#999

Precise Customer Lookup

A service searches for orders belonging to user_id = 42. Add an index on orders.user_id so this precise lookup does not scan the whole orders table.

Speed this query up with an index
SELECT * FROM orders WHERE user_id = 42

CREATE/ALTER/DROP biss — l-ebda SELECT fl-aħħar mhu meħtieġ.

Ir-riżultat tal-query tiegħek jidher hawn