If anybody wonders, the no. 1 reason I find datalog so compelling, is the support for "named queries", which basically means that you can store a complex lookup as named "concept", which is then usable in other queries.

This, combined with the pattern-matching oriented syntax that leverages implicit JOINs, makes it so much more useful (it seems to me), than SQL VIEWs (which would be the SQL counterpart to datalog's named queries) will ever be (Correct me if I'm wrong!).