Re: Function's LEAST, GREATEST and DECODE (Oracle vararg

Hello,

I sended version with only LEAST and GREATEST
http://archives.postgresql.org/pgsql-patches/2005-06/msg00185.php

this patch contains diff files for NEXT_DAY and LAST_DAY function too,
which I think are generally usefull.

There is duplicity with CASE.

Regards
Pavel

On Tue, 21 Jun 2005, Bruce Momjian wrote:

>
> This patch looks good.  I know greater/least are seen as valuable, but
> do we want decode()?  It seems OK to me but I thought there was concern
> about it in the past because it duplicated some existing functionality.
>
> ---------------------------------------------------------------------------
>
> Pavel Stehule wrote:
> > Hello
> >
> >     This patch contains three oracle users missing functions. But I
> > hope can be usefull for all PostgreSQL users (users vote me ;-) Certainly
> > LEAST and GREATEST, which has not analogy. Using of DECODE is similar
> > CASE, but with some differences. There exist some workarounds in plpgsql,
> > but are ugly and neefective, or impossible (function DECODE rotate type of
> > args). All functions share code.
> >
> > David, please, can you enhance documentation?
> >
> > pokus=# select least(1,2,3,4);
> >  least
> > -------
> >      1
> > (1 row)
> >
> > pokus=# select greatest(1,2,3,4);
> >  greatest
> > ----------
> >         4
> > (1 row)
> >
> > pokus=# select decode('c','a',2,1);
> >  decode
> > --------
> >       1
> >
> > Best regards
> > Pavel Stehule
> >
> >
> >
>
> Content-Description:
>
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>
> >
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>