| From: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
|---|---|
| To: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Setve <setve(at)protonmail(dot)com> |
| Cc: | "pgsql-admin(at)lists(dot)postgresql(dot)org" <pgsql-admin(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: the difference between psql , createdb, dropuser |
| Date: | 2019-10-28 13:04:38 |
| Message-ID: | 7b4ed28f-961d-94da-bf28-800011ce8e5d@2ndquadrant.com |
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| Lists: | pgsql-admin |
On 2019-10-28 01:01, Jeff Janes wrote:
> On Sun, Oct 27, 2019 at 4:23 PM Setve <setve(at)protonmail(dot)com
> <mailto:setve(at)protonmail(dot)com>> wrote:
>
> I can execute the create user or create db .etc... command at a
> PostgreSQL interactive terminal so why are these commands
> "createuser , createdb , dropdb etc.... separately and what is their
> purpose?
> <https://www.reddit.com/r/PostgreSQL/comments/dnyr0n/i_can_execute_the_create_user_or_create_db_etc/>
>
>
> When scripting the initial set up of a system, it is easier to pass the
> name to one of these programs, then to embed them into the middle of an
> SQL command properly escaped and quoted. (The names of the programs
> themselves are ancient history, if starting from scratch they probably
> begin with "pg_")
Also, in the distant past, there was no CREATE USER command and the
createuser program inserted directly into pg_shadow.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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