部分文字列を置換する
TRANWRD関数
str = tranwrd(inputstr, beforesubstr, after_substr);
...
https://documentation.sas.com/doc/ja/pgmsascdc/v_061/ds2ref/p01iwnq51ps93bn1t9d1eztkx8go.htm
str = tranwrd(inputstr, beforesubstr, after_substr);
...
https://documentation.sas.com/doc/ja/pgmsascdc/v_061/ds2ref/p01iwnq51ps93bn1t9d1eztkx8go.htm