Mercurial > urweb

annotate tests/subquery.ur @ 2280:985c8016b592

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Merge.
author Ziv Scully <ziv@mit.edu>
date Thu, 12 Nov 2015 08:46:51 -0500
parents 9c82548c97e9
children
rev   line source
adamc@1191 1 table t : { A : int, B : int, C : int }
adamc@1191 2
adamc@1191 3 fun main () =
adamc@1191 4 v <- queryX1 (SELECT t.A, t.C
adamc@1191 5 FROM t
adamc@1191 6 WHERE t.B = (SELECT MAX(U.B) AS M
adamc@1191 7 FROM t AS U
adamc@1191 8 WHERE U.A = t.A))
adamc@1192 9 (fn r => <xml>{[r.A]},{[r.C]};</xml>);
adamc@1192 10 v' <- queryX1 (SELECT t.A, t.C
adamc@1192 11 FROM (SELECT t.A AS A, MAX(t.B) AS B
adamc@1192 12 FROM t
adamc@1192 13 GROUP BY t.A) AS Maxes
adamc@1192 14 JOIN t ON t.A = Maxes.A AND t.B = Maxes.B)
adamc@1192 15 (fn r => <xml>{[r.A]},{[r.C]};</xml>);
adamc@1192 16 return <xml><body>
adamc@1192 17 {v}<br/>
adamc@1192 18 {v'}
adamc@1192 19 </body></xml>