Message-ID: <4F187214.1010306@gmail.com>
Date: Thu, 19 Jan 2012 11:42:12 -0800
From: Adrian Klaver <adrian.klaver@gmail.com>
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To: Samuel Gendler <sgendler@ideasculptor.com>
CC: pgsql-sql@postgresql.org, Gary Stainburn <gary.stainburn@ringways.co.uk>
Subject: Re: date range to set of dates expansion
References: <201201190713.34333.gary.stainburn@ringways.co.uk>
	<201201191516.16802.gary.stainburn@ringways.co.uk>
	<201201191559.27698.gary.stainburn@ringways.co.uk>
	<201201190820.06564.adrian.klaver@gmail.com>
	<CAEV0TzBOpA+VdkQ-NeW5dhEc5EWOxFASsoogF0FCL1K_P_q_cA@mail.gmail.com>
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On 01/19/2012 09:17 AM, Samuel Gendler wrote:
>
>
> On Thu, Jan 19, 2012 at 8:20 AM, Adrian Klaver <adrian.klaver@gmail.com
> <mailto:adrian.klaver@gmail.com>> wrote:
>
>     On Thursday, January 19, 2012 7:59:27 am Gary Stainburn wrote:
>      > The following code works in 8.4 but not 8.3.
>      > Anyone know why, or what I need to do to change it?
>      >
>      > SELECT aid, asid,
>      >        date_range (asdate, afdate)::date AS asdate,
>      >        acomments
>      > FROM availability
>      >
>      > In 8.4 it returns the expanded dataset as required. In 8.3 I get:
>      >
>      > ERROR:  set-valued function called in context that cannot accept
>     a set
>      > CONTEXT:  PL/pgSQL function "date_range" line 4 at RETURN NEXT
>
>     As to why it works in 8.4 vs 8.3
>
>     http://www.postgresql.org/docs/8.4/interactive/release-8-4.html
>
>     "Support set-returning functions in SELECT result lists even for
>     functions that
>     return their result via a tuplestore (Tom)
>
>     In particular, this means that functions written in PL/pgSQL and
>     other PL
>     languages can now be called this way.'
>
>     In 8.3- I believe you could only call it as
>
>     SELECT * from date_range (asdate, afdate)::date AS asdate;
>
>
> I don't think you can have that cast there when it is in the
> from-clause.

That was a cut and paste error on my part, I just copied that line from 
the original query.

>


-- 
Adrian Klaver
adrian.klaver@gmail.com