On Thu, Jul 1, 2010 at 01:50, John Smith <deltafoxtrot...@gmail.com> wrote: > On 1 July 2010 00:32, Ævar Arnfjörð Bjarmason <ava...@gmail.com> wrote: >> Yes, but it generally handles larger types much worse than real >> databases. E.g. you can't have an index for a TEXT, but you can index >> VARCHAR(255) on InnoDB. > > I thought we were only discussing numeric types, but I think you can > index varchar regardless of the DB type, and you avoid TEXT fields > like the plague since it will use the hdd to build the query...
I was interjecting a factoid about MySQL's type handling in general as a point of reference. And as I said the difference is that text fields have to be VARCHAR in MySQL for it to index them, unless you use MyISAM FULLTEXT indexes. You don't have to avoid TEXT at all in databases that don't have such arbitrary restrictions. PostgreSQL handles it just fine, so does SQLite for that matter. _______________________________________________ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
