Question

I’ve been doing some searching on the Internet, but I can’t for the life figure this out:

Can I force a MySQL table column to ONLY accept a set number of characters (e.g. 5 numbers ONLY, not 4 numbers nor 6 numbers)? I’ve read the MySQL documentation for some various data types but haven’t really discovered anything yet.

In a rather unfortunate move, I can’t perform reg-ex checking in PHP that easily right now, and would like to take the easy way out by forcing this check in the database itself. Thanks in advance!

Answer 1

you need to write a layer of code to do things like trigger BEFORE INSERT