Re: Help with text(decimal) to hex conversion

On Mon, Mar 21, 2016 at 3:30 AM, Wei Shan <weishan(dot)ang(at)gmail(dot)com> wrote:
> Hi all,
>
> There's a column that has datatype of text. The conversion will work fine
> for some of the rows.
>
> psql> select to_hex(data::bigint)from table limit 5;
> to_hex
> ------------------
> 499602d2
> 499602d2
> 4fa83d1136d920ef
> 2e1b71785c8e11c
> 53ff4c2824860fb8
>
>
> However, for some records, the original data is too large for casting.
>
> ERROR: value "14481874327766585215" is out of range for type bigint
>
> Any idea how to overcome this? to_hex function only accepts int or bigint.

postgres=# select encode('foo', 'hex');
encode
────────
666f6f
(1 row)

postgres=# select convert_from(decode('666f6f', 'hex'), 'utf8');
convert_from
──────────────
foo
(1 row)

merlin