RE: partition pruning only works for select but update

For release v14, optimizer can handle large partition counts query ( select ,update ,delete) and partition pruning is similar as SELECT, right? We will check option to upgrade to v14.

Thanks,

James

-----Original Message-----
From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Sent: Tuesday, June 28, 2022 9:30 PM
To: James Pang (chaolpan) <chaolpan(at)cisco(dot)com>
Cc: pgsql-performance(at)lists(dot)postgresql(dot)org
Subject: Re: partition pruning only works for select but update

"James Pang (chaolpan)" <chaolpan(at)cisco(dot)com> writes:
> But when
> Explain update table set .. where partitionkey between to_timestamp() and to_timestamp();
> It still show all of partitions with update ...

In releases before v14, partition pruning is far stupider for UPDATE (and DELETE) than it is for SELECT.

regards, tom lane