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Fix another 0 count error in dropValue

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mariadb-AndreyPiskunov
2022-09-09 21:34:20 +03:00
committed by Leonid Fedorov
parent e7cab8445c
commit 680633a350
9 changed files with 160 additions and 87 deletions
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19
utils/regr/regr_syy.cpp
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@ -158,11 +158,18 @@ mcsv1_UDAF::ReturnCode regr_syy::dropValue(mcsv1Context* context, ColumnDatum* v
long double cyPrev = data->cy;
--data->cnt;
uint64_t cnt = data->cnt;
long double dy = valy - avgyPrev;
avgyPrev -= dy / cnt;
cyPrev -= dy * (valy - avgyPrev);
data->avgy = avgyPrev;
data->cy = cyPrev;
if (cnt == 0)
{
data->avgy = 0;
data->cx = 0;
}
else
{
long double dy = valy - avgyPrev;
avgyPrev -= dy / cnt;
cyPrev -= dy * (valy - avgyPrev);
data->avgy = avgyPrev;
data->cy = cyPrev;
}
return mcsv1_UDAF::SUCCESS;
}