How to combine two sql queries into one

Question

How can I combine these two SQL statements?

SELECT SUM(hits01 + hits02 + hits03 + hits04 + hits05 + hits06 + hits07 + hits08 + hits09) AS \'AEROwiz\'
FROM tb         


        

Answer 1

You could use two subselects:

SELECT
(
    SELECT SUM(hits01 + hits02 + hits03 + hits04 + hits05 + hits06 + hits07 + hits08 + hits09)
    FROM tbl_2011
    WHERE appName='AEROwiz'
) T1
+
(
    SELECT SUM(hits10 + hits11 + hits12)
    FROM tbl_2010
    WHERE appName='AEROwiz'
) T2
AS AEROwiz

You may also want to consider normalizing your database so that you don't have a table for each year.