Can you list the names of all customers who don't have any address information, please?
select customer_name from customers where customer_id not in ( select customer_id from customer_address_history )
Can you find their addresses and add them to the chart?
select customer_name ,customer_address from customers where customer_id not in ( select customer_id from customer_address_history )
Can you list the customer names for all the customers that don't have anything listed under the customer_address column?
select customer_name from customers where customer_id not in ( select customer_id from customer_address_history )