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From: Richard Huxton <dev@archonet.com>
Organization: Archonet Ltd
To: =?iso-8859-1?q?Egy=FCd=20Csaba?= <csegyud@freemail.hu>,
	pgsql-sql@postgresql.org
Subject: Re: Join or Where?
Date: Thu, 26 Jun 2003 14:09:01 +0100
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	<003301c33bd5$198f7250$230a0a0a@compaq>
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On Thursday 26 Jun 2003 12:21 pm, Egy=FCd Csaba wrote:
> Urgent Help : Use of return from function/procedure.Hi,
> could anybody tell me what can be the difference between these queries?
> There are a big difference but I can't understand the reasons. For some
> reasons the firs query calculates getup column in a wrong way. It allways
> devides with 10. (???) While the getupquantity column comes well.
>
> With the second query everything is ok.

1 > select (select getupquantity from t_products where id=3Dproductid) as
2 > getupquantity,
3 >        quantity,
4 >        (select quantity/getupquantity) as getup
5 > from t_stockchanges, t_products
6 > where (getupquantity<>0)
7 > limit 30;

I don't think the t_products in the first line is the same as that in the=
=20
fifth line - that'd surely mess up your values.

--=20
  Richard Huxton