Joined: 09 Mar 2011 Posts: 7312 Location: Inside the Matrix
It doesn't matter if the keys are decimal, it only matters that they are the same length, and the same data-type. The comparison is "match or not", the convention used to represent a value by a particular bit-setting is irrelevant.
The comparisons are effectively BI or CH, but that makes no difference to anything. Your JOINKEYS will work fine with "decimal" values as the keys. Whatever it is the "decimal" means to you. It just doesn't matter for the JOINKEYS, which just needs match or not.