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

If you can figure out a regular expression that matches email addresses to your satisfaction, consider whether it might not be more useful as a domain rather than a check constraint.

For some of the pitfalls see regular-expressions.info.