sql oracle sum group

Question

The SQL I coded gives me the following output:

column1  column2    column3

50       RedCar     8
50       RedCar     8
50       RedCar     8
40       BlueCar    8
20       YellowCar  8
80       WhiteCar   8
50       RedCar     8

The final result I am looking for is:

column1  column2      column3

50       RedCar       32
40       BlueCar      8
20       YellowCar    8
80       Whitecar     8 

What should happen in text:

My SQL finds all rows with the same ID in column1 and makes one row from it summing up the numbers in column3 .

Answer 1

Try to use group by clause with sum function as below

select column1,column2,sum(column3) as column3
from tab
group by column1,column2