标题: 请教几个SAS题目 [打印本页] 作者: shiyiming 时间: 2010-7-26 16:16 标题: 请教几个SAS题目 The SAS data set WORK.TEMP is indexed
on the variable Id:
Id Amount
-- ------
P 52
P 45
A 13
A 56
R 34
R 12
R 78
The following SAS program is submitted:
proc print data=WORK.TEMP;
[_insert_BY_statement_]
run;
Which BY statement completes the program,
creates a listing report that is grouped
by Id, and completes without errors?
A.
by Id;
B.
by Id grouped;
C.
by Id descending;
D.
by descending Id;
在SAS中建立该数据集，运行一下，发现没有一个不报错的！ 这是为何？ 正确答案应该是那个？ 谢谢！作者: shiyiming 时间: 2010-7-26 16:53 标题: Re: 请教几个SAS题目 没报错呀
[code:2tml8xzz]data temp(index=(id));
input Id $ Amount;
datalines;
P 52
P 45
A 13
A 56
R 34
R 12
R 78
;
proc print data=work.temp;
by id;
run; [/code:2tml8xzz]作者: shiyiming 时间: 2010-7-26 17:00 标题: Re: 请教几个SAS题目 晕 忘了建立索引了 谢谢！作者: shiyiming 时间: 2012-7-11 11:13 标题: Re: 请教几个SAS题目 data temp(index=(id));
index原来是这么个用法，id两边也要叫括号！！！