CREATE TABLE station_company (Station_ID INT, Company_ID INT, Rank_of_the_Year INT)
CREATE TABLE company (Company_ID INT, Rank INT, Company TEXT, Headquarters TEXT, Main_Industry TEXT, Sales_billion FLOAT, Profits_billion FLOAT, Assets_billion FLOAT, Market_Value FLOAT)
CREATE TABLE gas_station (Station_ID INT, Open_Year INT, Location TEXT, Manager_Name TEXT, Vice_Manager_Name TEXT, Representative_Name TEXT)

Show the number of companies in each headquarter with a bar chart, and order by the the number of headquarters in desc.
SELECT Headquarters, COUNT(Headquarters) FROM company GROUP BY Headquarters ORDER BY COUNT(Headquarters) DESC
SELECT "Headquarters", COUNT("Headquarters") FROM "company" GROUP BY "Headquarters" ORDER BY COUNT("Headquarters") DESC NULLS LAST