Postgres Function to Validate Email Address

Question

A check constraint which would call a function to validate email addresses is not working fine for me.

CREATE OR REPLACE FUNCTION f_IsValidEmail(text) return         


        

Answer 1

I recommend a solution using PL/Perl and the Email::Address module. Something like the following:

CREATE OR REPLACE FUNCTION email_valid(email text) RETURNS bool
LANGUAGE plperlu
AS $$
use Email::Address;
my @addresses = Email::Address->parse($_[0]);
return scalar(@addresses) > 0 ? 1 : 0;
$$;

See also http://wiki.postgresql.org/wiki/Email_address_parsing.