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view tests/whiteout.ur @ 2160:72fe1cc704c5
Tag NULLs with their types in SQL, to help the DBMS do type inference
author | Adam Chlipala <adam@chlipala.net> |
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date | Sat, 04 Jul 2015 19:24:26 -0400 |
parents | f0224c7f12bb |
children |
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table t : { Chan : option (channel unit) } fun main () : transaction page = ch <- channel; dml (INSERT INTO t (Chan) VALUES ({[Some ch]})); return <xml><body>Did it.</body></xml>