I'm trying to create a module that returns a SinceDate when having more than one UntilDate per ID, for example:
REL_ID, UNTIL, fSince
1, 10/10/08, 0
2, 09/10/08, 0
2, 30/10/08, 10/10/08
3, 10/10/08, 0
So far it works okay, the problem is that fSince returns the value that corresponds to the...