Mercurial > urweb
annotate tests/relops.ur @ 255:69d337f186eb
Monoized GROUP BY
| author | Adam Chlipala <adamc@hcoop.net> |
|---|---|
| date | Sun, 31 Aug 2008 15:04:10 -0400 |
| parents | 71bafe66dbe1 |
| children | 645d0e8da643 |
| 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) |