Gaetano Mendola <[EMAIL PROTECTED]> writes: > Tom Lane wrote: >> Can't you do what you want as a local add-on?
> I guess that for manage efficiently million of email addresses I need > to have a built in type instead of a domain with a regex as validator, You probably ought to do some measurements before assuming that. > considering also that I wish select email for domain like: > select * from users where email >> 'hotmail.com'; I don't think you need write a line of C code for that either; a functional index would do the job. But even if you want to do it as a custom datatype, it can be an *add on*. Postgres is designed for extension in-the-field and I see nothing here that requires the type to be built in. See all the examples in contrib (I think there are some on gborg as well). regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org