%macro check_empty_var(libname=WORK, memname=); ***Dataset exists; %if %sysfunc(exist(&libname..&memname.)) = 1 %then %do; ***Get the number of vairiables; data _null_; set sashelp.vtable; where libname = upcase("&libname.") and memname = upcase("&memname."); call sympu...
So, every time I run through a dataset, I need to see if variables a or b exist, if a exists then mulitiply by 2 and if b exists compress it. 0 Likes RW9 Diamond | Level 26 Re: How to check if a list of columns exists in a dataset and do formatting ...
SAS数据集操作：基础概念与实践说明书
%macro getMaxVal(indata, invar); /* returns maxium value of a variable from a dataset*/ %if %symexist(_max_) %then %let _max_ =; %global _max_; proc sql noprint; select max(&invar) into: _max_ from &indata; quit; %mend getMaxval; data class; length sexl $10 sexn 8; ...
In such an example the dataset would be sorted so that all observations with the smallest value of the first listed variable would come first and then observations would be ordered by the value of second listed variable. When the BY statement includes a character value the observations are ...
contentv.sas csv2ds.sas csv_vnext.sas csvfile.sas curdir.sas dbcon.sas dblibchk.sas direxist.sas dirtree.sas dquote.sas ds2post.sas dslist.sas fileref.sas fread.sas github_include.sas lowcase.sas macdelete.sas maclist.sas mvartest.sas ...
To do this, we replace the following line of code: %let data=SASHELP.CARS; We replace that single line of code with the following three lines of code: %let libref=SASHELP; %let dataset=CARS; %let data=&libref.&dataset; Without rerunning the program (we are very confident in our ...
.variable. Every dataset should be in the sort order; if not, we can use the PROC SORT procedure to sort the datas mainly by using the ID as the unique identifier. And the first and last set of variables are temporary and cannot be used in the newly created dataset; if the dataset ...
ELSE TREATMENT_CATEGORY = "SLOW TREATMENT"; * NEW AGE VARIABLE; IF AGE >= 60 THEN AGE_60 = 1; ELSE AGE_60 = 0; * NEW CHARLSON VARIABLE; IF CHARLSON > 4 THEN CHARLSON_4 = 1; ELSE CHARLSON_4 = 0; * NEW PITT VARIABLE; IF PITT > 3 THEN PITT_3 = 1; ELSE PITT_3 = 0; ...
9h11bo初始化哈希表:declare hash (argument_tag-1 : value-1<, .argument_tag-n: value-n>); mpxBB或者:_newhash(argume nt_tag-1: value-1<, .argume nt_tag-n:variable_ namevalue-n>); Djj 3、9d o例如:declare hash h(hashexp: 4,dataset:'work.sales', ordered: 'yes');定义了一个...