摘要： proc contents data=mysas.ifthen6 position;run;用来查看变量顺序【使用变量缩写】/*OF*/data mysas.ifthen8; infile 'e:\ifthen.txt' dlm='09'x firstobs=2; input date yymmn6. sms_gtone sms_shen sms_dong sms_all; sum=sum(OF sms:);run;proc print data=mysas.ifthen8;run;SAS的变量缩写功能很赞，注意的是在OF 后的变量加:一些特殊变量缩写_ALL_ 阅读全文

摘要： array的好处是可以通过循环来对变量进行操作。do to sas语句中对于循环的控制。data mysas.ifthen7; infile 'e:\ifthen.txt' dlm='09'x firstobs=2; input date yymmn6. gtone shen dong all; array sms(4) gtone shen dong all; do i=1 to 4; if YEAR(date)=2009 then sms(i)=sms(i)*10; end;run;proc print data=mysas.ifthen7;ru... 阅读全文

摘要： data mysas.ifthen5; infile 'e:\ifthen.txt' dlm='09'x firstobs=2; input date gtone shen dong all; retain maxgtone; maxgtone=max(maxgtone,gtone); retain minshen; minshen=min(minshen,shen);run;proc print data=mysas.ifthen5;run;resultObs date gtone shen dong all maxgton... 阅读全文

摘要： 【回顾内容】data mysas.ifthen;infile 'E:\ifthen.txt' dlm='09'x firstobs=2;input date gtone shen dong all;run;1.当数据来源于excel dlm的参数为'09'x in ASCII 09 is the hexadecimal equivalen of a tab character,and the notation '09'x means a hexadecimal 092.firstboservation【if then do end 阅读全文