Count the number of employees for each city.
SELECT count(*) ,  city FROM employee GROUP BY city
SELECT count(*) ,  city FROM employee GROUP BY city
[{'count(*)': 3, 'City': 'Bath'}, {'count(*)': 3, 'City': 'Bristol'}, {'count(*)': 1, 'City': 'Leicester'}, {'count(*)': 1, 'City': 'Sale'}, {'count(*)': 2, 'City': 'Wasps'}]