>I want to alter a term in a column's constraint to allow only specified > strings as attributes Yes, you must drop then add the revised constraint. However, from your statement above, it sounds to me as if you would be better off using A FOREIGN kEY CONSTRAINT. It makes things a lot simpler.
On Mon, Dec 17, 2018 at 3:07 PM Joshua D. Drake <j...@commandprompt.com> wrote: > On 12/17/18 12:01 PM, Rich Shepard wrote: > > On Mon, 17 Dec 2018, Rich Shepard wrote: > > > >> I want to alter a term in a column's constraint to allow only specified > >> strings as attributes and have not found how to do this in the docs > >> (using > >> version 10 docs now). There is an alter table command that allows > >> renaming > >> a constraint but I've not seen how to modify the constraint itself. > > > > Is the procedure to drop the current check constraint then add the > > revised > > one? > > Or the other way around but yes. > > JD > > > > > > Rich > > > > -- > Command Prompt, Inc. || http://the.postgres.company/ || @cmdpromptinc > *** A fault and talent of mine is to tell it exactly how it is. *** > PostgreSQL centered full stack support, consulting and development. > Advocate: @amplifypostgres || Learn: https://postgresconf.org > ***** Unless otherwise stated, opinions are my own. ***** > > > -- *Melvin Davidson* *Maj. Database & Exploration Specialist* *Universe Exploration Command – UXC* Employment by invitation only!
