How can i add 2 column data to create a third column in an SQL query ?
e.g. in a table, I have 2 columns A and B. Now I want to add values of columns A and B to create third column C in an SQL query. e.g. in the first row of the table, values in column A and B are 10 and 20, so the SQL query output should give value 30 in first row and in column C.