| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Josh Kupershmidt <schmiddy(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: patch: Distinguish between unique indexes and unique constraints |
| Date: | 2010-04-18 15:41:37 |
| Message-ID: | n2g603c8f071004180841m2c53ae89qd7d16857437009a3@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Sun, Apr 18, 2010 at 11:23 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
>> You know, I've never really understood the difference between these
>> two types of things, or why we need to support both. Which may be
>> just because I'm slow?
>
> Unique constraints are defined by the SQL standard, and have a syntax
> that can't support a lot of the extensions that CREATE INDEX allows.
> There's also restrictions in the information_schema views.
> So unifying the two concepts completely would be a mess.
I thought it might be something like that.
Josh - you may want to add your patch here:
https://commitfest.postgresql.org/action/commitfest_view/open
...Robert
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