When I am working with an Oracle database, I still find myself using SQL*Plus for many quick and dirty database queries. In particular, I often look up constraints in SQL*Plus. In this post, I look at ...

EDIT: I've pretty much completely layed out the OP differently to hopefully assist in understanding the problem, it's history, and possible solution.<BR><BR>Hi all,<BR>Sorry for the vague title, but ...

I think the logic is too complicated for a CHECK constraint, and I haven't managed to get a user-defined function to work it that context so it may not be possible that way.