对表中数据的操作#插入一条中的部分信息 insert into class_info_use (id, class_name_use) values (1,'西楼140'); #插入一条完整的信息 insert into class_info_use values (3,'西楼127'); insert into class_info_use values (6,'西楼127'),(4,'东边21'); #修改信息 update class_info_use set class_name_use='西楼111' where class_name_use='西楼127'; #删除信息 delete from class_info_use where id=6;