CREATE TABLE company (company_id DECIMAL, name TEXT, headquarters TEXT, industry TEXT, sales_in_billion DECIMAL, profits_in_billion DECIMAL, assets_in_billion DECIMAL, market_value_in_billion DECIMAL)
CREATE TABLE people (people_id DECIMAL, age DECIMAL, name TEXT, nationality TEXT, graduation_college TEXT)
CREATE TABLE employment (company_id DECIMAL, people_id DECIMAL, year_working DECIMAL)

Show the different headquarters and number of companies at each headquarter.
SELECT headquarters, COUNT(*) FROM company GROUP BY headquarters
SELECT "headquarters", COUNT(*) FROM "company" GROUP BY "headquarters"