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)
CREATE TABLE station_company (Station_ID INT, Company_ID INT, Rank_of_the_Year INT)

Show the number of companies in each headquarter with a bar chart, show y-axis from low to high order please.
SELECT Headquarters, COUNT(Headquarters) FROM company GROUP BY Headquarters ORDER BY COUNT(Headquarters)
SELECT "Headquarters", COUNT("Headquarters") FROM "company" GROUP BY "Headquarters" ORDER BY COUNT("Headquarters") NULLS FIRST