====================================== This PostgreSQL extension implements a email data type IMPORTANT: hash c function for hash index is not implementes yet, i do it in plpgsql . I'm working on it and will be releasing another version very soon. Building -------- make USE_PGXS=1 sudo make USE_PGXS=1 install in postgresql execute: create extension email function -------- getuser(email) return the user of email getdomain (emial) return the domain of email operators -------- = check that 2 email data are iquals <> check that 2 email data are diferent Example ------- create extension email create table example (field email) insert into ejemplo values ('asotolongo@uci.cu') select * from ejemplo where field1='asotolongo@uci.cu' select getuser(field1),getdomain(field1) from ejemplo -- Anthony R. Sotolongo leon asotolongo@uci.cu