Subject: Re: intervals
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From: "Jonathan S. Katz" <jonathan.katz@excoventures.com>
In-Reply-To: <00ee01cc9a4e$2b41f050$81c5d0f0$@com>
Date: Thu, 3 Nov 2011 13:41:16 -0400
Cc: <pgsql-sql@postgresql.org>
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Message-Id: <B63820AA-AA3A-4B45-B7EB-0955F1975C77@excoventures.com>
References: <00ee01cc9a4e$2b41f050$81c5d0f0$@com>
To: "Edward W. Rouse" <erouse@comsquared.com>

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:
>=20
> expire interval :=3D '30 days'::interval;
>=20
> 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.
>=20
> 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:
>=20
> expire :=3D '%  days'::interval, limit;
>=20
> 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.
>=20
> Thanks.
>=20
>=20
> Edward W. Rouse
>=20
>=20
>=20
>=20
> --=20
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