INSERT INTO class_group id_, music_group_id_, subject_id_, name_, student_num_, assistant_teacher_id_, main_teacher_id_, create_time_, update_time_, type_, teacher_salary_ VALUES #{id}, #{musicGroupId}, #{subjectId}, #{name}, #{studentNum}, #{assistantTeacherId}, #{mainTeacherId}, #{createTime}, #{updateTime}, #{type}, #{teacherSalary} SELECT * FROM class_group WHERE id_ = #{id} SELECT * FROM class_group ORDER BY id_ UPDATE class_group main_teacher_id_ = #{mainTeacherId}, subject_id_ = #{subjectId}, student_num_ = #{studentNum}, update_time_ = #{updateTime}, assistant_teacher_id_ = #{assistantTeacherId}, teacher_salary_ = #{teacherSalary}, music_group_id_ = #{musicGroupId}, type_ = #{type,typeHandler=com.ym.mec.common.dal.CustomEnumTypeHandler}, name_ = #{name}, WHERE id_ = #{id} DELETE FROM class_group WHERE id_ = #{id} SELECT * FROM class_group ORDER BY id_ SELECT COUNT(*) FROM class_group SELECT c.*, m.* FROM class_group c, music_group m WHERE c.main_teacher_id_ = #{teacherId} OR c.assistant_teacher_id_ = #{teacherId}