<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
Write a SQL query to select the top 5 books with the highest book sales.
Table name: book_sales
Columns: book_name, book_sales<|im_end|>
<|im_start|>assistant
SELECT book_name, book_sales
FROM book_sales 
ORDER BY book_sales DESC
LIMIT 5;<|im_end|>
