|UserNumber  | Variable1   | Variable2    |
|------------|-------------|--------------|
| 1          |      1      |  Yes, I do   |
| 1          |      5      |  No, I do not|

(1) User1
  (1) "4482359"
  (2) "12526"
  (3) "5"
  (4) ""
...
(2) User1
  (1) "5847895"
  (2) "33568"
  (3) "6"
  (4) "2"
...

query.Append("USE Import BULK INSERT dbo.[Insert_Table] FROM")
    query.Append(" 'C:UsersIDesktopInsert_Table.csv' ")
    query.Append("With (FIELDTERMINATOR = ',', ROWTERMINATOR = 'n')")