文字列を切り出す
SUBSTR関数
trimmed_str = substr(str, start_pos, length);
...
https://documentation.sas.com/doc/ja/pgmsascdc/v_061/ds2ref/p0mce96o6y74fzn1ro3vtputzhut.htm
trimmed_str = substr(str, start_pos, length);
...
https://documentation.sas.com/doc/ja/pgmsascdc/v_061/ds2ref/p0mce96o6y74fzn1ro3vtputzhut.htm