Mercurial > urweb
view tests/filter.ur @ 1455:913d9c2f55c9
Corify Basis.unit to empty record; this is needed so that specialize
can see that they are equivalent.
author | Karn Kallio <kkallio@eka> |
---|---|
date | Fri, 06 May 2011 16:24:45 -0430 |
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>)