| From: | Corey Huinker <corey(dot)huinker(at)gmail(dot)com> |
|---|---|
| To: | Jeff Davis <pgsql(at)j-davis(dot)com> |
| Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, jian he <jian(dot)universality(at)gmail(dot)com>, Nathan Bossart <nathandbossart(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Magnus Hagander <magnus(at)hagander(dot)net>, Stephen Frost <sfrost(at)snowman(dot)net>, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, Peter Smith <smithpb2250(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, alvherre(at)alvh(dot)no-ip(dot)org, Noah Misch <noah(at)leadboat(dot)com> |
| Subject: | Re: Statistics Import and Export |
| Date: | 2025-01-21 03:59:44 |
| Message-ID: | CADkLM=eMut=oT6rCuCCa7gfnz6brqFnHA7DA1G1JuHeC-agZJA@mail.gmail.com |
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| Lists: | pgsql-hackers |
>
> Are you saying that there is a path for a partitioned index to have
> stats today? If so, we can just follow that locking protocol. If not,
> I'm concerned about trying to define the locking protocol for doing so
> as a side-effect of this work.
>
A quick test on v17 indicates that, no, there is no path for a partitioned
index to have stats of its own, so I'm fine with removing
RELKIND_PARTITIONED_INDEX from the allowable relkinds. The partitions of
the partitioned index have stats but the umbrella index does not.
> Wouldn't it be easy enough to issue a WARNING and skip it?
>
Sure.
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