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AND EXISTS( SELECT 1 FROM (select course_id from teach_course where exam_id = #{examId} and user_id = #{dpr.courseUserId}) tc WHERE tc.course_id = a.course_id)
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AND EXISTS( SELECT 1 FROM (select course_id from teach_course where exam_id = #{examId} and user_id = #{dpr.courseUserId}) tc WHERE tc.course_id = a.course_id)
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