| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Justin Pryzby <pryzby(at)telsasoft(dot)com> |
| Cc: | Greg Stark <stark(at)mit(dot)edu>, Dag Lem <dag(at)nimrod(dot)no>, "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, Tatsuro Yamada <tatsuro(dot)yamada(dot)tf(at)nttcom(dot)co(dot)jp>, Julien Rouhaud <rjuju123(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Add psql command to list constraints |
| Date: | 2022-03-25 19:24:34 |
| Message-ID: | CA+TgmoY_hcPJ6u6bjp5pfQUtQYzH92Ti-na=jEopwORhfLZJOA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Mar 25, 2022 at 3:20 PM Justin Pryzby <pryzby(at)telsasoft(dot)com> wrote:
> \dX is similar, and I remember wondering whether it was really useful/needed.
> The catalog tables are exposed and documented for a reason, and power-users
> will learn to use them.
I don't think that \dX is comparable, because I don't think we should
regard extended statistics as a table object. Indeed, generalizing
extended statistics so that they can be generated on a join seems to
me to be one of the most important things we could do in that area.
--
Robert Haas
EDB: http://www.enterprisedb.com
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