Re: Help with text(decimal) to hex conversion
| От | Wei Shan |
|---|---|
| Тема | Re: Help with text(decimal) to hex conversion |
| Дата | |
| Msg-id | CAFe9ZTo=3vRUOOxWatWfg7k0JO5d_xLNiqQ+HNtceg-EqKA97Q@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: Help with text(decimal) to hex conversion (Merlin Moncure <mmoncure@gmail.com>) |
| Ответы |
Re: Help with text(decimal) to hex conversion
Re: Help with text(decimal) to hex conversion |
| Список | pgsql-novice |
Hi all,
The method suggested so far doesn't actually work.
I'm trying to convert a text datatype to hex. The maximum hex returned will be 20 octets. I'm hoping to do it within PostgreSQL so I can call it like a function (to_hex).
psql> select column from table limit 5;
---------------------
4849018213204493635
4939764883475860925
1006304053701792827
1007718049538635498
1010517297675790156
(5 rows)
psql> select to_hex(column_name::bigint) from tablelimit 5;
to_hex
------------------
434b2c5fab740543
448d91fd51870dbd
df71c3488ee543b
dfc223a187ff6ea
e061420d75a674c
(5 rows)
I also tried the following suggestions.
psql> select encode(column::bytea,'hex') from table limit 1;
encode
----------------------------------------
31303037373138303439353338363335343938
psql> select convert_from(decode('31303037373138303439353338363335343938', 'hex'), 'utf8');
convert_from
---------------------
1007718049538635498
Thanks!
On 22 March 2016 at 06:44, Merlin Moncure <mmoncure@gmail.com> wrote:
On Mon, Mar 21, 2016 at 3:30 AM, Wei Shan <weishan.ang@gmail.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
Regards,
Ang Wei Shan
Ang Wei Shan
В списке pgsql-novice по дате отправления: