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

Find the total revenue for each manufacturer Plot them as bar chart, and show by the x axis from high to low.
SELECT Name, SUM(Revenue) FROM Manufacturers GROUP BY Name ORDER BY Name DESC
SELECT "Name", SUM("Revenue") FROM "Manufacturers" GROUP BY "Name" ORDER BY "Name" DESC NULLS LAST