|From:||Jeff Davis <pgsql(at)j-davis(dot)com>|
|To:||Itagaki Takahiro <itagaki(dot)takahiro(at)gmail(dot)com>|
|Cc:||PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>|
|Subject:||Re: (9.1) btree_gist support for searching on "not equals"|
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Thank you for the review.
On Mon, 2010-07-12 at 17:17 +0900, Itagaki Takahiro wrote:
> (1) Exclusion constraints support for operators where "x <operator> x"
> is false (tiny patch)
> (2) btree_gist support for searching on <> ("not equals")
> Those patches should be committed at once because (2) requires (1) to work
> with EXCLUDE constraints. Also, (1) has no benefits without (2) because we
> have no use cases for <> as an index-able operator. Both patches are very
> simple and small, and worked as expected both "WHERE <>" and EXCLUDE
> constraints cases.
It appears that Tom already committed (1).
> I'd like to ask you to write additional documentation about btree_gist 
> that the module will be more useful when it is used with exclusion
> constraints together. Without documentation, no users find the usages.
Good idea, new patch attached.
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