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用sql語句查詢一張表中重複的資料

SELECT * FROM  TBL_COURSESCORE c  WHERE c.COURSE_ID IN (
SELECT   s.COURSE_ID  FROM  TBL_COURSESCORE s WHERE
s.STUDENT_ID = '2012541024'
GROUP BY
s.COURSE_ID
HAVING
COUNT (1) > 1
)
AND c.STUDENT_ID = '2012541024'