psql: server version check for \dO

Josh Kupershmidt <schmiddy@gmail.com>

From: Josh Kupershmidt <schmiddy@gmail.com>

To: pgsql-hackers <pgsql-hackers@postgresql.org>

Date: 2012-05-10T05:09:27Z

Lists: pgsql-hackers

Attachments

listCollations_versioncheck.diff (text/x-patch) patch

Hi all,

I think psql's \dO command is missing the server version check which
similar commands such as \dx use. Right now \dO errors out with:

test=# \dO
ERROR:  relation "pg_catalog.pg_collation" does not exist

when talking to servers older than 9.1, which don't have pg_collation.
Simple patch for listCollations() attached.

Josh