On Wed, Aug 29, 2012 at 9:45 AM, Merlin Moncure <mmoncure@gmail.com> 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