All the payments of an order

Accounting reconciles the payments of a particular order. An order has one or two payments; the table holds a hundred and twenty thousand rows. Give the machine a road to the order's payments.

Speed this query up with an index

SELECT * FROM payments WHERE order_id = 54321

Solution requirement

Just CREATE/ALTER/DROP — no trailing SELECT needed.

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 payments
the query reads at most 8 8 KB pages

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

PostgreSQLv16

Your query result will appear here

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