SELECT main_industry ,  count(*) FROM company GROUP BY main_industry ORDER BY sum(market_value) DESC LIMIT 1
For each main industry, what is the total number of companies for the industry with the highest total market value?
SELECT main_industry , count ( * ) FROM company GROUP BY main_industry ORDER BY sum ( market_value ) DESC LIMIT 1
select main_industry , count ( * ) from company group by main_industry order by sum ( market_value ) desc limit value
For each main industry , what is the total number of companies for the industry with the highest total market value ?