I'm looking to add a column to my database with not null and a default
value:
vk=> alter table msg_owner add column user_optional_fields varchar(255) NOT NULL default '';
ERROR: Adding columns with defaults is not implemented. Add the column, then use ALTER TABLE SET DEFAULT.
vk=> alter table msg_owner add column user_optional_fields varchar(255) NOT NULL ;
ERROR: Adding NOT NULL columns is not implemented. Add the column, then use ALTER TABLE ADD CONSTRAINT.
Ok, so we can succeed with this:
ALTER TABLE msg_owner ADD COLUMN user_optional_fields VARCHAR(255);
ALTER TABLE msg_owner ALTER user_optional_fields SET DEFAULT '';
UPDATE msg_owner SET user_optional_fields = '';
Now my problem is I cannot find any syntax for ALTER TABLE ADD
CONSTRAINT to put a NOT NULL constraint on a column. Can someone help
me here?
I'm using Postgres 7.2.1 on FreeBSD 4.6.
Thanks.
--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Vivek Khera, Ph.D. Khera Communications, Inc.
Internet: khera@kciLink.com Rockville, MD +1-240-453-8497
AIM: vivekkhera Y!: vivek_khera http://www.khera.org/~vivek/