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Leetcode 3570. Find Books with No Available Copies

Identify books for which the number of currently borrowed copies (COUNT of borrowing_records with NULL return_date) equals total_copies, meaning zero copies are available. Return those books ordered by current borrower count descending and then by title ascending (requires grouping/aggregation and HAVING to filter).

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Leetcode 3570. Find Books with No Available Copies | Hello Interview