DB2, SQL query to SUM 2 columns -


i need add columns in row. table data

id    col1     col2 1     10        20 2     11        20 3     12        20

result expected

id    sum  1     30   2     31   3     32

i tried sum(col1 + col2), gives sum of columns together.

sum() aggregating function (one give single result group of rows), not algebraic one: want addition (the mathematical sum) of 2 columns:

select id, col1 + col2 sum mytable

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