Mercurial > urweb
annotate tests/timestamp.ur @ 1936:6745eafff617
Start SQL transactions as read-only when possible, based on conservative program analysis
| author | Adam Chlipala <adam@chlipala.net> |
|---|---|
| date | Thu, 12 Dec 2013 17:42:48 -0500 |
| parents | 690638bd9fef |
| children |
| rev | line source |
|---|---|
| adam@1834 | 1 table t : { A : time } |
| adam@1834 | 2 |
| adam@1834 | 3 fun many ls = |
| adam@1834 | 4 case ls of |
| adam@1834 | 5 [] => (WHERE TRUE) |
| adam@1834 | 6 | tm :: ls' => (WHERE t.A = {[tm]} AND {many ls'}) |
| adam@1834 | 7 |
| adam@1834 | 8 task initialize = fn () => |
| adam@1834 | 9 tm <- now; |
| adam@1834 | 10 dml (DELETE FROM t WHERE {many (tm :: [])}) |
| adam@1834 | 11 |