Are there any functions in MySQL like dense_rank() and row_number() like Oracle?

Question

Are there any functions in MySQL like dense_rank() and row_number() like those provided by Oracle and other DBMS?

I want to generate an id

Answer 1

We have now..

select ename, sal, dense_rank() over (order by sal desc)rnk
from emp2 e
order by rnk;