1.gm_answer_question 表
2.统计表中的type=0对应的type=1的记录数?
SELECT B.main_id, B.dt, COUNT(A.TYPE) FROM (SELECT aq.main_id, t.subject_code, class.level_code, DATE_FORMAT(aq.create_time, '%Y-%m-%d') dt FROM gm_answer_question aq, gm_teacher t, gm_class class, gm_school school WHERE aq.TYPE = 0 AND aq.school_id = t.school_id AND aq.receiver_id = t.user_id AND aq.class_id = class.id AND aq.delete_flag = 0 AND t.delete_flag = 0 AND class.delete_flag = 0 AND school.delete_flag = 0 AND school.id = aq.school_id AND school.name LIKE CONCAT('%', '101', '%') AND aq.create_time > STR_TO_DATE('2015-03-29', '%Y-%m-%d') AND aq.create_time < STR_TO_DATE('2015-04-07', '%Y-%m-%d') GROUP BY main_id) B LEFT JOIN gm_answer_question A ON B.main_id = A.main_id AND A.TYPE = 1 AND A.delete_flag = 0 GROUP BY B.main_id ?