This technical problem involves finding all customers who have ordered a product that is out of stock. The input is three tables: customers, orders, and products. The output is the customers table with the id and name of the customers who have ordered a product that is out of stock.
The candidate's solution is incomplete - it does not return the expected output. The candidate has correctly identified that a join is needed to combine the data from the three tables, but has not included all the necessary conditions in the WHERE clause. A better approach would be to use a LEFT JOIN and check for NULL values in the products table, as this would return all customers who have placed an order for a product that is out of stock.
Evaluated at: 2022-12-01 00:05:54