| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Gregory Stark <stark(at)enterprisedb(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Michael Glaesemann <grzm(at)seespotcode(dot)net>, Ben Tilly <btilly(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: SQL feature requests |
| Date: | 2007-08-23 17:38:10 |
| Message-ID: | 20070823173810.GC31461@alvh.no-ip.org |
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| Lists: | pgsql-hackers |
Gregory Stark escribió:
> I get this about once a day because I frequently type this ad-hoc query and
> always forget to put the alias in the first time:
>
> postgres=# select count(*),n from (select count(*) as n from test group by i) group by n;
> ERROR: subquery in FROM must have an alias
> HINT: For example, FROM (SELECT ...) [AS] foo.
Exactly one extra keystroke gets you a non-error answer:
alvherre=# select count(*),n from (select count(*) as n from test group by i)a group by n;
--
Alvaro Herrera http://www.PlanetPostgreSQL.org/
"Si quieres ser creativo, aprende el arte de perder el tiempo"
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