SQL

sql add two values together

SELECT  ID, SUM(VALUE1 + VALUE2)
FROM    tableName
GROUP   BY ID

--or simple addition

SELECT
	ID,
	(VALUE1 + VALUE2) as AddedValues
FROM tableName

sql add multiple values

INSERT INTO table_name (column_list)
VALUES
    (value_list_1),
    (value_list_2),
    ...
    (value_list_n);

Max number of rows is 1000. Inserting rows returned from a SELECT
is done with

INSERT INTO table_name (column_list)
SELECT ... FROM ... (...rest of select statement...);