Dear list,
when debugging slow queries in a larger application (https://www.gnumed.de) I
started to use auto_explain.
The "normal" EXPLAIN warns
https://www.postgresql.org/docs/current/sql-explain.html
that ANALYZE on INSERT/UPDATE/DELETE will (of course, in hindsight) modify
rows. Now, the
On Thu, Aug 3, 2023 at 9:29 AM Karsten Hilbert
wrote:
> https://www.postgresql.org/docs/current/auto-explain.html
>
> don't explicitely state that it does so, too. Nor can I read impliciteness
> that
> "normal" EXPLAIN is *run* by auto_explain.
>
auto_explain automatically produces the explain
Hi,
On Thu, Aug 03, 2023 at 09:45:39PM +0200, Karsten Hilbert wrote:
> > > auto_explain automatically produces the explain output of a query that is
> > > running for reals. The effect is identical to running explain analyze
> > > except your output > here is whatever the query would produce in
On 8/4/23 07:33, Julien Rouhaud wrote:
Now, there also seems to be some common misconception about how auto_explain is
working, as it's not the first time that I hear people thinking or assuming
that it's executing extra EXPLAIN commands. Maybe adding some extra
clarification could help, mayb
Am Fri, Aug 04, 2023 at 01:33:19PM +0800 schrieb Julien Rouhaud:
> > explicit hint towards write query side effects.
>
> The docs says that it automatically shows the execution plans, not that it's
> itself doing an EXPLAIN.
Yep, so maybe _that_ point warrants being pointed out: that
auto_explain
> On Thu, Aug 3, 2023 at 9:29 AM Karsten Hilbert
> mailto:karsten.hilb...@gmx.net]> wrote:
>>
>>
>>https://www.postgresql.org/docs/current/auto-explain.html[https://www.postgresql.org/docs/current/auto-explain.html]
>>
>> don't explicitely state that it does so, too. Nor can I read impliciteness
> > auto_explain automatically produces the explain output of a query that is
> > running for reals. The effect is identical to running explain analyze
> > except your output > here is whatever the query would produce instead of
> > the explain output, which instead goes into the log.
>
> Than
