I've been working with RedQueryBuilder primarily as a tool for allowing users to place constraints on a single table query. However, I need to add constraints to a more generic visual query and was wondering how to go about this using RQB.
You can see a prototype of my visual query builder here:
http://ordsvqd.bitballoon.com/
I could add a constraints table for all the selected columns, rather like MS Access, or use RQB. However, I'm not sure where to start for RQB - would I need multiple instances of RQB widgets, one per table?