Context: CREATE TABLE orders (customer_id VARCHAR, order_status VARCHAR); CREATE TABLE customers (customer_name VARCHAR, customer_id VARCHAR)
Question: Find the names of the customers who have order status both "On Road" and "Shipped".
Answer: SELECT T1.customer_name FROM customers AS T1 JOIN orders AS T2 ON T1.customer_id = T2.customer_id WHERE T2.order_status = "On Road" INTERSECT SELECT T1.customer_name FROM customers AS T1 JOIN orders AS T2 ON T1.customer_id = T2.customer_id WHERE T2.order_status = "Shipped"