Re: BUG #16249: Partition pruning blocks on exclusively locked table partition - Mailing list pgsql-bugs

PG Bug reporting form <noreply@postgresql.org> writes:
> In my humble opinion, this query should not be blocked during planning, as
> the partition can be pruned directly from the plan with the partition
> information that is available from the parent table: Partition information
> can be updated  when the partition is locked, but through the parent
> partitioned table. 

This case has been improved in PG v12.  It is operating as designed in
v11, however.

            regards, tom lane