JP,
> One column in my table contains email addresses - I want to check
> that any value entered contains a '@'. How do I create a CONSTRAINT
> or CHECK to ensure this when creating the table?
Here's the online documentation. It's very good, you should give it a
try!
http://www.us.postgresql.org/users-lounge/docs/7.2/postgres/sql-createtable.html
-Josh Berkus