annotate tests/relops.lac @ 243:2b9dfaffb008

Transactions and queries, at source level
author Adam Chlipala <adamc@hcoop.net>
date Thu, 28 Aug 2008 14:48:33 -0400
parents 016d71e878c1
children
rev   line source
adamc@229 1 table t1 : {A : int, B : string, C : float}
adamc@229 2 table t2 : {A : float, D : int}
adamc@229 3
adamc@229 4 val q1 = (SELECT * FROM t1
adamc@229 5 UNION SELECT * FROM t1)
adamc@229 6 val q2 = (SELECT t1.A, t1.B FROM t1 WHERE t1.A = 0
adamc@229 7 INTERSECT SELECT t1.B, t1.A FROM t1 WHERE t1.B = t1.B)
adamc@229 8 val q3 = (SELECT t1.A, t1.B, t1.C FROM t1 WHERE t1.A = 0
adamc@229 9 INTERSECT SELECT * FROM t1 WHERE t1.B = 'Hello world!'
adamc@229 10 EXCEPT SELECT * FROM t1 WHERE t1.A < t1.A)