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| author |  Adam Chlipala <adamc@hcoop.net> | 2008-08-31 15:47:32 -0400 |
|---|---|---|
| committer | Adam Chlipala <adamc@hcoop.net> | 2008-08-31 15:47:32 -0400 |
| commit | 003594fd2ed4739b9f1fdc8df350615fdc11a3f7 (patch) | |
| tree | 8705b6c057ab6c4bca2a68a6f3901722a9802d03 /tests/relops.ur | |
| parent | 1d2a33433b530bdfe2c4cf7c7f0e6bc7190d87c5 (diff) | |
Monoize relops
Diffstat (limited to 'tests/relops.ur')
| -rw-r--r-- | tests/relops.ur | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/tests/relops.ur b/tests/relops.ur index c9fca0cc..b876c482 100644 --- a/tests/relops.ur +++ b/tests/relops.ur @@ -7,4 +7,24 @@ val q2 = (SELECT t1.A, t1.B FROM t1 WHERE t1.A = 0 INTERSECT SELECT t1.B, t1.A FROM t1 WHERE t1.B = t1.B) val q3 = (SELECT t1.A, t1.B, t1.C FROM t1 WHERE t1.A = 0 INTERSECT SELECT * FROM t1 WHERE t1.B = 'Hello world!' - EXCEPT SELECT * FROM t1 WHERE t1.A < t1.A) + EXCEPT SELECT * FROM t1 WHERE t1.A < t1.A + UNION SELECT * FROM t1 WHERE t1.A > t1.A) + +datatype list a = Nil | Cons of a * list a + +val r1 : transaction (list {A : int, B : string, C : float}) = + query q3 + (fn fs acc => return (Cons (fs.T1, acc))) + Nil + +val r2 : transaction string = + ls <- r1; + return (case ls of + Nil => "Problem" + | Cons ({B = b, ...}, _) => b) + +val main : unit -> transaction page = fn () => + s <- r2; + return <html><body> + {cdata s} + </body></html> |