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Interpret 'table' signature items more flexibly, automatically adding (Ur) constraints to support a kind of subtyping over (SQL) constraint sets
author Adam Chlipala <adam@chlipala.net>
date Mon, 04 Nov 2013 15:14:23 -0500
parents ac141fbb313a
children
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table t : { A : int }

fun main () : transaction page =
    x <- queryX (SELECT *
                 FROM t
                 ORDER BY RANDOM)
         (fn r => <xml>{[r.T.A]}<br/></xml>);
    return <xml><body>{x}</body></xml>