libname saslib 'C:\sas\data';data work.contact_manager work.contact_others; set saslib.contact; if position = 'Manager' then output work.contact_manager; else output work.contact_others;run;proc print data=work.contact_manager noobs; title 'Position is Manager';run;proc print data=work.con...
SAS不能直接识别的数据文件称之为外部文件,外部文件一般用于储存数据。 外部文件一般用来储存以下内容: 要读入SAS数据文件的原始数据; SAS程序语句 过程步输出 2.1.3 DNMS文件 SAS软件可以和其他数据库产品进行数据文件转换。比如数据文件方面使用最广泛的DBMS(database management system)数据库系统文件。 2.1.4 SAS语...
· If the first character of string is a single quotation mark, the DEQUOTE function removes that single quotation mark from the result. DEQUOTE then scans string from left to right, looking for more single quotation marks. Each pair of consecutive, single...
mouse=_n_; if length<=2 then do;group='A';output a;end; else if 3<=length<=4 then do;group='B';output b;end; else if 5<=length<=6 then do;group='C';output c;end; else do;group='D';output d;end; run; data aa; set a...
When you have a long series of mutually exclusive conditions and the comparison is numeric, using a SELECT group is slightly more efficient than using IF-THEN or IF- THEN-ELSE statements because CPU time is reduced. The syntax for SELECT WHEN is as follows : SELECT (condition); WHEN (1)...
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if a and b then output results.match08; else output results.nomatch08; 使用class的时候前三个都是固定参数.一个是class 一个是n 一个是var 最上面的是by,第一列是var 下面这种题就是每一条语句要考虑一次变量的值,一条一条过,否则就有可能出错. ...
Using %IF-%THEN-%ELSE in SAS Programs Introduction to the SQL Procedure Comparing PROC SQL with the SAS DATA Step PROC SQL - Joining Two Tables Recoding Values Recoding Ranges of Values Analyzing and Reporting on Your Data Overview: FREQ Procedure Example: One-Way Frequencies of Unit Sales ...
City State Region --- --- --- Tulsa OK Central Los CA Western Bangor 14 答案:A 本题知识点:IF 语句 若执行语句不能在一个语句完成,则使用复合语句 DO 和 END IF 条件 THEN 语句; 没有 ENDIF,没有 IF-ELSEIF-ELSE 多分支结构,语句 1 只能是一个语句。 IF 条件 THEN 语句 1; <ELSE ...
If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. Finally, any free program is threatened constantly by software ...