From: Tomasz Myrta <jasiek@klaster.net>
To: Tambet Matiisen <t.matiisen@aprote.ee>
Cc: pgsql-sql@postgresql.org
Subject: Re: full join in view
Date: Wed, 08 Jan 2003 14:41:54 +0100
Message-ID: <3E1C2AA2.3000103@klaster.net> (raw)
In-Reply-To: <81132473206F3A46A72BD6116E1A06AE1B14BC@black.aprote.com>
References: <81132473206F3A46A72BD6116E1A06AE1B14BC@black.aprote.com>
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
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To: pgsql-sql@postgresql.org
Cc: jasiek@klaster.net, t.matiisen@aprote.ee
Subject: Re: full join in view
In-Reply-To: <3E1C2AA2.3000103@klaster.net>
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