From 0ca7aad45b1581ab86d136aaf7829418e093bb24 Mon Sep 17 00:00:00 2001 From: Adam Chlipala Date: Sun, 31 Aug 2008 15:04:10 -0400 Subject: Monoized GROUP BY --- tests/group_by.ur | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'tests/group_by.ur') diff --git a/tests/group_by.ur b/tests/group_by.ur index 569676d5..93655568 100644 --- a/tests/group_by.ur +++ b/tests/group_by.ur @@ -9,3 +9,23 @@ val q4 = (SELECT * FROM t1 WHERE t1.A = 0 GROUP BY t1.C HAVING t1.C < 0.2) val q5 = (SELECT t1.A, t2.D FROM t1, t2 GROUP BY t2.D, t1.A) val q6 = (SELECT t1.A, t2.D FROM t1, t2 WHERE t1.C = 0.0 GROUP BY t2.D, t1.A HAVING t1.A = t1.A AND t2.D = 17) + + +datatype list a = Nil | Cons of a * list a + +val r1 : transaction (list {B : string}) = + query q1 + (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 + {cdata s} + -- cgit v1.2.3