(简译:BY 通过自动生成临时变量 FIRST.variable 和 LAST.variable 来识别数据集按照 BY group 中的变量分组后,每组的首行和末行) Use BY In a DATA Step The BY statement applies only to the SET, MERGE, MODIFY, or UPDATE statement that precedes it in the DATA step, and only one BY statement ca...
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程序以DATA语句开头,为SAS数据集,视图或程序提供名字。 DATA <data-set-name-1 <(data-set-options-1)>> <... data-set-name-n <(data-set-options-n)>> </ <DEBUG> <NESTING> <STACK = stack-size>> <NOLIST>; SET<SAS-data-s...
Our fraud solutions, powered by world-leading data and AI capabilities, deliver essential protection for your organization. Leveraging advanced analytics, machine learning and real-time decisioning, SAS provides unmatched defense against evolving threats. Respond faster to new risks, reduce false ...
例如 DATA a; 就是一个DATA Statement。DATA就是一个sas关键字，a就是一个sas名称。又比如 length x...
(2)之后在data语句中对新SAS数据集命名。 (3)再使用merge语句列出要合并的数据集名。使用BY语句说明共同变量。 DATA new-data-set; MERGE data-set-1 data-set-2; BY variable-list; 注意,如果两个数据集有重叠的变量——除了BY变量,那么第二个数据集中的此变量会覆盖第一个数据集中的。
data=work.me;bysex age; run; /*排序后的变量才能使用by,没排序的变量如果放在排序变量前会出现错误,放在后面没事儿,这里是产生first和last观测值的步骤*/ /*意义在于寻找by组内的第一个和最后一个观测值*/ data fst_lst;setme;bysex age ;
2930!409917+3350+474922!2640!379920+3250+481615+4080!7827By using delimiter='!+' on the infile statement, SAS will recognize 34、both of these as valid delimiters.DATA cars;INFILE 'readdel2.txt' DELIMITER='!+' ;INPUT mpg weight price;RUN;PROC PRINT DATA=cars;RUN;As you can see in ...
data example1; group = "太极组\围棋组\古筝组\书法组"; run; example1数据集 分别使用如下3种方法进行宏变量赋值: method1: let statement %let group1 = 太极组\围棋组\古筝组\书法组; %put &group1.; 日志信息 method2:data步call symput statement data _null_; set example1; call symput("...
全程语句global statement不是DATA步和Proc步的部分。 一般情况下,DATA和Proc步的区别 四. 数据步的内置循环 Build-in Loop 数据步DATA step 含有一个底层的结构(一个隐形的内置循环)。 DATA steps execute line by line and observation by observation ...