题目内容

只修改列的数据类型的指令是_____。

A. alter table... alter column
B. alter table... modify column...
C. alter table... update...
D. alter table... update column...

查看答案

搜索结果不匹配？点我反馈

更多问题

A. alter table... delete...
B. alter table...delete column...
C. alter tabe..drop...
D. alter table...drop column...

A. not null
B. no null
C. not blank
D. no blank

A. order by
B. having
C. top
D. distinct

A. limit
B. group by
C. where
D. order by