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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 0aee86b8a6d6
children
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table t1 : {A : int, B : string, C : float, D : bool}

fun main () : transaction page =
        () <- dml (DELETE FROM t1 WHERE A = 5);
        return <html><body>Deleted.</body></html>