From: | Adrian Klaver <adrian(dot)klaver(at)gmail(dot)com> |
---|---|
To: | pgsql-sql(at)postgresql(dot)org |
Cc: | Gary Stainburn <gary(dot)stainburn(at)ringways(dot)co(dot)uk> |
Subject: | Re: date range to set of dates expansion |
Date: | 2012-01-19 16:20:06 |
Message-ID: | 201201190820.06564.adrian.klaver@gmail.com |
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Lists: | pgsql-sql |
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;
>
> Is there a way to use the integer only generate_series in 8.3 to generate
> dates by typecasting to/from integers?
--
Adrian Klaver
adrian(dot)klaver(at)gmail(dot)com
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