
|
||||
has_last_row_scan_res = [0,0,1]
|
||||
sqls = self.format_sqls(sql_template, select_items)
|
||||
self.explain_and_check_res(sqls, has_last_row_scan_res)
|
||||
#res_expect = [None, None, [999, 999, 499, "2018-11-25 19:30:00.000"]]
|
||||
#self.query_check_sqls(sqls, has_last_row_scan_res, res_expect)
|
||||
|
||||
select_items = ["last(c10), c10",
|
||||
"last(c10), ts",
|
||||
"last(c10), c10, ts",
|
||||
"last(c10), c10, ts, c10,ts",
|
||||
"last(c10), ts, c1"]
|
||||
has_last_row_scan_res = [1,1,1,1,0]
|
||||
sqls = self.format_sqls(sql_template, select_items)
|
||||
self.explain_and_check_res(sqls, has_last_row_scan_res)
|
||||
res_expect = [
|
||||
["2018-11-25 19:30:01.000", "2018-11-25 19:30:01.000"],
|
||||
["2018-11-25 19:30:01.000", "2018-11-25 19:30:00.000"],
|
||||
["2018-11-25 19:30:01.000", "2018-11-25 19:30:01.000", "2018-11-25 19:30:00.000"],
|
||||
["2018-11-25 19:30:01.000", "2018-11-25 19:30:01.000", "2018-11-25 19:30:00.000", "2018-11-25 19:30:01.000", "2018-11-25 19:30:00.000"]
|
||||
]
|
||||
self.query_check_sqls(sqls, has_last_row_scan_res, res_expect)
|
||||
|
||||
sql = "select last(c1), c1, c1+1, c1+2, ts from meters"
|
||||
res = self.explain_sql(sql)
|
||||
self.check_explain_res_has_row("Last Row Scan", res, sql)
|
||||
|
||||
tdSql.query(sql)
|
||||
tdSql.checkRows(1)
|
||||
tdSql.checkData(0, 0, 999)
|
||||
tdSql.checkData(0, 1, 999)
|
||||
tdSql.checkData(0, 2, 1000)
|
||||
tdSql.checkData(0, 3, 1001)
|
||||
tdSql.checkData(0, 4, "2018-11-25 19:30:00.000")
|
||||
|
||||
def run(self):
|
||||
self.prepareTestEnv()
|
||||
#time.sleep(99999999)
|
||||
self.test_last_cache_scan()
|
||||
|
||||
def stop(self):
|
||||
tdSql.close()
|
||||
tdLog.success(f"{__file__} successfully executed")
|
||||
|
||||
event = threading.Event()
|
||||
|
||||
tdCases.addLinux(__file__, TDTestCase())
|
||||
tdCases.addWindows(__file__, TDTestCase())
|
||||
Loading…
Reference in New Issue