insert t_type values(0, #{name} ) insert t_student values(0,#{name},#{age},#{sex}) update t_type set name = #{name} where id = #{id} update t_student set name = #{name},age = #{age},sex = #{sex} where id = #{id} delete from t_type where id = #{id} delete from t_student where id = #{id} select * from t_type select name from t_type where name = #{name} select * from t_student