SELECT clause with self joining table

Question

Two tables:

//SKILL
SNAME
---------------------
C++
C#
C
JAVA

//REQUIRED
SNAME          REQUIRED
------------------------
C++               C
C#                     


        

Answer 1

Not the best solution but you can try like this:

select * from srequired
where sname='C++'
UNION
select * from srequired
where sname in (select required from srequired where sname='C++')