Jim Nasby wrote: > On 10/6/14, 11:24 PM, Robert Haas wrote: > > Offlist. > > >>FWIW, I've run into situations more than once in userspace where I need a > >>way to properly separate schema and object name. Generally I can make do > >>using reg* casts and then hitting catalog tables, but it'd be nice if there > >>was an easier way. > > > >Sure, although I think that's a bit of a separate problem. It's hard > >to iterate through a string a character at a time from the SQL level > >so that you can handle stuff like the quote_literal() rules. If we > >want people to be able to do that easily we need to provide tools to > >handle it. But C is actually quite well-suited to such tasks. > > Yeah, I wouldn't want to attempt this in SQL; I was saying that a > built-in function to do this would be broadly useful, not just for > replicating DROPs.
Well, most of what you need is served by pg_identify_object, I think: just grab the OID from the appropriate catalog, and the OID of the catalog itself; that function will give you schema and name, which is what you need. Probably the most difficult part is figuring out which reg* cast you want .. and of course there are also cases where there is no such datatype to cast to in the first place. -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
