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add histogram partial/merge function

This commit is contained in:
Ganlin Zhao 2022-06-08 18:40:16 +08:00
parent 081a8a62b2
commit c07bea7ff5
1 changed files with 42 additions and 3 deletions
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45
source/libs/function/src/builtinsimpl.c
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@ -2187,9 +2187,7 @@ int32_t apercentilePartialFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
SResultRowEntryInfo* pResInfo = GET_RES_INFO(pCtx);
SAPercentileInfo* pInfo = (SAPercentileInfo*)GET_ROWCELL_INTERBUF(pResInfo);
int32_t bytesHist = (int32_t)(sizeof(SAPercentileInfo) + sizeof(SHistogramInfo) + sizeof(SHistBin) * (MAX_HISTOGRAM_BIN + 1));
int32_t bytesDigest = (int32_t)(sizeof(SAPercentileInfo) + TDIGEST_SIZE(COMPRESSION));
int32_t resultBytes = TMAX(bytesHist, bytesDigest);
int32_t resultBytes = getApercentileMaxSize();
char *res = taosMemoryCalloc(resultBytes + VARSTR_HEADER_SIZE, sizeof(char));
if (pInfo->algo == APERCT_ALGO_TDIGEST) {
@ -3332,6 +3330,29 @@ int32_t histogramFunction(SqlFunctionCtx *pCtx) {
return TSDB_CODE_SUCCESS;
}
int32_t histogramFunctionMerge(SqlFunctionCtx *pCtx) {
SInputColumnInfoData* pInput = &pCtx->input;
SColumnInfoData* pCol = pInput->pData[0];
ASSERT(pCol->info.type == TSDB_DATA_TYPE_BINARY);
SHistoFuncInfo* pInfo = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
int32_t start = pInput->startRowIndex;
char* data = colDataGetData(pCol, start);
SHistoFuncInfo* pInputInfo = (SHistoFuncInfo *)varDataVal(data);
pInfo->normalized = pInputInfo->normalized;
pInfo->numOfBins = pInputInfo->numOfBins;
pInfo->totalCount += pInputInfo->totalCount;
for (int32_t k = 0; k < pInfo->numOfBins; ++k) {
pInfo->bins[k].count += pInputInfo->bins[k].count;
}
SET_VAL(GET_RES_INFO(pCtx), 1, 1);
return TSDB_CODE_SUCCESS;
}
int32_t histogramFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
SResultRowEntryInfo* pResInfo = GET_RES_INFO(pCtx);
SHistoFuncInfo* pInfo = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
@ -3368,6 +3389,24 @@ int32_t histogramFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
return pResInfo->numOfRes;
}
int32_t histogramPartialFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
SResultRowEntryInfo* pResInfo = GET_RES_INFO(pCtx);
SHistoFuncInfo* pInfo = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
int32_t resultBytes = getHistogramInfoSize();
char *res = taosMemoryCalloc(resultBytes + VARSTR_HEADER_SIZE, sizeof(char));
memcpy(varDataVal(res), pInfo, resultBytes);
varDataSetLen(res, resultBytes);
int32_t slotId = pCtx->pExpr->base.resSchema.slotId;
SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, slotId);
colDataAppend(pCol, pBlock->info.rows, res, false);
taosMemoryFree(res);
return pResInfo->numOfRes;
}
bool getHLLFuncEnv(SFunctionNode* UNUSED_PARAM(pFunc), SFuncExecEnv* pEnv) {
pEnv->calcMemSize = sizeof(SHLLInfo);
return true;