CODIGO MYSQL
select uid AS uid
, concat(
substring(uid, 25,2)
, ':', substring(uid, 27,2)
, ':', substring(uid, 29,2)
, ':', substring(uid, 31,2)
, ':', substring(uid, 33,2)
, ':', substring(uid, 35,2)
) AS uuid_to_mac
from (select uuid() uid) AS alias;
select uid AS uid
, concat(
substring(uid, 25,12)
) AS uuid_to_mac
from (select uuid() uid) AS alias;