One customer's orders through the link

The report shows the orders of a customer found by name. There is one customer with a dozen orders — and both tables are read whole. The join itself is not the problem — the problem is that there is no road to the customer's orders. Build it; an index on users.name is not needed in this task.

Speed this query up with an index

SELECT o.id, o.status, o.created_at
FROM orders o
JOIN users u ON u.id = o.user_id
WHERE u.name = 'Anna 100'

Requisito da solução

Apenas CREATE/ALTER/DROP — não é preciso um SELECT no final.

What counts as solved

You may only change the schema: indexes and ANALYZE. The query stays as the task wrote it — no need to send it back.

the plan has no Seq Scan on orders
the query reads at most 333 8 KB pages

Grading runs on a larger dataset than the samples show — the answer has to hold at scale.

PostgreSQLv16

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