peilin.li

1、删除主键有重复的行 nodupkey只要BY主键的值相等，不管其他值是否相等，一律删除data test3;input id1 $ id2 $ extra ;cards;aa ab 3aa ab 3aa ab 2aa ab 1;p...

1. Use a library to read SAS filelibname libref base "path";proc contents data=libref.table_name;run;libname libref clear;1. Use a library to read EXCEL fileoptions validvarname=V7;libname ...