Hey guys, I'm having some trouble with a certain Check constraint I've been trying to write. The user is supposed to be able to enter the days of the week, meaning, either M,T,W,R,F,S, or U. But here's where I'm having trouble, they must also be allowed to enter multiples like MWF. Normally I'd just do something like this: Code (SQL): ALTER TABLE SECTION ADD CONSTRAINT SECTION_DAYS_CK CHECK (DAYS IN ('M', 'T', 'W', 'R', 'F', 'S', 'U')); Is there a way I can do this without having to enter every possible combination of MTW, TWR, and so on? Just looking for someone to possibly point me in the right direction.