How many customers have an address in Abu Dhabi city? List those customer names.
name refers to first_name, last_name
SELECT COUNT(T1.city_id) FROM city AS T1 INNER JOIN address AS T2 ON T1.city_id = T2.city_id INNER JOIN customer AS T3 ON T2.address_id = T3.address_id WHERE T1.city = 'Abu Dhabi'