Hoja de preparación de datos

proc cas; datastep.runCode / code='data mycas.reviews; length docId $ 50; length text $ 300; infile datalines delimiter="|"; input docId $ text $; datalines; doc1|The food was great and the service was excellent. doc2|The room was clean, but the staff was not friendly. doc3|I enjoyed the movie, the plot was amazing. doc4|The product broke after a few days, very poor quality. ; run;'; quit;