Re: Another thought about search_path semantics

Andres Freund <andres@2ndquadrant.com> writes:
> On 2014-04-04 13:58:53 -0400, Tom Lane wrote:
>> Hm ... doesn't fix the problem for existing dump files, which are going to
>> say "search_path = foo, pg_catalog".  However, we could modify it a bit,
>> so that the marker is put on schemas that can be skipped if missing for
>> creation purposes.  Then the default could look like "search_path =
>> !$user, public", while we still get safe behavior for pg_dump's commands.

> Unfortunately the curren tsearch_path is probably enshrined in a couple
> of thousand postgresql.confs...

Uncommented?  Anyway, we never have and never will promise that you don't
have to revisit your postgresql.conf during a major version upgrade.

> How about simply refusing to create anything in pg_catalog unless it's
> explicitly schema qualified? Looks a bit nasty to implement but doable?

That's what happens already.  The point is to do better.  What we want
for pg_dump's case is to get a complaint that schema foo doesn't exist,
*not* an attempt to create in pg_catalog.  That's what you got (though
at the SET command not the CREATE command) in all versions before 9.2.
        regards, tom lane