[프로그래머스, 144854] 조건에 맞는 도서와 저자 리스트 출력하기 (mysql)

https://school.programmers.co.kr/learn/courses/30/lessons/144854

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SELECT b.book_id, a.author_name, date_format(published_date, '%Y-%m-%d') as published_date
FROM book as b
LEFT JOIN author as a
ON b.author_id = a.author_id
WHERE category = '경제'
ORDER BY published_date