| From: | Andrey Lepikhov <a(dot)lepikhov(at)postgrespro(dot)ru> |
|---|---|
| To: | "Gregory Stark (as CFM)" <stark(dot)cfm(at)gmail(dot)com>, Michał Kłeczek <michal(at)kleczek(dot)org> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Removing unneeded self joins |
| Date: | 2023-07-05 14:28:59 |
| Message-ID: | bcf2f3c5-fbdc-f85b-af3e-ebec616160f6@postgrespro.ru |
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| Thread: | |
| Lists: | pgsql-hackers |
Hi,
During the significant code revision in v.41 I lost some replacement
operations. Here is the fix and extra tests to check this in the future.
Also, Tom added the JoinDomain structure five months ago, and I added
code to replace relids for that place too.
One more thing, I found out that we didn't replace SJs, defined by
baserestrictinfos if no one self-join clause have existed for the join.
Now, it is fixed, and the test has been added.
To understand changes readily, see the delta file in the attachment.
--
regards,
Andrey Lepikhov
Postgres Professional
| Attachment | Content-Type | Size |
|---|---|---|
| v41-v42-delta.txt | text/plain | 6.5 KB |
| v42-0001-Remove-self-joins.patch | text/plain | 96.6 KB |
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