Re: Passing input to a view?

From: "A(dot) Kretschmer" <andreas(dot)kretschmer(at)schollglas(dot)com>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: Passing input to a view?
Date: 2007-05-10 06:14:27
Message-ID: 20070510061427.GA16765@a-kretschmer.de
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am Thu, dem 10.05.2007, um 14:03:53 +0800 mailte Paul Lambert folgendes:
> Is it possible to define a view to use input parameters rather than a
> hard-wired value in a where clause?

As far as i know, no.

> Instead of having it set to 1-Jan-2007 and 10-May-2007 for the dates,
> can I specify that those values should be passed to the view? Or would I
> need to change this to an SQL language function?
>
> I can't find anything in the documentation that answers this, but maybe
> I'm not looking hard enough.

You can write a so called 'set returning function' instead.
Read more:
http://www.postgresql.org/docs/current/static/xfunc-sql.html#XFUNC-SQL-TABLE-FUNCTIONS

Andreas
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Andreas Kretschmer
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