Number of Cities per Customers
Paulo R. Rodegheri 
Brasil
Paulo R. Rodegheri Brasil
The company board asked you for a simple report on how many cities the company has already reached.
To do this you must display the number of distinct cities in the customers table.
| Column | Type |
| id (PK) | numeric |
| name | character varying (255) |
| street | character varying (255) |
| city | character varying (255) |
| state | char (2) |
| credit_limit | numeric |
| id | name | street | city | state | credit_limit |
| 1 | Nicolas Diogo Cardoso | Acesso Um | Porto Alegre | RS | 475 |
| 2 | Cecília Olivia Rodrigues | Rua Sizuka Usuy | Cianorte | PR | 3170 |
| 3 | Augusto Fernando Carlos Eduardo Cardoso | Rua Baldomiro Koerich | Palhoça | SC | 1067 |
| 4 | Nicolas Diogo Cardoso | Acesso Um | Porto Alegre | RS | 475 |
| 5 | Sabrina Heloisa Gabriela Barros | Rua Engenheiro Tito Marques Fernandes | Porto Alegre | RS | 4312 |
| 6 | Joaquim Diego Lorenzo Araújo | Rua Vitorino | Novo Hamburgo | RS | 2314 |
| count |
| 4 |