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fix(query): set null for empty min/max

This commit is contained in:
Haojun Liao 2022-06-03 11:14:30 +08:00
parent a2150d87b9
commit f1bcfb309d
1 changed files with 6 additions and 5 deletions
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11
source/libs/function/src/builtinsimpl.c
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@ -1324,13 +1324,11 @@ int32_t minmaxFunctionFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
SMinmaxResInfo* pRes = GET_ROWCELL_INTERBUF(pEntryInfo);
int32_t type = pCtx->input.pData[0]->info.type;
int32_t slotId = pCtx->pExpr->base.resSchema.slotId;
int32_t currentRow = pBlock->info.rows;
SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, slotId);
// todo assign the tag value
int32_t currentRow = pBlock->info.rows;
pEntryInfo->isNullRes = (pEntryInfo->numOfRes == 0);
if (pCol->info.type == TSDB_DATA_TYPE_FLOAT) {
float v = *(double*) &pRes->v;
@ -1339,7 +1337,10 @@ int32_t minmaxFunctionFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
colDataAppend(pCol, currentRow, (const char*)&pRes->v, pEntryInfo->isNullRes);
}
setSelectivityValue(pCtx, pBlock, &pRes->tuplePos, currentRow);
if (pEntryInfo->numOfRes > 0) {
setSelectivityValue(pCtx, pBlock, &pRes->tuplePos, currentRow);
}
return pEntryInfo->numOfRes;
}