Mercurial > urweb

annotate tests/filter.ur @ 2013:77cc9169d6e0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Change context-local memory allocation to return word-aligned addresses (based on patch by Evan Danaher)
author Adam Chlipala <adam@chlipala.net>
date Sun, 18 May 2014 18:58:50 -0400
parents 6d9538ce94d8
children
rev   line source
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>)