select * from t_course select * from t_course where id = #{id} select * from t_course and name like #{name} limit #{start},#{size} select count(*) from t_course and name like #{name} insert into t_course (name, minutes) values (#{name}, #{minutes}); update t_course name=#{name}, minutes=#{minutes}, where id = #{id} delete from t_course where id=#{id}