Re: Documentation error

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От Richard Guo
Тема Re: Documentation error
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Msg-id CAMbWs4-V6M7hCdOgU5a0QHiKCywzV83DhP5-EYVWcS-2Fo0nPw@mail.gmail.com
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Ответ на Re: Documentation error  (Richard Guo <guofenglinux@gmail.com>)
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On Thu, Oct 20, 2022 at 11:32 AM Richard Guo <guofenglinux@gmail.com> wrote:
On Wed, Oct 19, 2022 at 10:07 PM Ian R. Campbell <ian.campbell@thepathcentral.com> wrote:
Please see this documentation page: https://www.postgresql.org/about/featurematrix/detail/392/

It states, "By default, NULL values are not treated as distinct entries."

It should state, "By default, NULL values are treated as distinct entries."
 
Correct. +1. Good catch.
 
The second sentence in this page is also incorrect.

"Specifying NULLS NOT DISTINCT on unique indexes / constraints will
cause NULL values to be treated distinctly."

It really should be:

"Specifying NULLS NOT DISTINCT on unique indexes / constraints will
cause NULL values to not be treated distinctly."

Thanks
Richard

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