Re: 8.1 Unique Index Issue/Bug???

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От Chris Browne
Тема Re: 8.1 Unique Index Issue/Bug???
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Msg-id 60wtahpb95.fsf@dba2.int.libertyrms.com
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Ответ на 8.1 Unique Index Issue/Bug???  ("Chris Hoover" <revoohc@gmail.com>)
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jd@commandprompt.com ("Joshua D. Drake") writes:
> That is why IS NULL can be placed in a unique index because it isn't
> actually there (in the theorectical sense).

In effect, NULL is not actually a value.
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