CREATE TABLE Manufacturers (Code NUMBER, Name VARCHAR2, Headquarter VARCHAR2, Founder VARCHAR2, Revenue FLOAT)
CREATE TABLE Products (Code NUMBER, Name VARCHAR2, Price NUMBER, Manufacturer NUMBER)

Display a bar chart for what is the total revenue of companies started by founder?
SELECT Founder, SUM(Revenue) FROM Manufacturers GROUP BY Founder
SELECT "Founder", SUM("Revenue") FROM "Manufacturers" GROUP BY "Founder"