Reference solution
The shape we check against. Compare it with your query: the set of rows matters, the formatting does not.
SELECT id, name FROM customers WHERE country = 'UK' ORDER BY name;
Return the id and name of every customer from the UK, sorted by name (A-Z).
hint ladder
query.sql
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step inspector
Write a query with WITH … AS (…) blocks, then inspect each intermediate table before the final SELECT.
output
Run your code to see its output, or check your solution to grade it.
Code is blurred until you solve this problem — the reasoning stays readable.