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fix(query): fix stddev function floating point NaN value 

TD-16656
This commit is contained in:
Ganlin Zhao 2022-06-20 11:25:54 +08:00
parent 3599b26526
commit a79f4a6ec7
1 changed files with 3 additions and 3 deletions
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4
source/libs/function/src/builtinsimpl.c
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@ -1745,10 +1745,10 @@ int32_t stddevFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
if (IS_INTEGER_TYPE(type)) { if (IS_INTEGER_TYPE(type)) {
avg = pStddevRes->isum / ((double)pStddevRes->count); avg = pStddevRes->isum / ((double)pStddevRes->count);
pStddevRes->result = sqrt(pStddevRes->quadraticISum / ((double)pStddevRes->count) - avg * avg); pStddevRes->result = sqrt(fabs(pStddevRes->quadraticISum / ((double)pStddevRes->count) - avg * avg));
} else { } else {
avg = pStddevRes->dsum / ((double)pStddevRes->count); avg = pStddevRes->dsum / ((double)pStddevRes->count);
pStddevRes->result = sqrt(pStddevRes->quadraticDSum / ((double)pStddevRes->count) - avg * avg); pStddevRes->result = sqrt(fabs(pStddevRes->quadraticDSum / ((double)pStddevRes->count) - avg * avg));
} }
return functionFinalize(pCtx, pBlock); return functionFinalize(pCtx, pBlock);