| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Alexander Korotkov <aekorotkov(at)gmail(dot)com> |
| Cc: | Tender Wang <tndrwang(at)gmail(dot)com>, Daniel Gustafsson <daniel(at)yesql(dot)se>, Andrei Lepikhov <lepihov(at)gmail(dot)com>, Richard Guo <guofenglinux(at)gmail(dot)com>, Ranier Vilela <ranier(dot)vf(at)gmail(dot)com>, Alena Rybakina <a(dot)rybakina(at)postgrespro(dot)ru>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Robert Haas <robertmhaas(at)gmail(dot)com>, Alexander Lakhin <exclusion(at)gmail(dot)com>, "Gregory Stark (as CFM)" <stark(dot)cfm(at)gmail(dot)com>, Michał Kłeczek <michal(at)kleczek(dot)org>, Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com> |
| Subject: | Re: Removing unneeded self joins |
| Date: | 2025-04-06 14:41:38 |
| Message-ID: | 2831340.1743950498@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Alexander Korotkov <aekorotkov(at)gmail(dot)com> writes:
> Nevertheless, should we consider revisiting this flag? I see the only
> other GUC simultaneously QUERY_TUNING_METHOD and GUC_NOT_IN_SAMPLE is
> optimize_bounded_sort, which is not exposed in a standard build.
enable_self_join_elimination is documented, and it has no hint that
it is any different from any other enable_foo flag. It shouldn't
be different.
regards, tom lane
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