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| author | David Rowley | 2025-04-02 01:03:48 +0000 |
|---|---|---|
| committer | David Rowley | 2025-04-02 01:03:48 +0000 |
| commit | e962d6d12b7e8185775da26ef0f77a3ac63d18a0 (patch) | |
| tree | 71b9b743b1564c29fb9708fac552df5230f90aaf | |
| parent | 5672a839977949457d1f81a4fd43b1e7c097ba14 (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 c150dd217f9..bef12758711 100644 --- a/doc/src/sgml/ddl.sgml +++ b/doc/src/sgml/ddl.sgml @@ -4986,7 +4986,9 @@ 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> |