database/postgres
database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-05-05 09:19:17 +03:00
Code

Doc: add information about partition locking

Browse Source 
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 14:03:48 +13:00
parent 5672a83997
commit e962d6d12b
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
doc/src/sgml/ddl.sgml
View File

@ -4986,7 +4986,9 @@ 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>