MySQL选择具有相同列值的行

Question

I need to obtain the rows which having same column value from the following table, I tried it the following way, but it gives me a single row only.

select *
from employee e
group by e.empsalary
having count(e.empsalary) > 1

Table employee

Please suggest me a way.

Answer 1

You should be able to accomplish this by joining the table to itself:

SELECT
    a.*
FROM
    employee a
    JOIN employee b
        ON a.empsalary = b.empsalary
        AND a.empid != b.empid

Answer 2

Use an inner join to join with your query posted.

select A.* from employee A
inner join (
  select empsalary
  from employee 
  group by empsalary
  having count(*) > 1
) B ON A.empsalary = B.empsalary

Answer 3

Something like this perhaps

SELECT * FROM employee a
WHERE EXISTS (
    SELECT 1 FROM employee b
    WHERE a.empsalary = b.empsalary
    AND a.empid <> b.empid
);

Demo - http://sqlfiddle.com/#!2/d75d9/4

Answer 4

select * from employee where empsalary IN(select empsalary from employee  group by empsalary having count(empsalary ) > 1)

Try This.It gives 2 rows as you want.

Demo: http://sqlfiddle.com/#!2/d75d9/6