If we got rid of the other NOT NULL != CHECK (a IS NOT NULL) instance, may
as well get rid of the one on this page:

http://developer.postgresql.org/docs/postgres/sql-createdomain.html

Chris


Tue, 3 Sep 2002 11:13:51 +0800
"Christopher Kings-Lynne" <chriskl@familyhealth.com.au>
Another use of check (a is not null)