annotate tests/relops.ur @ 253:7f6620853c36
Monoized a WHERE clause with a comparison
author |
Adam Chlipala <adamc@hcoop.net> |
date |
Sun, 31 Aug 2008 14:27:01 -0400 |
parents |
71bafe66dbe1 |
children |
645d0e8da643 |
rev |
line source |
adamc@229
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1 table t1 : {A : int, B : string, C : float}
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2 table t2 : {A : float, D : int}
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3
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4 val q1 = (SELECT * FROM t1
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5 UNION SELECT * FROM t1)
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6 val q2 = (SELECT t1.A, t1.B FROM t1 WHERE t1.A = 0
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7 INTERSECT SELECT t1.B, t1.A FROM t1 WHERE t1.B = t1.B)
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8 val q3 = (SELECT t1.A, t1.B, t1.C FROM t1 WHERE t1.A = 0
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9 INTERSECT SELECT * FROM t1 WHERE t1.B = 'Hello world!'
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10 EXCEPT SELECT * FROM t1 WHERE t1.A < t1.A)
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