| From: | Matteo Beccati <php(at)beccati(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | andrew(at)supernews(dot)com, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: @ versus ~, redux |
| Date: | 2006-09-06 09:52:55 |
| Message-ID: | 44FE9A77.80209@beccati.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Tom Lane wrote:
> The existing geometric containment tests seem to be nonstrict, so if we
> wanted to leave room to add strict ones later, it might be best to
> settle on
>
> x @>= y x contains or equals y
> x <=@ y x is contained in or equals y
>
> reserving @> and <@ for future strict comparison operators.
Since the choice of @> and <@ comes from current ltree operators I'd
like to point out that they are non-strict for ltree, and this could add
a little bit of inconsistence.
Best regards
--
Matteo Beccati
http://phpadsnew.com
http://phppgads.com
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