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Saturday, February 11, 2006

And you thought OR was commutative...

I came across this at dbdebunk (ON THE NOTHING THAT’S WRONG WITH NULLS with Hugh Darwen, Fabian Pascal). Couldn't let that go so I tested it under 9i (9.1) and 10g (10.2) and got identical results. The last two statements are logically equivalent, but gives different results!

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