Answer / abc

Select salary from (select salary from employees order by
salary desc) where rownum <=2;

Answer / rajkumar

select top 1 colmn from table_name where colmn in
(select top 2 colmn from table_name where colmn is not
null order by colmn desc)

Answer / arun

select salary from(select salary from(select distinct salary from employees order by salary desc) where rownum<=2 order by salary) where rownum=1;

Answer / srinivas

select * from emp m
where
(select count(distinct sal)+1 from emp s
where s.sal>m.sal)<=2
order by sal desc

Answer / mamta

Select sal
from salary_tbl
where rownum <= 2
order by sal desc;

Answer / anusreekr

An error is occuring saying "unknown column rownum".
Please let me know where rownum feature is available in all
the mysql versions.The server version i am using is 5.5.21.

Thanks

Answer / unknown

Select salary from (select salary from employees) where
rownum <=2;

how to check the 3rd max salary from an employee table? One of the queries used is as follows: select sal from emp a where 3=(select count(distinct(sal)) from emp b where a.sal<=b.sal). Here in the sub query "select count(distinct(sal)) from emp b where a.sal<=b.sal" or "select count(distinct(sal)) from emp b where a.sal=b.sal" should reveal the same number of rows is in't it? Can any one here please explain me how is this query working perfectly. However, there is another query to get the 3rd highest of salaries of employees that logic I can understand. Pls find the query below. "select min(salary) from emp where salary in(select distinct top 3 salary from emp order by salary desc)" Please explain me how "select sal from emp a where 3=(select count(distinct(sal)) from emp b where a.sal<=b.sal)" works source:http://www.allinterview.com/showanswers/33264.html. Thanks in advance Regards, Karthik.

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