Mercurial > urweb
comparison demo/constraints.ur @ 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> |
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date | Sat, 15 Jan 2011 14:53:13 -0500 |
parents | 74a090ff296e |
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1393:802c179dac1f | 1394:d328983dc5a6 |
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