Re: [HACKERS] Make subquery alias optional in FROM clause

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От Andres Freund
Тема Re: [HACKERS] Make subquery alias optional in FROM clause
Дата
Msg-id 20170223025519.56iyhzbhlso76gkh@alap3.anarazel.de
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Ответ на Re: [HACKERS] Make subquery alias optional in FROM clause  (Robert Haas <robertmhaas@gmail.com>)
Список pgsql-hackers
On 2017-02-23 08:21:41 +0530, Robert Haas wrote:
> On Wed, Feb 22, 2017 at 10:33 PM, Nico Williams <nico@cryptonector.com> wrote:
> > On Wed, Feb 22, 2017 at 10:08:38AM -0500, Tom Lane wrote:
> >> Bernd Helmle <mailings@oopsware.de> writes:
> >> >> From time to time, especially during migration projects from Oracle to
> >> > PostgreSQL, i'm faced with people questioning why the alias in the FROM
> >> > clause for subqueries in PostgreSQL is mandatory. The default answer
> >> > here is, the SQL standard requires it.
> >>
> >> Indeed.  When I wrote the comment you're referring to, quite a few years
> >> ago now, I thought that popular demand might force us to allow omitted
> >> aliases.  But the demand never materialized.  At this point it seems
> >> clear to me that there isn't really good reason to exceed the spec here.
> >> It just encourages people to write unportable SQL code.
> >
> > I suspect most users, like me, just roll their eyes, grumble, and put up
> > with it rather than complain.  It's a pain point, but tolerable enough
> > that no one bothers to demand a change.  Now that it's been done though,
> > allow me to add my voice in favor of it!
> 
> +1 to all of that.

+1, too.



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