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The Natural Philosopher
 
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Default Re: Help! behaviour changed in some upgrade on select! - 03-04-2010 , 03:49 PM





Lennart wrote:
Quote:
On 4 mar, 13:53, The Natural Philosopher <t... (AT) invalid (DOT) invalid> wrote:
[...]
The question is, is NULL true, or false!!

Neither, null is null

It gets more confusing, because both data bases return the same thing in
the case of:

select id from orders where (NULL!='yes')


is the standard "not equals" operator. Many dbms accept != as well,
but it is better to use <> since it is more likely to work
Too much C in the SQL I am afraid.

:-(

Quote:
[...]

/Lennart

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