Mercurial > urweb
diff tests/relops.lac @ 229:016d71e878c1
Relational operators; string literals for SQL
| author | Adam Chlipala <adamc@hcoop.net> |
|---|---|
| date | Thu, 21 Aug 2008 15:27:04 -0400 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tests/relops.lac Thu Aug 21 15:27:04 2008 -0400 @@ -0,0 +1,10 @@ +table t1 : {A : int, B : string, C : float} +table t2 : {A : float, D : int} + +val q1 = (SELECT * FROM t1 + UNION SELECT * FROM t1) +val q2 = (SELECT t1.A, t1.B FROM t1 WHERE t1.A = 0 + INTERSECT SELECT t1.B, t1.A FROM t1 WHERE t1.B = t1.B) +val q3 = (SELECT t1.A, t1.B, t1.C FROM t1 WHERE t1.A = 0 + INTERSECT SELECT * FROM t1 WHERE t1.B = 'Hello world!' + EXCEPT SELECT * FROM t1 WHERE t1.A < t1.A)