2010/6/22 Satoshi Nagayasu <satoshi.nagayasu@gmail.com>:
> 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?
>
> Regards,
>
> ---------------------------------------------------------------------
> template1=# SELECT version();
> version
> ------------------------------------------------------------------------------------------------------------
> PostgreSQL 8.4.2 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 4.1.2 20071124 (Red Hat 4.1.2-42), 32-bit
> (1 row)
>
> template1=# SELECT -2147483647::integer;
> ?column?
> -------------
> -2147483647
> (1 row)
>
> template1=# SELECT -2147483648::integer;
> ERROR: integer out of range
> template1=# SELECT +2147483648::integer;
> ERROR: integer out of range
> template1=# SELECT +2147483647::integer;
> ?column?
> ------------
> 2147483647
> (1 row)
>
> template1=#
> ---------------------------------------------------------------------
>
Hmm... yes, that's not what I'd expect either:
postgres=# SELECT -32768::smallint;
ERROR: smallint out of range
postgres=# SELECT -9223372036854775808::bigint;
ERROR: bigint out of range
I think those min values are all out by 1.
Thom
