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comparison tests/group_by.lac @ 227:524e10c91478

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GROUP BY and HAVING
author Adam Chlipala <adamc@hcoop.net>
date Thu, 21 Aug 2008 14:09:08 -0400
parents b0041cc7e5f7
children 19e5791923d0
comparison
equal deleted inserted replaced
226:b0041cc7e5f7 227:524e10c91478
1 table t1 : {A : int, B : string, C : float} 1 table t1 : {A : int, B : string, C : float}
2 table t2 : {A : float, D : int} 2 table t2 : {A : float, D : int}
3 3
4 val q1 = (SELECT * FROM t1 GROUP BY t1.B) 4 val q1 = (SELECT * FROM t1 GROUP BY t1.B)
5 val q2 = (SELECT * FROM t1, t2 GROUP BY t1.B, t2.D, t1.A) 5 val q2 = (SELECT * FROM t1, t2 GROUP BY t1.B, t2.D, t1.A)
6
7 val q3 = (SELECT * FROM t1 WHERE t1.A = 0 GROUP BY t1.B)
8 val q4 = (SELECT * FROM t1 WHERE t1.A = 0 GROUP BY t1.C HAVING t1.C < 0.2)
9
10 val q5 = (SELECT t1.A, t2.D FROM t1, t2 GROUP BY t2.D, t1.A)
11 val q6 = (SELECT t1.A, t2.D FROM t1, t2 WHERE t1.C = 0.0 GROUP BY t2.D, t1.A HAVING t1.A = 0 AND t2.D = 17)