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help / color / mirror / Atom feedFrom: Magnus Hagander <[email protected]>
To: Satoshi Nagayasu <[email protected]>
Cc: pgsql-docs <[email protected]>
Subject: Re: INTEGER range ("-2147483648" is not accepted.)
Date: Tue, 22 Jun 2010 10:44:42 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
On Tue, Jun 22, 2010 at 10:27 AM, Satoshi Nagayasu
<[email protected]> wrote:
> Hi all,
>
> I've found a bit strange thing on the INTEGER range in the official manual.
>
> http://www.postgresql.org/docs/8.4/interactive/datatype-numeric.html
>
> According to the official manual, the INTEGER range is "-2147483648 to +2147483647".
> However, my example in below shows that "-2147483648" is not accepted.
>
> Is this correct? Any suggestions?
>
> template1=# SELECT -2147483648::integer;
> ERROR: integer out of range
This gets parsed as "cast 2147483648 to integer, then take it
negative". Which overflows, because it can only go up to 2147483647.
What you want is:
postgres=# select (-2147483648)::integer;
int4
-------------
-2147483648
(1 row)
--
Magnus Hagander
Me: http://www.hagander.net/
Work: http://www.redpill-linpro.com/
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