Reference solution
The shape we check against. Compare it with your query: the set of rows matters, the formatting does not.
SELECT category, MAX(price) AS max_price FROM products GROUP BY category ORDER BY max_price DESC;
For each product category return the category and the highest price in it, aliased as max_price. Sort by max_price descending.
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
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