Mercurial > urweb
annotate 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> |
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date | Fri, 06 May 2011 16:24:45 -0430 |
parents | 6d9538ce94d8 |
children |
rev | line source |
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adamc@904 | 1 fun filter [fs ::: {Type}] [ks] (t : sql_table fs ks) (p : sql_exp [T = fs] [] [] bool) |
adamc@904 | 2 : sql_query [T = fs] [] = |
adamc@904 | 3 (SELECT * FROM t WHERE {p}) |
adamc@904 | 4 |
adamc@904 | 5 table t : { A : int, B : float } |
adamc@904 | 6 |
adamc@904 | 7 fun main () = |
adamc@904 | 8 queryX (filter t (WHERE t.A > 3)) |
adamc@904 | 9 (fn r => <xml>{[r.T.A]}, {[r.T.B]}</xml>) |