Mensanator wrote:
No it isn't. Nothing is not 0, check with MS-Access, for instance:
Null + 1 returns Null. Any arithmetic expression involving a
Null evaluates to Null. Adding something to an unknown returns
an unknown, as it should.
It is a logical fallacy to equate unknown with 0.
http://en.wikipedia.org/wiki/Empty_sum
"In mathematics, the empty sum, or nullary sum, is the result of adding
no numbers, in summation for example. Its numerical value is zero."
</F>
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