On Wed, Aug 29, 2012 at 9:45 AM, Merlin Moncure <mmoncure@xxxxxxxxx> wrote: > citext unfortunately doesn't allow for index optimization of LIKE > queries, which IMNSHO defeats the whole purpose. to the best way > remains to use lower() ... > this will be index optimized and fast as long as you specified C > locale for your database. What is the difference between C and en_US.UTF8, please? We see that the same query (that invokes a sort) runs 15% faster under the C locale. The output between C and en_US.UTF8 is identical. We're considering moving our database from en_US.UTF8 to C, but we do deal with internationalized text. Best, Aleksey -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general