## 参数返回值 参数可以是任意返回值，取决于于sql查询结果,不仅仅返回的pojo是Mapper定义的泛型，也可以是任意POJO. ```java @Sql("select * from sys_user where id = ?") UserEntity queryUserById(Integer id); @Sql("select * from sys_user where department_id = ?") List<UserEntity> queryUserById(Integer id); @Sql("select count(1) from sys_user) int getCount(); @Template("update user set status=#{status} where id=#{id}") @Update int update( User user); @Sql("select * from sys_deptmartment where id = ?") DepartmentEntity queryDeptById(Inrteger id); ```