| From: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
|---|---|
| To: | Michael Paquier <michael(at)paquier(dot)xyz> |
| Cc: | Greg Stark <stark(at)mit(dot)edu>, Alexey Bashtanov <bashtanov(at)imap(dot)cc>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: don't allocate HashAgg hash tables when running explain only |
| Date: | 2020-11-20 13:30:53 |
| Message-ID: | f4e9a809-9404-0706-efd9-f4d1f212fee7@iki.fi |
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| Lists: | pgsql-hackers |
On 20/11/2020 08:31, Michael Paquier wrote:
> On Thu, Nov 19, 2020 at 08:47:51AM +0200, Heikki Linnakangas wrote:
>> Yeah, I believe it's always been like that. Yeah, arguably it should be
>> backpatched. I felt conservative and didn't backpatch, but feel free to do
>> it if you think it should be.
>
> +1 for a backpatch. The difference in runtime for EXPLAIN in this case
> is quite something.
That's two votes for backpatching. Ok, I'll go do it.
- Heikki
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