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view tests/relops.ur @ 1892:907a82a44f01

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Add missing inter-library dependencies This is needed, at least on recent Ubuntu, to fix these linker errors when compiling any Ur/Web application: liburweb.so: undefined reference to `lround' liburweb.so: undefined reference to `ceil' liburweb.so: undefined reference to `RAND_bytes' liburweb.so: undefined reference to `DES_fcrypt' liburweb.so: undefined reference to `SHA256_Init' liburweb.so: undefined reference to `SHA256_Final' liburweb.so: undefined reference to `SHA256_Update' Signed-off-by: Anders Kaseorg <andersk@mit.edu> --- src/c/Makefile.am | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)
author Anders Kaseorg <andersk@mit.edu>
date Thu, 21 Nov 2013 14:32:11 -0500
parents e933297c4e24
children
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line source
table t1 : {A : int, B : string, C : float}
table t2 : {A : float, D : int}

val q1 = (SELECT * FROM t1
        UNION SELECT * FROM t1)
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
        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 <xml><body>
                {cdata s}
        </body></xml>