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view tests/timestamp.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 | 690638bd9fef |
children |
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table t : { A : time } fun many ls = case ls of [] => (WHERE TRUE) | tm :: ls' => (WHERE t.A = {[tm]} AND {many ls'}) task initialize = fn () => tm <- now; dml (DELETE FROM t WHERE {many (tm :: [])})