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

Bar graph to show sum revenue from different name, and rank bars in asc order.
SELECT Name, SUM(Revenue) FROM Manufacturers GROUP BY Name ORDER BY Name
SELECT "Name", SUM("Revenue") FROM "Manufacturers" GROUP BY "Name" ORDER BY "Name" NULLS FIRST