Re: SupportRequestRows support function for generate_series_timestamptz

On Sun, 14 Apr 2024 at 15:14, David Rowley <dgrowleyml(at)gmail(dot)com> wrote:
> I had some spare time today, so wrote a patch, which gives you:
>
> postgres=# explain analyze select * from generate_series('2024-01-01',
> '2025-01-01', interval '1 day');
> QUERY PLAN
> ------------------------------------------------------------------------------------------------------------------
> Function Scan on generate_series (cost=0.00..3.67 rows=367 width=8)
> (actual time=0.258..0.291 rows=367 loops=1)

Here's v2 of the patch with some added regression tests.

I did this by writing a plpgsql function named explain_mask_costs()
which has various boolean parameters to mask out the various portions
of the costs. I wondered if this function should live somewhere else
as it seems applicable to more than just misc_functions.sql. Maybe
test_setup.sql. I'll leave where it is for now unless anyone thinks
differently.

This is a fairly simple and seemingly non-controversial patch. I plan
to push it in the next few days unless there's some feedback before
then.

David