Re: What can I use as a [non-aggregate] minimum function

All you need is a "max" function with two arguments.  To find the
max of four numbers you can do this

            max(max(max(a,b),c),d)

It is not even all that ugly.

Tom Lane wrote:
>
> "=?iso-8859-1?Q?Paul_Wehr?=" <postgresql@industrialsoftworks.com> writes:
> > Since you didn't volunteer "just use not_aggregate_max()", I'm assuming
> > there's no built-in thing, so the follow-up question(s) would be:
> >   1) can a function be defined with a variable number of arguments
>
> No, although sometimes you can fake it by defining a family of functions
> with the same name and different numbers of arguments.
>
> >   2) can a function be created that calls itself (i.e. recursive)
>
> Sure, although I don't see how that helps in this case.
>
> >   3) can you do it for me? :)
>
> Nope, got too many things to do already...
>
>                         regards, tom lane
>
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