Multiple row subquery with like operator

Question

can any1 give me an example where we can use a multiple row subquery with the like operator.I read it can be used but when i tried it gives the following error
select * from gagan_emp where ename like (select ename from gagan_emp where deptno=10)
ERROR at line 1:
ORA-01427: single-row subquery returns more than one row

Answer 1

The right part of 'LIKE' is permitted only single value expression
(including subquery that returns single value),
is not permitted multiple values.
-- Examples (but.... not so good)
select * from gagan_emp e0
where exists
(select ename from gagan_emp e1 where deptno=10
and e0.ename like e1.ename)
select * from gagan_emp e0
where exists
(select ename from gagan_emp e1 where deptno=10
and e0.ename = e1.ename)
select * from gagan_emp e0
where ename = any
(select ename from gagan_emp e1 where deptno=10)
select * from gagan_emp
where ename like
(select ename from gagan_emp e1 where deptno=10 and rownum=1)
;