asutton/waffle — pull request #3 by thehexia (2014-11-29 17:17:37+00:00)
Title: The sort of done relational algebra + some binary operators

Support for

- union
- intersection
- difference
- selection (sort of, selection from 2+ tables is still a little shady)
- record projection
- list column projection
- and, or, not, less, equals

Incomplete join operation which I'm hoping someone will do eventually.