试题与答案

在Oracle中,在执行SQL语句时,你不小心使用Update命令将所有的ID值设置

题型:单项选择题

题目:

在Oracle中,在执行SQL语句时,你不小心使用Update命令将所有的ID值设置成了11111,那么使用()命令可以取消这一操作。

A.EXIT

B.COMMIT

C.ROLLBACK

D.UNDO

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A,B,D解析: 翡翠的品质决定于它的颜色、透明度(水)和缺隙。其成品价格除考虑品质外,还要考虑重量大小和做工。

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