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doc: PG 16 relnotes: clarify LOCK TABLE description

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Backpatch-through: 16 only
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Bruce Momjian 2023-08-31 15:14:18 -04:00
parent d5feb6011e
commit 22297cd65f
1 changed files with 8 additions and 7 deletions
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15
doc/src/sgml/release-16.sgml
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@ -948,14 +948,15 @@ Author: Jeff Davis <jdavis@postgresql.org>
</para>
<para>
Previously the ability to perform <command>LOCK
TABLE</command> at various lock levels was bound to
specific query-type permissions. For example, <link
Previously a user's ability to perform <command>LOCK
TABLE</command> at various lock levels was limited to the
lock levels required by the commands they had permission
to execute on the table. For example, someone with <link
linkend="sql-update"><command>UPDATE</command></link>
could perform all lock levels except
<literal>ACCESS SHARE</literal>, which required <link
linkend="sql-select"><command>SELECT</command></link> permissions.
Now <command>UPDATE</command> can issue all lock levels. MORE?
permission could perform all lock levels except <literal>ACCESS
SHARE</literal>, even though it was a lesser lock level. Now users
can issue lesser lock levels if they already have permission for
greater lock levels.
</para>
</listitem>