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SELECT aum.user_id_,su.avatar_,sj.id_ subject_id_,su.username_,su.phone_,sj.name_ subject_name_,SUM(aum.sub_course_num_) sub_course_num_
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SELECT aum.user_id_,su.avatar_,sj.id_ subject_id_,su.username_,su.phone_,sj.name_ subject_name_,SUM(aum.sub_course_num_) sub_course_num_
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+ FROM (SELECT aum.id_,aum.user_id_,aum.sub_course_num_,aum.single_course_time_,aum.teacher_id_ from activity_user_mapper aum
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