Inflearn コミュニティ Q&A
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SELECT DIRECTOR, TITLE, MARK1, MARK2, AVG(MARK1) '감독별 관객평점 평균' FROM DBO.TBL_MOVIE M1 WHERE RELEASE BETWEEN 2010 AND 2019 GROUP BY DIRECTOR HAVING MARK2 > (SELECT AVG(MARK1) FROM DBO.TBL_MOVIE M2 WHERE M2.DIRECTOR = M1.DIRECTOR);
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DBMS/RDBMSsqlMSSQL
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