left_col,right_col,sample_type OrderDate,Date,P OrderDate,Day Name,P OrderDate,Start of Week,P OrderDate,Start of Month,P OrderDate,Month Name,P OrderDate,Start of Year,P OrderDate,Year,P OrderDate,Day of Week,P OrderDate,Week End,P OrderDate,Short Month,P OrderDate,Short Day,P StockDate,Start of Year,N StockDate,Year,N OrderNumber,StockDate,N OrderNumber,ProductKey,N CustomerKey,OrderDate,N CustomerKey,StockDate,N CustomerKey,OrderNumber,N CustomerKey,OrderLineItem,N CustomerKey,OrderQuantity,N CustomerKey,Date,N CustomerKey,Day Name,N CustomerKey,Start of Week,N CustomerKey,Start of Month,N CustomerKey,Month Name,N CustomerKey,Start of Year,N CustomerKey,Year,N CustomerKey,Day of Week,N CustomerKey,Week End,N CustomerKey,Short Month,N Start of Week,Start of Year,N Start of Week,Year,N