它与Data Step中的Variables(包括来自Data Set和Data Step中新创建的)是完全不同的,而且与Data Set是没有任何关系的。因此为了将二者区别开来,在使用Macro Variables时要在前面加一个“&”,代表其后面的是一个Macro Variable,而不是Data Step中的Variables。 Macro Variables从构成上来讲包括两部分:SAS系统提供的,...
When you use the SYMPUT routine to create a macro variable in a DATA step, the macro variable isnot actually created and assigned a valueuntilthe DATA step isexecuted. options symbolgen pagesize=30;%let crsnum=3; data revenue;setsasuser.allend=final;wherecourse_number=&crsnum; total+1;if...
NOTE: DATA statement used (Total process time): real time 0.01 seconds cpu time 0.01 seconds 403 404 options symbolgen ; 405 406 data test ; SYMBOLGEN: Macro variable YYMMP resolves to 2202 407 set eop_&yymmp._drv_rskp ; ERROR: File WORK.EOP_2202.DATA does not exist. ERRO...
The SAS® Data step/Macro InterfaceThe SAS(R) macro facility is an extremely useful part of the SAS(R) System. However, macro variables and the macros themselves do not have to be exclusively referenced from within the macro facility. The SAS(R) data step can create, resolve and execute...
为了便于讨论，假设您更改了宏变量的名称M更可笑的表达，例如YN_OPTION_SELECT_M_STATES```%let YN_...
4 FIRST.variable和LAST.variable Automatic variables are system variables that SAS creates automatically when a session is started. SAS creates both automatic macro variables and automatic DATA step variables. The names of automatic variables are reserved for the system-generated variables that are create...
When you use the SYMPUT routine to create a macro variable in a DATA step, the macro variable is not actually created and assigned a value until the DATA step is executed.options symbolgen pagesize=30;%let crsnum=3;data revenue;set sasuser.all end=final;where course_number=&crsnum;total...
Macro(宏语言)示例 创建新table并提取data的前100行 删除数据前100行 纵向拼接数据_1 纵向拼接数据_2 SQL Variable名字拼接 导入数据前依据条件进行筛选(Data Step) 将数据等分10份 查看string中是否存在某个substring DATA STEP PROC FREQ PROC SORT PROC COMPARE SAS Others 创建Library 压缩数据集,节省空间 导出...
The following code is the last step in the SAS program: data _null_; call symput('mdate', input("&sysdate", date7.)); run; Which of the following is the value of the macro variable mdate? a. 14264 b. 14265 c. 20JAN99 d. 21JAN99 16. Given the following SAS data set Mylib...
5.写一个含有comment的macro(comment的内容不能执行)后面macro的内容是一个proc print的语句最后执行这个macro3用sql把region='AMR'的avg(var)存成一个macro variable; 6.所有的missing value全部变成0; 7.写一个array LS有LENGTH1-LENGTH3,另外一个array NEWNEWLENGTH1-NEWLENGTH3有一个data set LS单位是NEW是...