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comparison tests/query.ur @ 244:71bafe66dbe1

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Laconic -> Ur
author Adam Chlipala <adamc@hcoop.net>
date Sun, 31 Aug 2008 08:32:18 -0400
parents tests/query.lac@2b9dfaffb008
children b6b75e6e0898
comparison
equal deleted inserted replaced
243:2b9dfaffb008 244:71bafe66dbe1
1 table t1 : {A : int, B : string, C : float}
2 table t2 : {A : float, D : int}
3
4 datatype list a = Nil | Cons of a * list a
5
6 val q1 = (SELECT * FROM t1)
7 val r1 : transaction (list {A : int, B : string, C : float}) =
8 query q1
9 (fn fs _ acc => return (Cons (fs.T1, acc)))
10 Nil
11
12 val r2 : transaction int =
13 ls <- r1;
14 return (case ls of
15 Nil => 0
16 | Cons ({A = a, ...}, _) => a)