Mercurial > urweb
view tests/order_by.ur @ 689:b6a8425e1b1f
Make sure only one pull request runs at a time for each client
author | Adam Chlipala <adamc@hcoop.net> |
---|---|
date | Thu, 02 Apr 2009 13:48:59 -0400 |
parents | bacd0ba869e1 |
children |
line wrap: on
line source
table t1 : {A : int, B : string, C : float} table t2 : {A : float, D : int} val q1 = (SELECT * FROM t1 ORDER BY t1.A, t1.B) val q2 = (SELECT * FROM t1 GROUP BY t1.A ORDER BY t1.A, t1.B) val q3 = (SELECT t1.B FROM t1 UNION SELECT t1.B FROM t1 ORDER BY t1.B) val q4 = (SELECT t1.A, t2.D, t1.A < t2.D AS Lt FROM t1, t2 ORDER BY Lt) val q5 = (SELECT t1.A, t1.B, t2.D, t1.A < t2.D AS Lt FROM t1, t2 ORDER BY t1.A DESC, Lt ASC, t2.D DESC) datatype list a = Nil | Cons of a * list a val r1 : transaction (list string) = query q5 (fn fs acc => return (Cons (fs.T1.B, acc))) Nil val r2 : transaction string = ls <- r1; return (case ls of Nil => "Problem" | Cons (b, _) => b) val main : unit -> transaction page = fn () => s <- r2; return <html><body> {cdata s} </body></html>