CREATE TABLE customer_orders (order_id DECIMAL, customer_id DECIMAL, order_status TEXT, order_date TIME, order_details TEXT)
CREATE TABLE customers (customer_id DECIMAL, payment_method TEXT, customer_name TEXT, date_became_customer TIME, other_customer_details TEXT)
CREATE TABLE order_items (order_id DECIMAL, product_id DECIMAL, order_quantity TEXT)
CREATE TABLE products (product_id DECIMAL, product_details TEXT)
CREATE TABLE addresses (address_id DECIMAL, address_content TEXT, city TEXT, zip_postcode TEXT, state_province_county TEXT, country TEXT, other_address_details TEXT)
CREATE TABLE customer_addresses (customer_id DECIMAL, address_id DECIMAL, date_address_from TIME, address_type TEXT, date_address_to TIME)
CREATE TABLE customer_contact_channels (customer_id DECIMAL, channel_code TEXT, active_from_date TIME, active_to_date TIME, contact_number TEXT)

Find the list of cities that no customer is living in.
SELECT city FROM addresses WHERE NOT city IN (SELECT DISTINCT t3.city FROM customers AS t1 JOIN customer_addresses AS t2 ON t1.customer_id = t2.customer_id JOIN addresses AS t3 ON t2.address_id = t3.address_id)
WITH "_u_0" AS (SELECT DISTINCT "t3"."city" FROM "customers" AS "t1" JOIN "customer_addresses" AS "t2" ON "t1"."customer_id" = "t2"."customer_id" JOIN "addresses" AS "t3" ON "t2"."address_id" = "t3"."address_id" GROUP BY "city") SELECT "city" FROM "addresses" LEFT JOIN "_u_0" AS "_u_0" ON "_u_0"."" = "city" WHERE "_u_0"."" IS NULL