假设需要更改表名“CUSTOMER”为“CUSTOMER_CHANGE”，可以使用（）语句。
A: AALTER TABLE CUSTOMER RENAME CUSTOMER_CHANGE
B: BALTER TABLE CUSTOMER RENAME TO CUSTOMER_CHANGE
C: CRENAME TABLE CUSTOMER TO CUSTOMER_CHANGE
D: DRENAME TABLE CUSTOMER CUSTOMER_CHANGE
A: AALTER TABLE CUSTOMER RENAME CUSTOMER_CHANGE
B: BALTER TABLE CUSTOMER RENAME TO CUSTOMER_CHANGE
C: CRENAME TABLE CUSTOMER TO CUSTOMER_CHANGE
D: DRENAME TABLE CUSTOMER CUSTOMER_CHANGE
举一反三
- 假设需要更改表名“CUSTOMER”为“CUSTOMER_CHANGE”，可以使用（）语句。 A: ALTERTABLECUSTOMERRENAMECUSTOMER_CHANGE B: ALTERTABLECUSTOMERRENAMETOCUSTOMER_CHANGE C: RENAMETABLECUSTOMERTOCUSTOMER_CHANGE D: RENAMETABLECUSTOMERCUSTOMER_CHANGE
- 假设需要删除Customer表中的LogoutTime列，可以使用如下（）方式。 A: AALTER TABLE CUSTOMER DROP column LOGOUTTIME B: BUPDATE TABLE DROP column LOGOUTTIME C: CALTER TABLE CUSTOMER DROP LOGOUTTIME D: DUPDATE TABLE DROP LOGOUTTIME
- 假设需要为表 customer 添加主键约束,主键列为 customer_id，可以使用如下（ ）方式。 A: Alter table CUSTOMER ADD pk_customer primary key (customer_id); B: Altertable CUSTOMER ADD constraint pk_customer primary key (customer_id); C: Alter table CUSTOMER ADD constraint pk_customer (customer_id); D: Alter table CUSTOMER ADD primary key (customer_id);
- How much should the customer get in change?
- 3. Why does the customer occasionally use Flitz product for a change?