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feat(query): enable selectivity with first/last for stable

This commit is contained in:
Ganlin Zhao 2022-06-28 20:46:45 +08:00
parent d91443ce71
commit c3d26dc73e
2 changed files with 23 additions and 9 deletions
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24
source/libs/function/src/builtinsimpl.c
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@ -2409,11 +2409,11 @@ int32_t apercentileCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx)
return TSDB_CODE_SUCCESS; return TSDB_CODE_SUCCESS;
} }
int32_t getFirstLastInfoSize(int32_t resBytes) { return sizeof(SFirstLastRes) + resBytes + sizeof(int64_t); } int32_t getFirstLastInfoSize(int32_t resBytes) { return sizeof(SFirstLastRes) + resBytes + sizeof(int64_t) + sizeof(STuplePos); }
bool getFirstLastFuncEnv(SFunctionNode* pFunc, SFuncExecEnv* pEnv) { bool getFirstLastFuncEnv(SFunctionNode* pFunc, SFuncExecEnv* pEnv) {
SColumnNode* pNode = (SColumnNode*)nodesListGetNode(pFunc->pParameterList, 0); SColumnNode* pNode = (SColumnNode*)nodesListGetNode(pFunc->pParameterList, 0);
pEnv->calcMemSize = sizeof(SFirstLastRes) + pNode->node.resType.bytes + sizeof(int64_t) + sizeof(STuplePos); pEnv->calcMemSize = getFirstLastInfoSize(pNode->node.resType.bytes);
return true; return true;
} }
@ -2642,7 +2642,10 @@ int32_t lastFunction(SqlFunctionCtx* pCtx) {
return TSDB_CODE_SUCCESS; return TSDB_CODE_SUCCESS;
} }
static void firstLastTransferInfo(SFirstLastRes* pInput, SFirstLastRes* pOutput, bool isFirst) { static void firstLastTransferInfo(SqlFunctionCtx* pCtx, SFirstLastRes* pInput, SFirstLastRes* pOutput, bool isFirst) {
SInputColumnInfoData* pColInfo = &pCtx->input;
int32_t start = pColInfo->startRowIndex;
pOutput->bytes = pInput->bytes; pOutput->bytes = pInput->bytes;
TSKEY* tsIn = (TSKEY*)(pInput->buf + pInput->bytes); TSKEY* tsIn = (TSKEY*)(pInput->buf + pInput->bytes);
TSKEY* tsOut = (TSKEY*)(pOutput->buf + pInput->bytes); TSKEY* tsOut = (TSKEY*)(pOutput->buf + pInput->bytes);
@ -2659,7 +2662,14 @@ static void firstLastTransferInfo(SFirstLastRes* pInput, SFirstLastRes* pOutput,
} }
*tsOut = *tsIn; *tsOut = *tsIn;
memcpy(pOutput->buf, pInput->buf, pOutput->bytes); memcpy(pOutput->buf, pInput->buf, pOutput->bytes);
pOutput->hasResult = true; //handle selectivity
STuplePos* pTuplePos = (STuplePos*)(pOutput->buf + pOutput->bytes + sizeof(TSKEY));
if (!pOutput->hasResult) {
saveTupleData(pCtx, start, pCtx->pSrcBlock, pTuplePos);
pOutput->hasResult = true;
} else {
copyTupleData(pCtx, start, pCtx->pSrcBlock, pTuplePos);
}
return; return;
} }
@ -2674,7 +2684,7 @@ static int32_t firstLastFunctionMergeImpl(SqlFunctionCtx* pCtx, bool isFirstQuer
char* data = colDataGetData(pCol, start); char* data = colDataGetData(pCol, start);
SFirstLastRes* pInputInfo = (SFirstLastRes*)varDataVal(data); SFirstLastRes* pInputInfo = (SFirstLastRes*)varDataVal(data);
firstLastTransferInfo(pInputInfo, pInfo, isFirstQuery); firstLastTransferInfo(pCtx, pInputInfo, pInfo, isFirstQuery);
int32_t numOfElems = pInputInfo->hasResult ? 1 : 0; int32_t numOfElems = pInputInfo->hasResult ? 1 : 0;
@ -2696,6 +2706,7 @@ int32_t firstLastFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
SFirstLastRes* pRes = GET_ROWCELL_INTERBUF(pResInfo); SFirstLastRes* pRes = GET_ROWCELL_INTERBUF(pResInfo);
colDataAppend(pCol, pBlock->info.rows, pRes->buf, pResInfo->isNullRes); colDataAppend(pCol, pBlock->info.rows, pRes->buf, pResInfo->isNullRes);
//handle selectivity
STuplePos* pTuplePos = (STuplePos*)(pRes->buf + pRes->bytes + sizeof(TSKEY)); STuplePos* pTuplePos = (STuplePos*)(pRes->buf + pRes->bytes + sizeof(TSKEY));
setSelectivityValue(pCtx, pBlock, pTuplePos, pBlock->info.rows); setSelectivityValue(pCtx, pBlock, pTuplePos, pBlock->info.rows);
@ -2716,6 +2727,9 @@ int32_t firstLastPartialFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, slotId); SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, slotId);
colDataAppend(pCol, pBlock->info.rows, res, false); colDataAppend(pCol, pBlock->info.rows, res, false);
//handle selectivity
STuplePos* pTuplePos = (STuplePos*)(pRes->buf + pRes->bytes + sizeof(TSKEY));
setSelectivityValue(pCtx, pBlock, pTuplePos, pBlock->info.rows);
taosMemoryFree(res); taosMemoryFree(res);
return 1; return 1;