In this section, you will learn to read one of the most common input sources, plain files.
For demonstration purposes, we will use a simplified version of sales_data.csv that comes with the PDI bundle. Our sample file looks as follows:
ORDERDATE,ORDERNUMBER,ORDERLINENUMBER,PRODUCTCODE,PRODUCTLINE,QUANTITYORDERED,PRICEEACH,SALES2/20/2004 0:00 ,10223,10,S24_4278 ,Planes ,23,74.62,1716.2611/21/2004 0:00,10337,3,S18_4027 ,Classic Cars ,36,100 ,5679.366/16/2003 0:00 ,10131,2,S700_4002,Planes ,26,85.13,2213.387/6/2004 0:00 ,10266,5,S18_1984 ,Classic Cars ,49,100 ,6203.410/16/2004 0:00,10310,4,S24_2972 ,Classic Cars ,33,41.91,1383.0312/4/2004 0:00 ,10353,4,S700_2834,Planes ,48,68.8 ,3302.41/20/2005 0:00 ,10370,8,S12_1666 ,Trucks ...
