Re: 8.4 release notes proof reading 1/2

Andrew Gierth wrote:
> >>>>> "Guillaume" == Guillaume Smet <guillaume(dot)smet(at)gmail(dot)com> writes:
>
> Guillaume> - "While semi-joins merely replace existing IN joins,
> Guillaume> anti-joins are a new capability for NOT IN and NOT EXIST
> Guillaume> clauses (Tom) This improves optimization possibilities."
> Guillaume> -> remove the "(Tom)", s/EXIST/EXISTS/
>
> Also s/NOT IN and // (anti-joins are not used for NOT IN due to the
> awkward semantics of nulls). Should possibly also mention the fact that
> some outer joins can be planned as anti-joins too.

Thanks, text updated:

While semi-joins merely replace existing IN joins, anti-joins
are a new capability for NOT EXISTS clauses (Tom) This improves
optimization possibilities.

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Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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