-- Database schema
| buildings : id [ INT ] primary_key , name [ TEXT ] , City [ TEXT ] , Height [ INT ] , Stories [ INT ] , Status [ TEXT ] | Companies : id [ INT ] primary_key , name [ TEXT ] , Headquarters [ TEXT ] , Industry [ TEXT ] , Sales_billion [ INT ] , Profits_billion [ INT ] , Assets_billion [ INT ] , Market_Value_billion [ TEXT ] | Office_locations : building_id [ INT ] primary_key Office_locations.building_id = buildings.id , company_id [ INT ] Office_locations.company_id = Companies.id , move_in_year [ INT ] |
-- -- Please show the industries of companies in descending order of the number of companies.

SELECT Industry FROM Companies GROUP BY Industry ORDER BY COUNT(*) DESC;