Re: [mmoncure@gmail.com: Re: [GENERAL] array_to_set functions]

On Wed, Aug 15, 2007 at 06:47:05AM +0200, Pavel Stehule wrote:
> 2007/8/14, Decibel! <decibel(at)decibel(dot)org>:
> > On Tue, Aug 14, 2007 at 05:38:33PM +0200, Pavel Stehule wrote:
> > > 2007/8/14, Bruce Momjian <bruce(at)momjian(dot)us>:
> > > >
> > > > TODO item?
> > > >
> > > > + If your life is a hard drive, Christ can be your backup. +
> > > >
> > > > ---------------------------(end of broadcast)---------------------------
> > > > TIP 6: explain analyze is your friend
> > >
> > > I am against. It's too simple do it in SQL language.
> >
> > Why make everyone who works with arrays create a function just to do
> > this? Something that's of use to common users should be included, simple
> > or not.
> > --
>
> Unpacking array is more SQL construct for me, than SRF function. With
> function you cannot conntrol behave of unpacking. With SQL construct I
> can

Huh? You can do a DISTINCT or an ORDER BY on the output of a SRF.

> SELECT DISTINCT a(i) FROM generate_series ... remove duplicities
> SELECT a(i) FROM generate_series ORDER BY .. sorted output
> etc
>
> But I can
>
> SELECT * FROM generate_series(ARRAY[1,3,4,5,7,10]);
>
> else
> FUNCTION generate_series(anyarray) returns setof any
--
Decibel!, aka Jim Nasby decibel(at)decibel(dot)org
EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)