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annotate tests/order_by.ur @ 1249:7c6fc92f6c31

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Complain about DValRec; optimizations for unit-valued ECase and forgetting of path conditions across ESeq
author Adam Chlipala <adamc@hcoop.net>
date Thu, 29 Apr 2010 11:47:24 -0400
parents bacd0ba869e1
children
rev   line source
adamc@230 1 table t1 : {A : int, B : string, C : float}
adamc@230 2 table t2 : {A : float, D : int}
adamc@230 3
adamc@230 4 val q1 = (SELECT * FROM t1 ORDER BY t1.A, t1.B)
adamc@230 5 val q2 = (SELECT * FROM t1 GROUP BY t1.A ORDER BY t1.A, t1.B)
adamc@230 6 val q3 = (SELECT t1.B FROM t1
adamc@230 7 UNION SELECT t1.B FROM t1
adamc@230 8 ORDER BY t1.B)
adamc@234 9
adamc@234 10 val q4 = (SELECT t1.A, t2.D, t1.A < t2.D AS Lt
adamc@234 11 FROM t1, t2
adamc@234 12 ORDER BY Lt)
adamc@261 13 val q5 = (SELECT t1.A, t1.B, t2.D, t1.A < t2.D AS Lt
adamc@234 14 FROM t1, t2
adamc@268 15 ORDER BY t1.A DESC, Lt ASC, t2.D DESC)
adamc@261 16
adamc@261 17
adamc@261 18 datatype list a = Nil | Cons of a * list a
adamc@261 19
adamc@261 20 val r1 : transaction (list string) =
adamc@261 21 query q5
adamc@261 22 (fn fs acc => return (Cons (fs.T1.B, acc)))
adamc@261 23 Nil
adamc@261 24
adamc@261 25 val r2 : transaction string =
adamc@261 26 ls <- r1;
adamc@261 27 return (case ls of
adamc@261 28 Nil => "Problem"
adamc@261 29 | Cons (b, _) => b)
adamc@261 30
adamc@261 31 val main : unit -> transaction page = fn () =>
adamc@261 32 s <- r2;
adamc@261 33 return <html><body>
adamc@261 34 {cdata s}
adamc@261 35 </body></html>