Q:

Cannot ADD CONSTRAINT in Postgresql

I am having trouble with what I would think is a pretty simple constraint issue in postgres.
Ruinning: 
ALTER TABLE rss_feed_list ADD CONSTRAINT status_type CHECK (feed_status = 'active' OR feed_status 'inactive');
returns the error:
ERROR:  type "feed_status" does not exist

A:

There is no equals sign here:
OR feed_status 'inactive'

It probably should be:
OR feed_status = 'inactive'

