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annotate tests/agg.ur @ 1349:87156c44824f

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Periodic tasks
author Adam Chlipala <adam@chlipala.net>
date Sat, 18 Dec 2010 15:17:09 -0500
parents 601a77af0477
children
rev   line source
adamc@235 1 table t1 : {A : int, B : string, C : float}
adamc@1187 2 table t2 : {A : float, D : int, E : option string}
adamc@235 3
adamc@1194 4 val q1 : sql_query [] _ _ = (SELECT COUNT( * ) FROM t1)
adamc@1194 5 val q2 : sql_query [] _ _ = (SELECT AVG(t1.A) FROM t1)
adamc@1194 6 val q3 : sql_query [] _ _ = (SELECT SUM(t1.C) FROM t1)
adamc@1194 7 val q4 : sql_query [] _ _ = (SELECT MIN(t1.B), MAX(t1.A) FROM t1)
adamc@1194 8 val q5 : sql_query [] _ _ = (SELECT SUM(t1.A) FROM t1 GROUP BY t1.B)
adamc@1194 9 val q6 = (SELECT COUNT(t2.E) FROM t2 GROUP BY t2.D)
adamc@237 10
adamc@1187 11 fun main () : transaction page =
adamc@1194 12 xml <- queryX q6 (fn r => <xml>{[r.1]};</xml>);
adamc@1194 13 xml2 <- queryX q4 (fn r => <xml>{[r.1]}, {[r.2]};</xml>);
adamc@1194 14 return <xml><body>{xml}<br/>{xml2}</body></xml>