| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
| Cc: | Rob Wultsch <wultsch(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Bernd Helmle <mailings(at)oopsware(dot)de>, Guillaume Lelarge <guillaume(at)lelarge(dot)info>, "jd(at)commandprompt(dot)com" <jd(at)commandprompt(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: SHOW TABLES |
| Date: | 2010-07-17 02:08:48 |
| Message-ID: | AANLkTin5_7Qvdj98cFd+qwAtThjeqZ8f+AYDro4H_pW=@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Fri, Jul 16, 2010 at 1:52 PM, Heikki Linnakangas
<heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
> That's for MySQL. I come from a DB2 background, and when I started using
> psql years ago, I often typed "LIST TABLES" without thinking much about it.
> Not SHOW TABLES, but LIST TABLES.
>
> I bet Oracle users coming to PostgreSQL will try "DESC". Not SHOW TABLES. As
> Simon listed, every DBMS out there has a different syntax for this.
>
> I have nothing against SHOW TABLES (it might cause conflicts in grammar
> though), but if we're going to cater to people migrating from MySQL, I feel
> we should cater to people migrating from other products too. But surely
> we're not going to implement 10 different syntaxes for the same thing! We
> could, however, give a hint in the syntax error in all those cases. That way
> we're not on the hook to maintain them forever, and we will be doing people
> a favor by introducing them to the backslash commands or information schema,
> which are more powerful.
One advantage of using LIST is that LIST doesn't already mean
something else, which would simplify the grammar handling.
LIST [SYSTEM | ALL] <any-object-type-in-plural-form>
DESCRIBE <name-of-table>
Why must the backslash commands be more powerful than any alternative
we might come up with?
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise Postgres Company
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Stephen Frost | 2010-07-17 04:02:44 | Re: SHOW TABLES |
| Previous Message | Tom Lane | 2010-07-17 00:45:55 | Re: ALTER TABLE SET STATISTICS requires AccessExclusiveLock |