Mercurial > urweb
diff src/coq/Semantics.v @ 1394:d328983dc5a6
Allow subqueries to reference aggregate-only columns of free tables; treat non-COUNT aggregate functions as possibly returning NULL
author | Adam Chlipala <adam@chlipala.net> |
---|---|
date | Sat, 15 Jan 2011 14:53:13 -0500 |
parents | 75c7a69354d6 |
children | 705cb41ac7d0 |