Hello! Can you please provide me with a list of all of customer IDs in the Customer Address History table?
select customer_id from customer_address_history
Thank you for that!  Can you update this list to include the associated customer names, customer address city and the date from and date to for each row?
select t2.customer_name, t3.city, t1.date_from, t1.date_to from customer_address_history as t1 join customers as t2 on t1.customer_id = t2.customer_id join addresses as t3 on t1.address_id = t3.address_id
Great! Can you tell me which, if any, customers on this list appear more than once?
select t2.customer_name from customer_address_history as t1 join customers as t2 on t1.customer_id = t2.customer_id join addresses as t3 on t1.address_id = t3.address_id group by t2.customer_name having count ( * ) > 1