Re: multiple paramters in aggregate function

From: Karsten Hilbert <Karsten(dot)Hilbert(at)gmx(dot)net>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: multiple paramters in aggregate function
Date: 2009-08-20 12:22:24
Message-ID: 20090820122224.GA5532@merkur.hilbert.loc
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On Thu, Aug 20, 2009 at 10:36:37AM +0300, Sim Zacks wrote:

> In other words, I have a conversion table of all different units. If
> there is no conversion between 2 units (such as volume and area) then
> the sum returns null.

Shouldn't that return NULL IOW unknown ?

Karsten
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