Re: INTEGER range ("-2147483648" is not accepted.)

On Tue, Jun 22, 2010 at 10:27 AM, Satoshi Nagayasu
<satoshi(dot)nagayasu(at)gmail(dot)com> 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)

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Magnus Hagander
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