Geoff Tolley <geoff.tol...@yougov.com> writes:
> The last time this was asked about
> (http://archives.postgresql.org/pgsql-admin/2010-02/msg00189.php), 9.0
> was still alpha.
> Is there any reason to suspect that direct pg_attribute manipulation to
> expand a varchar(n) column might not play nice with streaming
> replication/hot standby? (Naturally I'm also in the process of testing).
I can't see why it wouldn't. The WAL/replication mechanism works at
such a low level that it has no idea whether an update to pg_attribute
originated in an official DDL command or a manual UPDATE of the catalog.
I think you should be more worried about fat-fingering the update than
whether it will be replicated correctly.
But, of course, testing is always a good idea ;-)
regards, tom lane
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