下面关于修改视图的SQL语句，那个是正确的（ ）。 A: alter view VIEW01 as select * from users order by age desc B: alter view VIEW02 as select name,avg(score) as avgScore from studentScore C: alter view VIEW03 as select top 10 id,name,password from admin order by id D: alter view VIEW04 as select * from stuent,class where student.classid=class.classid order by class.classid

【单选题】下列是日期型常量的一项是 A. "02/03/2020" B. 02/03/2020 C. {02/03/2020} D. #02/03/2020#

Among the six basic views, which one can show the height of an object? () A: Front view, top<br/>view, left side view B: Top view, bottom<br/>view C: Left side view, bottom view, rear view D: Front view, left<br/>side view, right side view, rear view

【单选题】?{^2020-03-06}+20 A. 03/16/20 B. 03/26/20 C. 06/26/20 D. 20/26/03

？CTOD（’03/14/08’）的值应为（）. A: {03/14/08} B: 03/14/08 C: ″08-03-14″ D: 2008年3月14日

2020/03/10-2020/03/01两个日期相减，得到的结果是

WeregretthatweareunabletoconsideryourrequestforpaymentonD/Aterms.Asarule,weaskforpaymentbyL/C.But,_________________ourfriendlyrelations,wewill,asan A: in view to B: in view with C: in view of D: on view of

表达式{^2017/03/29}-{^2017/03/20}的运算结果类型为

阅读下面程序：n_info = {'01': 'Python', '02': 'Java', '03': 'PHP'}n_info.update({'03': 'C++'})int(lan_info)程序，输出结果是（ ）。 A: {'01': 'Python', '02': 'Java', '03': 'PHP'} B: {'01': 'Python', '02': 'Java', '03': 'C++'} C: {'03': 'C++','01': 'Python', '02': 'Java'} D: {'01': 'Python', '02': 'Java'}

通常使用（ ）语句删除视图 A: DROP VIEW B: DELETE VIEW C: ALTER VIEW D: CREATE VIEW