How to declare a variable in MySQL?

Question

How to declare a variable in mysql, so that my second query can use it?

I would like to write something like:

SET start = 1;
SET finish = 10;

SELECT         


        

Answer 1

SET Value

 declare Regione int;   
 set Regione=(select  id from users
 where id=1) ;
 select Regione ;