Date: Thu, 12 Jun 2003 06:49:33 -0500
From: Bruno Wolff III <bruno@wolff.to>
To: pgsql-sql@postgresql.org
Subject: Re: How to make a IN without a table... ?
Message-ID: <20030612114933.GA1285@wolff.to>
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References: <20030612091914.GA680@apartia.fr>
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On Thu, Jun 12, 2003 at 11:19:14 +0200,
  David Pradier <dpradier@apartia.fr> wrote:
> 
> In short, i want to calculate the result of the function my_function for
> some values of my_var1, cross by some values of my_var2.
> These values are not taken in a table, but put in directly.
> They are a lot, so i would prefer not to write the whole thing, line
> after line. (Let's say 10 values for the first, and 40 for the second =>
> 400 lines of code to maintain...)

If there aren't a huge number of values you can use union. (If there
are a large number then you probably want to load temp tables using
copy.) For example:
select myval1, myval2, f(myval1,myval2)
  from
    (select '1' union select '2' union select '3') as tab1 (myval1),
    (select '1' union select '2' union select '3') as tab2 (myval2);