Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE Accounts (customer_id VARCHAR)

### Question ###
How many accounts does each customer have? List the number and customer id.

### Accurate SQL ###

SELECT COUNT(*), customer_id FROM Accounts GROUP BY customer_id