CREATE TABLE Products (Code INT, Name VARCHAR, Price DECIMAL, Manufacturer INT)
CREATE TABLE Manufacturers (Code INT, Name VARCHAR, Headquarter VARCHAR, Founder VARCHAR, Revenue FLOAT)

What is the total revenue of companies started by founder. Plot them as bar chart.
SELECT Founder, SUM(Revenue) FROM Manufacturers GROUP BY Founder
SELECT "Founder", SUM("Revenue") FROM "Manufacturers" GROUP BY "Founder"