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help / color / mirror / Atom feedFrom: Adrian Klaver <adrian.klaver@aklaver.com>
To: Filip Rembiałkowski <filip.rembialkowski@gmail.com>
To: Community PostgreSQL <pgsql-sql@postgresql.org>
Subject: Re: INT8 / float casting question
Date: Fri, 31 Oct 2014 08:29:48 -0700
Message-ID: <5453AAEC.8050505@aklaver.com> (raw)
In-Reply-To: <CAP_rwwksWXsxon-fbG5itzXPjCHAY9cXoKH139jVV1J3J5w+8A@mail.gmail.com>
References: <CAP_rwwksWXsxon-fbG5itzXPjCHAY9cXoKH139jVV1J3J5w+8A@mail.gmail.com>
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On 10/31/2014 07:58 AM, Filip Rembiałkowski wrote:
> psql.bin (9.3.4, server 9.3.5)
> Type "help" for help.
>
> dev=# select (2^63-1)::INT8;
> ERROR: bigint out of range
>
> Does it HAVE to be so?
>
>
> http://en.wikipedia.org/wiki/9223372036854775807
It seems to be not a problem with the number but the exponentiation and
casting:
test=# create table bigint_test (int_fld int8);
CREATE TABLE
test=# insert into bigint_test values (9223372036854775807);
INSERT 0 1
test=# select * from bigint_test ;
int_fld
---------------------
9223372036854775807
test=# select 2^63-1;
?column?
----------------------
9.22337203685478e+18
(1 row)
test=# select (2^63-1)::int8;
ERROR: bigint out of range
>
>
>
> Thanks
> Filip
>
>
--
Adrian Klaver
adrian.klaver@aklaver.com
--
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To: pgsql-sql@postgresql.org
Cc: adrian.klaver@aklaver.com, filip.rembialkowski@gmail.com
Subject: Re: INT8 / float casting question
In-Reply-To: <5453AAEC.8050505@aklaver.com>
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