SELECT COUNT(*) AS 'times', userid, name
FROM main
WHERE comedate <= DATE_SUB(CURDATE(),
                   INTERVAL 5 DAY)
GROUP BY userid ORDER BY times DESC LIMIT 0,2;

SELECT * FROM details WHERE 1;

select x.times,
  x.userid,
  x.name,
  d.age,
  d.location
from
(
  SELECT COUNT(*) AS 'times', userid, name
  FROM main
  WHERE comedate <= DATE_SUB(CURDATE(),
                     INTERVAL 5 DAY)
  GROUP BY userid
) x
left join details d
  on x.userid = d.userid

select x.times,
  x.userid,
  x.name,
  d.age,
  d.location
from
(
  SELECT COUNT(*) AS 'times', userid, name
  FROM main
  WHERE comedate <= DATE_SUB(CURDATE(),
                     INTERVAL 5 DAY)
  GROUP BY userid
  ORDER BY times DESC
  LIMIT 0,2
) x
left join details d
  on x.userid = d.userid