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Doc: add information about partition locking

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The documentation around locking of partitions for the executor startup
phase of run-time partition pruning wasn't clear about which partitions
were being locked.  Fix that.

Reviewed-by: Tender Wang <tndrwang@gmail.com>
Discussion: https://postgr.es/m/CAApHDvp738G75HfkKcfXaf3a8s%3D6mmtOLh46tMD0D2hAo1UCzA%40mail.gmail.com
Backpatch-through: 13
This commit is contained in:
David Rowley
2025-04-02 14:04:10 +13:00
parent 5a0840b767
commit 9b34f10ee0
1 changed files with 3 additions and 1 deletions
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doc/src/sgml/ddl.sgml
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@@ -4837,7 +4837,9 @@ EXPLAIN SELECT count(*) FROM measurement WHERE logdate &gt;= DATE '2008-01-01';
It is possible to determine the number of partitions which were It is possible to determine the number of partitions which were
removed during this phase by observing the removed during this phase by observing the
<quote>Subplans Removed</quote> property in the <quote>Subplans Removed</quote> property in the
<command>EXPLAIN</command> output. <command>EXPLAIN</command> output. It's important to note that any
partitions removed by the partition pruning done at this stage are
still locked at the beginning of execution.
</para> </para>
</listitem> </listitem>