Re: Comments on Exclusion Constraints and related datatypes

Simon Riggs <simon@2ndQuadrant.com> writes:
> * Exclusion indexes are created with the suffix "_exclusion". That's a
> very long suffix and will overflow most defined reports/screens. It
> would be much better to use just "_excl",

No particular objection here.

> * Circles, Boxes and other geometric datatypes defined "overlaps" to
> include touching shapes. So
> SELECT circle '((0,0), 1)' && circle '((2,0),1)';
> is true, which is fairly strange and makes those datatypes very counter
> intuitive. Considering they are instructional aids, this is bad.

You're approximately twenty years too late to propose changing that,
even if it were clearly a good idea which I doubt.

> Also, if the only common sense usage of exclusion constraints is GIST,
> why does the syntax default to "btree"?

Since your "if" isn't a correct statement, the complaint doesn't follow.
        regards, tom lane