human
Schema:
Staff (staff_id, gender, first_name, last_name, email_address, phone_number)
Customers (customer_id, customer_type_code, address_line_1, address_line_2, town_city, state, email_address, phone_number)
Products (product_id, parent_product_id, product_category_code, date_product_first_available, date_product_discontinued, product_name, product_description, product_price)
Complaints (complaint_id, product_id, customer_id, complaint_outcome_code, complaint_status_code, complaint_type_code, date_complaint_raised, date_complaint_closed, staff_id)
Please answer with SQL.
assistant
Sure, I understand.
human
Find the phone number of all the customers and staff.
assistant
SELECT phone_number FROM customers UNION SELECT phone_number FROM staff
human
Which products has been complained by the customer who has filed least amount of complaints?
assistant
SELECT DISTINCT t1.product_name FROM products AS t1 JOIN complaints AS t2 ON t1.product_id = t2.product_id JOIN customers AS t3 GROUP BY t3.customer_id ORDER BY count(*) LIMIT 1
human
Which city has the least number of customers whose type code is 'Good Credit Rating'?
assistant
SELECT town_city FROM customers WHERE customer_type_code = 'Good Credit Rating' GROUP BY town_city ORDER BY count(*) LIMIT 1
human
How many customers are there?
assistant
SELECT count(*) FROM customers
human
How many customers are there in the customer type with the most customers?
assistant
SELECT count(*) FROM customers GROUP BY customer_type_code ORDER BY count(*) DESC LIMIT 1
human
Which state has the most customers?
assistant
SELECT state FROM customers GROUP BY state ORDER BY COUNT( * ) LIMIT 1 ;