更新student数据表中address列的数据类型中字节长度为varchar(50)
更新student数据表中address列的数据类型中字节长度为varchar(50)
A.alter table student drop column address
B.alter table student alter address varchar(50)
C.drop column address from student
D.delete address from student
正确答案:alter table student alter address varchar(50)
Tag:SqlServer数据库原理与应用 字节 数据类型
时间:2023-12-26 10:57:35