CounterID	UInt32		
StartDate	Date		
UserID	UInt32		
VisitID	UInt32		
NestedColumn.A	Array(UInt8)		
NestedColumn.S	Array(String)		
ToDrop	UInt32		
Added0	UInt32		
Added1	UInt32		
Added2	UInt32		
AddedNested1.A	Array(UInt32)		
AddedNested1.B	Array(UInt64)		
AddedNested1.C	Array(String)		
AddedNested2.A	Array(UInt32)		
AddedNested2.B	Array(UInt64)		
CounterID	UInt32		
StartDate	Date		
UserID	UInt32		
VisitID	UInt32		
Added0	String		
Added1	UInt32		
Added2	UInt32		
AddedNested1.A	Array(UInt32)		
AddedNested1.C	Array(String)		
AddedNested2.A	Array(UInt32)		
AddedNested2.B	Array(UInt64)		
1	2014-01-01	2	3		0	0	[]	[]	[]	[]