订单表Orders的列OrderID的类型是小整型(smallint),根据业务的发展需要改为整型(int),应该使用下面的哪条语句?( ) A: ALTER COLUMN OrderID int FROM Orders B: ALTER TABLE Orders ( OrderID int ) C: ALTER TABLE Orders ALTER COLUMN OrderID int D: ALTER COLUMN Orders.OrderID int
订单表Orders的列OrderID的类型是小整型(smallint),根据业务的发展需要改为整型(int),应该使用下面的哪条语句?( ) A: ALTER COLUMN OrderID int FROM Orders B: ALTER TABLE Orders ( OrderID int ) C: ALTER TABLE Orders ALTER COLUMN OrderID int D: ALTER COLUMN Orders.OrderID int
以下语句错误的是( ) A: alter table emp delete column addcolumn; B: alter table emp modify column addcolumn char(10); C: alter table emp change addcolumn addcolumn int; D: alter table emp add column addcolumn int;
以下语句错误的是( ) A: alter table emp delete column addcolumn; B: alter table emp modify column addcolumn char(10); C: alter table emp change addcolumn addcolumn int; D: alter table emp add column addcolumn int;
SQL语句:ALTER TABLE STUDENT1 ______ COLUMN XH INT,功能是将表STUDENT1的COLUMN列变成INT型的,应填入______ A: CREATE B: ALTER C: INSERT D: DELETE
SQL语句:ALTER TABLE STUDENT1 ______ COLUMN XH INT,功能是将表STUDENT1的COLUMN列变成INT型的,应填入______ A: CREATE B: ALTER C: INSERT D: DELETE
Writing practice 2 (Match) Match the English terms and expressions in Column A with their Chinese equivalents in Column B.
Writing practice 2 (Match) Match the English terms and expressions in Column A with their Chinese equivalents in Column B.
第2单元练习(副本) Match the English words in Column A with the Chinese meaning in Column B.
第2单元练习(副本) Match the English words in Column A with the Chinese meaning in Column B.
以下函数计算结果正确的是() A: ow(a3)=2 B: ow(a4)=2 C: column(a4)=1 D: column(d4)=4
以下函数计算结果正确的是() A: ow(a3)=2 B: ow(a4)=2 C: column(a4)=1 D: column(d4)=4
JTextField的构造方法中,方法JTextField(String text,int column)的作用是()
JTextField的构造方法中,方法JTextField(String text,int column)的作用是()
以下可以用来修改表结构的命令是()。 A: alter table student add sphone int B: alter table student add unique(sfzh) C: alter table student drop column saddress D: alter table student alter column sage int
以下可以用来修改表结构的命令是()。 A: alter table student add sphone int B: alter table student add unique(sfzh) C: alter table student drop column saddress D: alter table student alter column sage int
以下可以用来修改表结构的命令是()。 A: alter table student add sphone int(11) B: alter table student unique(sfzh) C: alter table drop column saddress D: alter table student change age sage int(2)
以下可以用来修改表结构的命令是()。 A: alter table student add sphone int(11) B: alter table student unique(sfzh) C: alter table drop column saddress D: alter table student change age sage int(2)
A column that fails due to normal stress, is called ( ) A: short column B: long column C: weak column D: medium column
A column that fails due to normal stress, is called ( ) A: short column B: long column C: weak column D: medium column