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view tests/coalesce.ur @ 1949:d7bec4e63415

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Do a bit of extra userspace copying to send HTTP response with a single system call
author Adam Chlipala <adam@chlipala.net>
date Tue, 31 Dec 2013 09:34:41 -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>)