Sum with two column is SQL Oracle

I have two columns in a SQL table and I need a third column with the sum of the other two.

It’s possible to add a calculated column?

SELECT  WRAP_DURATION, IS_SERV_TYP_FLAG, 
FROM RVM_DM.FACT_INTERACTION_SEGMENT 

Answer

Yes it is possible. I did this in the following query, of course, if the columns are numeric

SELECT Col1,Col2,SUM(Col1 + Col2) AS Column3
FROM yourTable
GROUP BY Col1,Col2

If you want to combine two columns, use the following query

SELECT Col1,Col2,CONCAT(Col1,' ', Col2) AS Column3,
FROM yourTable