id , question_type, subject_id, score, grade_level, difficult, correct, content, create_user, status, create_time, deleted SELECT tq.*, CASE WHEN tq.question_type = 1 THEN '单选题' WHEN tq.question_type = 2 THEN '多选题' WHEN tq.question_type = 3 THEN '判断题' WHEN tq.question_type = 4 THEN '填空题' WHEN tq.question_type = 5 THEN '简答题' END AS questionTypeName, ts.name AS subjectName, tu.real_name AS createUserName FROM t_question tq LEFT JOIN t_subject ts ON tq.subject_id = ts.id LEFT JOIN t_user tu ON tq.create_user = tu.id and tq.deleted=0 and tq.id= #{id} and tq.grade_level= #{level} and tq.subject_id= #{subjectId} and tq.question_type= #{questionType} and instr(tq.content, #{content}) SELECT FROM t_question where id in #{id} SELECT count(*) from t_question where deleted = 0 SELECT create_time as name, COUNT(create_time) as value from ( SELECT DATE_FORMAT(create_time, '%Y-%m-%d') as create_time from t_question WHERE deleted=0 and create_time between #{startTime} and #{endTime} ) a GROUP BY create_time