Context: CREATE TABLE orders (customer_id VARCHAR); CREATE TABLE customers (customer_name VARCHAR, customer_id VARCHAR)
Question: For each customer who has at least two orders, find the customer name and number of orders made.
Answer: SELECT T2.customer_name, COUNT(*) FROM orders AS T1 JOIN customers AS T2 ON T1.customer_id = T2.customer_id GROUP BY T2.customer_id HAVING COUNT(*) >= 2