Question

I have the following Table elements how do i run a query that reproduce the table but hav an extra row at the bottom showing the sum of col2

Col1  | col2  
---------------
Water |  22  
water |   3      
water |   5      
Air   |  10      
Earth |   3       
Air   |   5    

Answer 1

I don’t know why you want that but give this a try:

SELECT Col1, Col2 FROM tableName
UNION
SELECT 'SUM' as Col1, SUM(Col2) Col2 FROM tableName