| From: | Andrei Lepikhov <lepihov(at)gmail(dot)com> |
|---|---|
| To: | David Rowley <dgrowleyml(at)gmail(dot)com> |
| Cc: | Zhang Mingli <zmlpostgres(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, jian he <jian(dot)universality(at)gmail(dot)com> |
| Subject: | Re: Remove useless GROUP BY columns considering unique index |
| Date: | 2024-11-29 06:35:56 |
| Message-ID: | 1507cbb9-937f-48f5-9931-b67014511f9b@gmail.com |
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| Thread: | |
| Lists: | pgsql-hackers |
On 11/29/24 09:39, David Rowley wrote:
> On Fri, 29 Nov 2024 at 15:02, David Rowley <dgrowleyml(at)gmail(dot)com> wrote:
>> I've attached an updated patch that gets rid of the
>> get_unique_not_null_attnos() function completely and uses the
>> RelOptInfo.indexlist and RelOptInfo.notnullattnums.
>
> I forgot to do a local commit before sending v8. Fixed in the attached v9.
1. Thread reference in the patch comment doesn't work.
2. May it be possible to move remove_useless_groupby_columns in the
second commit? It would be easier to review the differences.
--
regards, Andrei Lepikhov
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