Renaming SAS® Variables Imelda C. Go, South Carolina Department of Education, Columbia, SC ABSTRACT This paper discusses a number of ways to rename variables. Its topics include the RENAME statement used in DATA steps, the RENAME= data set option, the AS keyword for PROC SQL, using macros...
%macro dsloop;proc sql noprint;selectcount(*)into:_loop from dictionary.tables where libname=upcase('sashelp');select memname into:dsn1-:dsn%left(&_loop.)from dictionary.tables where libname=upcase('sashelp');quit;%doi=1%to&_loop.;%putNOTE:&&dsn&i.&i.;%end;%mend;%dsloop; 这段...
(data-set-options): specifies actions SAS is to take when it reads variables orobservations into the program data vectorfor processing. DROP= KEEP= RENAME= (execution sequence: drop>keep>rename) FIRSTOBS=(first obs to be read) OBS=(last obs to be read) IN= WHERE= Options END: creates a...
问重命名一个SAS库中多个数据集中的多个变量ENLinux带有一个非常强大的内置工具，称为rename.这rename命...
data have ; call missing(_2001_count,_2002_count) ; run ; proc sql noprint; select cats(name,'=',cats("count",substr(name,1,5))) into :renames separated by " " from dictionary.columns where libname="WORK" and memname="HAVE" and name eqt "_20" ; quit; %put...
*_1. pre-processing; *_1.1 macro variables; *subjid number; proc sql noprint; select count(distinct &grpvarn.) , count(distinct &usubjid.) into: grpnum, : SUBN999 from &adsl.; quit; %put 受试者数量:&SUBN999. 分组数量:&grpnum.; %do xx = 1 %to &grpnum.; proc sql noprin...
proc contents examine the attributes of variables reading sas data set SET statement set<sas-data-set<data-set-options>><options>; sas-data-set:specifies namedata-set-optionskeepspecifies variables for processingdrop excludes variablesrename changes the name of a variablewhere selects observations tha...
因此,用空格分隔的old=new对列表对于重命名非常有用。 proc sql noprint; select catx('=',name,newname) into :renames from fixed_names where newname n 是否有可能根据变量的值改变部分变量? 您可以在循环中添加此检查,如果学生匹配一个点,后跟任意数量的数字(\.(\d+)),则替换为相同的数字,但改为...
/*在我机器上modify比update普遍快0.3秒,这里有三十几万行的数据*/procsql;updatetestsetx=x+1000; quit; data test; modify test; x=x-1000; run; 2.2:利用transaction data更行master data 更新by组中与master对应的观测行的数据,运行时程序内部会自动生成一个dynamic where查询语句 ...
CV2VIEW:将SAS/ACCESS view 转为 PROC SQL views。 DATASETS:列表, 复制,更名,删除 SAS file 和 SAS generation groups。管理index,在SAS library中追加SAS data sets。 DBCSTAB:生成SAS支持的双字节 转换表。 DISPLAY:执行SAS/AF 程序。 DOCUMENT:操作输出,以ODS格式。 PROC DOCUMENT程序允许用户浏览,编辑output...