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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2021-08-31 15:04:05 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2021-08-31 15:04:05 -0400 |
| commit | bd3611db5a6f3726094872f59feab426374d2c46 (patch) | |
| tree | a77680e46bfc5a42ded208a1a3ec7409ab7d4605 /contrib/postgres_fdw/postgres_fdw.h | |
| parent | 6c450a861f1a928f44c9ae80814ed9a91927c25a (diff) | |
| download | postgresql-bd3611db5a6f3726094872f59feab426374d2c46.tar.gz postgresql-bd3611db5a6f3726094872f59feab426374d2c46.zip | |
In pg_dump, avoid doing per-table queries for RLS policies.
For no particularly good reason, getPolicies() queried pg_policy
separately for each table. We can collect all the policies in
a single query instead, and attach them to the correct TableInfo
objects using findTableByOid() lookups. On the regression
database, this reduces the number of queries substantially, and
provides a visible savings even when running against a local
server.
Per complaint from Hubert Depesz Lubaczewski. Since this is such
a simple fix and can have a visible performance benefit, back-patch
to all supported branches.
Discussion: https://postgr.es/m/20210826084430.GA26282@depesz.com
Diffstat (limited to 'contrib/postgres_fdw/postgres_fdw.h')
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