On Fri, Jul 9, 2021 at 8:28 AM David Rowley wrote:
> On Sat, 10 Jul 2021 at 03:15, Zhihong Yu wrote:
> > I was looking at find_hash_columns() in nodeAgg.c
> >
> > It seems the first loop tries to determine the max column number needed,
> along with whether all columns are needed.
> >
> > The loo
On Sat, 10 Jul 2021 at 03:15, Zhihong Yu wrote:
> I was looking at find_hash_columns() in nodeAgg.c
>
> It seems the first loop tries to determine the max column number needed,
> along with whether all columns are needed.
>
> The loop can be re-written as shown in the patch.
This runs during Exe
Hi,
I was looking at find_hash_columns() in nodeAgg.c
It seems the first loop tries to determine the max column number needed,
along with whether all columns are needed.
The loop can be re-written as shown in the patch.
In normal cases, we don't need to perform scanDesc->natts iterations.
In bes
