Need records where empid having duplaicates

Databases
1

Hi,

10 sunil S/E
20 ravi T/E
30 naga S/E
40 john T/E
10 steven S/E
30 ravi T/E

I need ouput as,

10 sunil S/E
10 steven S/E
30 naga S/E
30 ravi T/E

2 

SELECT
    t1.id
  , t1.name
  , t1.whatever
FROM tablename AS t1
INNER JOIN
  (SELECT id
   FROM tablename
   GROUP BY id
   HAVING COUNT(*) > 1
  ) AS t2
ON t1.id = t2.id