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view tests/coalesce.ur @ 1940:1484ba362062

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Add a bit of manual clarification about channels and clients
author Adam Chlipala <adam@chlipala.net>
date Wed, 25 Dec 2013 12:02:42 -0500
parents e44be6ece475
children
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table t : { A : option int }

fun main () : transaction page =
    queryX (SELECT COALESCE(t.A, 13)
            FROM t)
    (fn r => <xml>{[r.1]},</xml>)