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view tests/filter.ur @ 2069:262dd74df39c

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Replace common "if(!quiet) printf(...)" pattern with a macro
author Sergey Mironov <grrwlf@gmail.com>
date Tue, 02 Sep 2014 17:36:14 +0000
parents 6d9538ce94d8
children
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fun filter [fs ::: {Type}] [ks] (t : sql_table fs ks) (p : sql_exp [T = fs] [] [] bool)
   : sql_query [T = fs] [] =
   (SELECT * FROM t WHERE {p})

table t : { A : int, B : float }

fun main () =
    queryX (filter t (WHERE t.A > 3))
           (fn r => <xml>{[r.T.A]}, {[r.T.B]}</xml>)