On Wed, 21 Jan 2004, Kragen Sitaker wrote:
> I'd like to be able to do queries like "select count(*), fromline from
> message where subject like 'Couldn%'" quickly. I see that, in current
> Postgres, I can do this with an index like "create index message_subject
> on message using btree(subject varchar_pattern_ops)". But I'm using
> Postgres 7.3.4, and it doesn't seem to have varchar_pattern_ops in its
> pg_opclass.opcname. Is there an easier way to do these queries than
> upgrading?
The only way to make that version work well here is to dump your database,
reinitdb with --locate=C and reimport your data. Then the indexes can be
used without having to have varchar_pattern_ops.