From: "Edward W. Rouse" <erouse@comsquared.com>
To: <pgsql-sql@postgresql.org>
References: <00ee01cc9a4e$2b41f050$81c5d0f0$@com>
	<B63820AA-AA3A-4B45-B7EB-0955F1975C77@excoventures.com>
In-Reply-To: <B63820AA-AA3A-4B45-B7EB-0955F1975C77@excoventures.com>
Subject: Re: intervals
Date: Thu, 3 Nov 2011 13:56:09 -0400
Message-ID: <00f501cc9a51$de2c1080$9a843180$@com>
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That was part of the problem. Thanks for the info.

> -----Original Message-----
> From: pgsql-sql-owner@postgresql.org [mailto:pgsql-sql-
> owner@postgresql.org] On Behalf Of Jonathan S. Katz
> Sent: Thursday, November 03, 2011 1:41 PM
> To: Edward W. Rouse
> Cc: pgsql-sql@postgresql.org
> Subject: Re: [SQL] intervals
> 
> Hi Edward,
> 
> "LIMIT" is a keyword, which is where you are getting your errors.  Did
> you try a different variable name?
> 
> Best,
> 
> Jonathan
> 
> On Nov 3, 2011, at 1:29 PM, Edward W. Rouse wrote:
> 
> > I am writing a procedure and am having a little difficulty with an
> interval.
> > In the DECLARE section I have:
> >
> > expire interval := '30 days'::interval;
> >
> > which seems to work fine. In the BEGIN block I need to pull out the
> number
> > of days from a table and update the expire interval to that. But I
> can't
> > quite seem to get the replacement correct.
> >
> > First I use "SELECT value into limit from" to get the new limit
> value. The
> > value is text, but I have also tried with SELECT (value::integer)
> into limit
> > from" with the same result. The error occurs here:
> >
> > expire := '%  days'::interval, limit;
> >
> > Now I have tried several different ways to get a new interval, such
> as '' ||
> > limit || days''::interval; and other various differently quoted
> variations,
> > but haven't found the one that works yet. I am still trying various
> > combinations, but thought that someone on the list has probably done
> this
> > already. I may, in fact, be doing it entirely wrong. So if someone
> knows the
> > correct/better/easier way to create a dynamic interval I'd appreciate
> a
> > clue.
> >
> > Thanks.
> >
> >
> > Edward W. Rouse
> >
> >
> >
> >
> > --
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