MySQL: Get total in last row of MySql result

Question

For example I have a table like this:

product | quantity | something
-------------------------------
 abc    |   5      |  2
 xzy    |   5      |  2
 asd             


        

Answer 1

(SELECT product, 
        quantity, 
        something 
 FROM   tablename) 
UNION 
(SELECT "all"          AS product, 
        SUM(quantity)  AS quantity, 
        SUM(something) AS something 
 FROM   tablename) 

This is working query. It will add a fourth row as desired at the end of your result