DataJoin 实例 1,Stephanie Leung,555-555-5555,B,88.25,20-May-20082,Edward Kim,123-456-7890,C,32.00,30-Nov-20073,Jose Madriz,281-330-8004,A,12.95,02-Jun-20083,Jose Madriz,281-330-8004,D,25.02,22-Jan-2009
