Обсуждение: Comment about not being able to run ANALYZE on replicas

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Comment about not being able to run ANALYZE on replicas

От
PG Doc comments form
Дата:
The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/12/sql-analyze.html
Description:

https://www.postgresql.org/docs/12/sql-analyze.html does not have anything
about not being able to run ANALYZE on replicas. 
I now understand that this is because statistics are stored in a table, and
that table is replicated from primary server to the replica, but it would be
helpful to have something about this in the official documentation.

Thanks,
Niko.

Re: Comment about not being able to run ANALYZE on replicas

От
Tom Lane
Дата:
PG Doc comments form <noreply@postgresql.org> writes:
> https://www.postgresql.org/docs/12/sql-analyze.html does not have anything
> about not being able to run ANALYZE on replicas. 
> I now understand that this is because statistics are stored in a table, and
> that table is replicated from primary server to the replica, but it would be
> helpful to have something about this in the official documentation.

I'm a little skeptical about that.  By that argument, nearly every one
of our SQL command pages would need a disclaimer saying that you can't
use it on a replica.

            regards, tom lane