SELECT rs.course_id, rs.category_id, rs.price, rs.duration, rs.start_time, rs.end_time, rs.cover_url, rs.introduction, rs.create_time, rs.update_time, rs.STATUS, rs.teacher_ids, rs.course_name, sum( rs.section_num ) AS section_num, count( rs.chapter_id ) AS chapter_num, mc.category_name, mc.category_id, sum( rs.total_time ) AS duration FROM ( SELECT c.*, count( cs.section_id ) AS section_num, cs.chapter_id, IFNULL( sum( cs.video_time ), 0 ) AS total_time FROM course c LEFT JOIN course_chapter cc ON c.course_id = cc.course_id LEFT JOIN course_section cs ON cc.chapter_id = cs.chapter_id WHERE 1 = 1 and c.course_id in #{courseId} GROUP BY cs.chapter_id, c.course_id ) rs LEFT JOIN major_category mc ON rs.category_id = mc.category_id GROUP BY course_id LIMIT 1 SELECT e.* FROM exam_arrangement s LEFT JOIN exam_arrangement_time e ON e.arrangement_id = s.id WHERE 1=1 AND s.status != 0 AND s.exam_type_id = #{categoryId} ORDER BY e.start_time LIMIT 1 SELECT rs.course_id, rs.price, rs.start_time, rs.end_time, rs.cover_url, rs.create_time, rs.update_time, rs.STATUS, rs.teacher_ids, rs.course_name, sum( section_num ) AS section_num, count( chapter_id ) AS chapter_num, mc.category_name, mc.category_id, sum( total_time ) AS duration FROM ( SELECT c.*, count( cs.section_id ) AS section_num, cs.chapter_id, IFNULL( sum( cs.video_time ), 0 ) AS total_time FROM course c LEFT JOIN course_chapter cc ON c.course_id = cc.course_id LEFT JOIN course_section cs ON cc.chapter_id = cs.chapter_id WHERE 1 = 1 and c.course_id in #{courseId} GROUP BY cs.chapter_id,c.course_id)rs LEFT JOIN major_category mc on rs.category_id = mc.category_id GROUP BY course_id SELECT * FROM user_plan where 1=1 AND `status` =1 AND user_id = #{userId} and plan_id = #{planId} order by exam_date insert into user_plan_cource ( plan_id, source_id )values (#{planId}, #{courseId}) SELECT * FROM user_plan_cource where 1=1 AND plan_id=#{planId} SELECT COUNT(c.source_id) FROM user_plan_cource c LEFT JOIN user_plan u ON u.plan_id = c.plan_id WHERE 1=1 and u.status=1 and c.source_id in #{courseId} and u.user_id = #{userId} SELECT s.section_id FROM course_section s LEFT JOIN course_chapter r ON s.chapter_id = r.chapter_id LEFT JOIN course c ON c.course_id = r.course_id WHERE 1 = 1 AND c.course_id =#{courseId} ORDER BY r.sort,s.sort ASC