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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 | a60860ff33fbd41685943e1c59a199fe95ee96bd (patch) | |
| tree | 98a5b8bc72933aac4ff3ceaa9043a50a20949f12 /src/backend/regex/regexec.c | |
| parent | c4b298ee15aa67a953e65c8efa1a33eeea721446 (diff) | |
| download | postgresql-a60860ff33fbd41685943e1c59a199fe95ee96bd.tar.gz postgresql-a60860ff33fbd41685943e1c59a199fe95ee96bd.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 'src/backend/regex/regexec.c')
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