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Newcomers DBPro Corner / Troubles with NOT!

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Enerzeal
13
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Joined: 20th Sep 2011
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Posted: 20th Sep 2011 21:54
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There is the code, basically to my fledgling eyes this looks correct. But as you can see from running it, it doesn't work as intended.

Can anyone talk me through it? Its really boggling my mind!
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WickedX
15
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Joined: 8th Feb 2009
Location: A Mile High
Posted: 21st Sep 2011 02:23
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The boolean operator (not b) is performed before the relational operater b = 1. Since b = 2, (not b) is false and 1 is true, so therefore (false = true) = false. Put parentheses around the relational operator (b = 1), since b does not equal 1 this become false. Therefore (not false) equals true.
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Quel
15
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Joined: 13th Mar 2009
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Posted: 21st Sep 2011 10:27
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Why not writing 'a<>1' there? Is there a difference?

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