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 Engineer_Visits (contact_staff_id VARCHAR)
TABLE: CREATE TABLE Staff (staff_name VARCHAR, staff_id VARCHAR)

### Question ###
How many engineers did each staff contact? List both the contact staff name and number of engineers contacted.

### Accurate SQL ###

SELECT T1.staff_name, COUNT(*) FROM Staff AS T1 JOIN Engineer_Visits AS T2 ON T1.staff_id = T2.contact_staff_id GROUP BY T1.staff_name