Message-ID: <3E1C2AA2.3000103@klaster.net>
Date: Wed, 08 Jan 2003 14:41:54 +0100
From: Tomasz Myrta <jasiek@klaster.net>
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To: Tambet Matiisen <t.matiisen@aprote.ee>
Cc: pgsql-sql@postgresql.org
Subject: Re: full join in view
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Tambet Matiisen wrote:

> I'm making a report in Crystal Reports, which makes use of full join. 
> As Crystal Reports does not support full join natively, I created a 
> view which contains the join and based my report on that view. The 
> report has also a parameter to filter only subset of rows from view. 
> My problem is, that when selecting from this view, optimizer never 
> uses indexes of neither of two tables.
>
> I understand, that optimizing the filter to the bottom of query tree 
> may not always give the same result with full join (although it should 
> in my case). Alternative could be to use function returning a table, 
> but I doubt I could use this function from Crystal Reports. What other 
> options I have?
>
>   Tambet

Can you add some sql examples - table & index definition, view definition?
If your view doesn't contain other views or sub-selects, postgres should 
use indexes.
Tomasz Myrta