On Wed, 1 Feb 2023 16:52:07 +1300
David Rowley wrote:
> On Wed, 1 Feb 2023 at 15:53, Yugo NAGATA wrote:
> > Maybe, you missed to set plan_cache_mode to force_generic_plan.
> > "Subplan Removed" doesn't appear when using a custom plan.
>
> I wouldn't say that's 100% true. The planner is only abl
On Wed, 1 Feb 2023 at 15:53, Yugo NAGATA wrote:
> Maybe, you missed to set plan_cache_mode to force_generic_plan.
> "Subplan Removed" doesn't appear when using a custom plan.
I wouldn't say that's 100% true. The planner is only able to prune
using values which are known during planning. Constant
On Wed, Feb 1, 2023 at 11:53:34AM +0900, Yugo NAGATA wrote:
> On Tue, 31 Jan 2023 20:38:21 -0600
> Justin Pryzby wrote:
>
> >
> > To: Bruce Momjian
> > Cc: pgsql-hack...@postgresql.org
> > Subject: Re: Generating "Subplan Removed" in EXPLAIN
> &g
On Tue, 31 Jan 2023 20:38:21 -0600
Justin Pryzby wrote:
>
> To: Bruce Momjian
> Cc: pgsql-hack...@postgresql.org
> Subject: Re: Generating "Subplan Removed" in EXPLAIN
> Date: Tue, 31 Jan 2023 20:38:21 -0600
> User-Agent: Mutt/1.9.4 (2018-02-28)
>
> On Tue
On Tue, Jan 31, 2023 at 08:59:57PM -0500, Bruce Momjian wrote:
> Does anyone know how to generate this? Thanks.
The regression tests know:
$ git grep -c 'Subplans Removed' ./src/test/regress/
src/test/regress/expected/partition_prune.out:29
--
Justin
On Tue, Jan 31, 2023 at 08:59:57PM -0500, Bruce Momjian wrote:
> Our document states that EXPLAIN can generate "Subplan Removed":
>
>
> https://www.postgresql.org/docs/current/ddl-partitioning.html#DDL-PARTITION-PRUNING
>
> It is possible to determine the number of partitions which w
Our document states that EXPLAIN can generate "Subplan Removed":
https://www.postgresql.org/docs/current/ddl-partitioning.html#DDL-PARTITION-PRUNING
It is possible to determine the number of partitions which were removed
during this phase by observing the “Subplans Remove
