Re: Best way to use indexes for partial match at - Mailing list pgsql-general

On Wed, 2005-11-09 at 14:56, Andrus wrote:
> > you can create two indexes:
> >
> > CREATE INDEX myindex_lc on mytable(col1 text_pattern_ops);
> > and
> > CREATE INDEX myindex_normal ON foo(col1);
> >
> > the first one will be used when using LIKE and the other for normal
> > comparisons .
>
> Jaime,
>
> CREATE INDEX myindex_normal ON foo(col1);
>
> Creates btree structure. In other dbm system btree structure can be used for
> searches where only some first characters in index key are known.
>
> So I see no reason to create second index using text_pattern_ops for this
> purpose.
>
> I'm searching a way to use Postgres regular index for this.

Easy, do what those other databases do.  Setup your database to not use
a locale.

initdb --locale=C

and you're golden.