第二个题目: if you need 20% of character observations, data is compressed,what method can minimize computer resource usage? 就是if-then/else和where的efficiency比较,应该选where
第三个题目:给了两个表然后一段程序code,问选择哪个,答案应该是有Thomas,Jones,Smith而没有Adam的,但是有两个选项都有这两个,注意code里面有一个Desc option,所以Sales需要降序排列
其他的就都在鸡精和我的笔记题库里了,祝大家顺利,其他的论坛上都有我就不上传了,比较穷收一点论坛币希望理解~~
下面是我看过链接很有用推荐:
http://crackman.net/?p=416
https://s.pinggu.org/search.php?mod=forum&searchid=685&orderby=lastpost&ascdesc=desc&searchsubmit=yes&kw=2015+SAS+ADV
http://www.mitbbs.com/article_t/Statistics/31382169.html
https://bbs.pinggu.org/thread-3518763-1-1.html
http://sas.1or9.com/archives/category/sas-adv-questions/
http://sas.1or9.com/page/8/
https://bbs.pinggu.org/thread-3114853-1-1.html
https://bbs.pinggu.org/thread-3779234-1-1.html
笔记里面表的页数是certification PREP这本书上面的,说我不能上传论坛上已经有了