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| author | David Rowley | 2025-04-02 01:04:53 +0000 |
|---|---|---|
| committer | David Rowley | 2025-04-02 01:04:53 +0000 |
| commit | d501e7ba5e50b86a3769595d5cfbfea281312af6 (patch) | |
| tree | 894e63830f5efa90e4df30eba8aa927b128ad96a | |
| parent | b68f664bb024330d33983b1e1f59f483bdd3aca1 (diff) | |
Doc: add information about partition locking
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
| -rw-r--r-- | doc/src/sgml/ddl.sgml | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml index 40da56923d9..5c98f4e2a3d 100644 --- a/doc/src/sgml/ddl.sgml +++ b/doc/src/sgml/ddl.sgml @@ -4690,7 +4690,9 @@ EXPLAIN SELECT count(*) FROM measurement WHERE logdate >= DATE '2008-01-01'; It is possible to determine the number of partitions which were removed during this phase by observing 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> </listitem> |