On Wed, Mar 31, 2010 at 2:56 AM, Takahiro Itagaki
> "Robert Haas" <robertmhaas(at)gmail(dot)com> wrote:
>> > * (seq_page_cost/(random_page_cost))
>> > * EXCLUDE constraints has no tags to be linked.
>> > * "EXCLUDE constraints" is not indexed from the Index page.
>> CREATE TABLE ... CONSTRAINT ... EXCLUDE rather than CREATE TABLE
>> CONSTRAINT ... EXCLUDE.
> Here is a patch to fix the documentation.
> For exclusion constraints, I added a tag "SQL-CREATETABLE-exclude"
> to <varlistentry> of EXCLUDE in CREATE TABLE documentation. Also,
> "Exclusion constraints" section is added to the constraints doc.
> But the section is very short and just links to the CREATE TABLE doc.
> We could move some contents from CREATE TABLE to the constraints doc.
Exclusion constraints ensure that that if any two rows are compared on
the specified column(s) or expression(s) using the specified
operator(s), not all of these comparisons will return
I think that's backwards - the last clause should say "none of those
comparisons will return <literal>TRUE</>".
Unless I'm confused.
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