| From: | Andrey Lepikhov <a(dot)lepikhov(at)postgrespro(dot)ru> |
|---|---|
| To: | Konstantin Knizhnik <k(dot)knizhnik(at)postgrespro(dot)ru>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
| Cc: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Arseny Sher <a(dot)sher(at)postgrespro(dot)ru> |
| Subject: | Re: Removing unneeded self joins |
| Date: | 2019-11-05 18:20:28 |
| Message-ID: | f84b7d25-d99c-5dd8-c9cb-64a3731a3e2a@postgrespro.ru |
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| Thread: | |
| Lists: | pgsql-hackers |
v.21 in attechment fix small bug:
Now we move all non-mergejoinable clauses from joininfo to base restrict
info because of the relation will not be joined.
On 30/09/2019 13:29, Konstantin Knizhnik wrote:
>
> Slightly refactored version of the patch with more comments.
>
--
Andrey Lepikhov
Postgres Professional
https://postgrespro.com
The Russian Postgres Company
| Attachment | Content-Type | Size |
|---|---|---|
| 0001-Remove-self-joins-v21.patch | text/x-patch | 74.6 KB |
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