sas datasets過程(重要)

datasets相關選項的運用

proc datasets library =sashelp nolist;
    copy in=sashelp out=work;
    select air class vslib ac ets; *先於copy執行;

quit;

 proc datasets library=work nolist; delete class ets(mt=catalog); *1; 
copy in=work out=workme move memtype=data; *3;
 select air ac(mt=catalog); *2; 
quit;
 proc datasets library=work kill; *刪除所有類型的文件;

quit;

*各種修改格式，索引，標簽，等等;
proc datasets library=workme kill;
proc datasets library=sashelp nolist;
    copy in=sashelp out=workme;
    select class air;
proc datasets library=workme nolist;
    modify class(label='test subjects' read=green); (read對數據集進行加密，后面跟密碼)
    index create idx=(name sex)/nomiss unique; (建立多變量索引);
    format height 6.2; (規定格式);
    label height='test height'; (規定標簽);
    modify air;
    rename date=new_date;
quit;