To find and replace a text string is a common task. This paper describes an approach to find and replace a text string in any given file or multiple files and in a given folder/subfolders through a SAS macro, %StrSrch. This paperprovides an overview of the unique recursive macro design...
check:查找键值,假设存在则返回rc=0,不改动当前变量的值; output:将hash表输出到数据集 clear:清空hash表,但并不删除对象 equal:推断两个hash类是否相等 find方法的演示样例: libname chapt12 ‘f:\data_model\book_data\chapt12’; data results; if _n_=0 then set chapt12.participants; if _n_ = 1 ...
%macrochk_log_ds(ds,loop);/*使用infile 导入数据*/data&ds._1;length type $100.;infile fn&loop.end=last;input desc $1-5000@@;line=_N_;ifindex(desc,"_ERROR_")then type="B_ERROR_";/*_ERROR_在数据操作中会有点问题,暂且在前面加一个字符后续会转化回去*/elseifindex(desc,"ERROR")the...
其语法形式如下 find(string,find-string, modifiers,starting-position) 13、字符串拆分函数Scan.Scan函数提出以空格或标点符号隔开的第n个单词。不同于trim,trim只是提取字符。 【功能】从字符表达式s中搜取给定的n个单词 【类别】 字符函数 【语法】 1. Scan(s,n) n为正数时,从字符s末尾提取n个字符 2. Sca...
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INDEX(arg, 'string') :返回指定字符在变量中的位置。 LEFT(arg) :字符串左对齐。 LENGTH(arg):返回字符串长度,不考虑尾部空格。 PROPCASE(arg) :首字母大写。 SUBSTR(arg,position,n):从字符串中提取指定开始位置指定长度字符。 TRANSLATE(source,to-1, from-1,...to-n,from-n):替换字符。
【例子】 data _null_; Text='CHUSINA, us, US, Denmark'; X1=find(Text,'US','i',5); X2=find(Text,'US',5); X3=find(Text,'US'); PUT X1= X2= X3=; run; 结果是:X1=10 X2=14 X3=3 7.INDEX [功能]返回字符串中某个字符或字符串的位置 ...
find:查找健值,假设存在则将值写入相应变量 check:查找键值,假设存在则返回rc=0,不改动当前变量的值; output:将hash表输出到数据集 clear:清空hash表,但并不删除对象 equal:推断两个hash类是否相等 find方法的演示样例: libname chapt12 'f:\data_model\book_data\chapt12'; ...
if find3 then substr3 = substr(text, find3, 4); /* Extract 4 characters starting from find3 */ else substr3 = ''; datalines; This is a test string with sub1, another sub2 and also sub3 in it. Another string with only sub1 and sub3. ...
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