Incorrect usage of UNION and ORDER BY?

Question

how can i use union and order by in mysql ?

select * from _member_facebook 
inner join _member_pts 
ON _member_facebook._fb         


        

Answer 1

I think use of parenthesis is mandatory if you use order by or limit or both. I tried working on a query by using limit and order by interchangeably without parenthesis and the query did not work. It only worked after adding parenthesis.