Hoja de preparación de datos

data mycas.doc_info; infile datalines delimiter=','; input docid varchar(10) category varchar(10); datalines; 1,sports 2,other 3,sports 4,other 5,sports ; run; data mycas.term_doc; infile datalines delimiter=','; input _document_ varchar(10) _termnum_ varchar(10); datalines; 1,1 1,2 2,3 2,4 3,1 3,5 4,4 4,6 5,2 5,5 ; run; data mycas.term_info; infile datalines delimiter=','; input term_id varchar(10) term_label varchar(20); datalines; 1,basketball 2,score 3,finance 4,market 5,game 6,trade ; run;