Joining excel records based on column data

Question

I have 3 excel spreadsheets with the same columns and (supposedly) the same data. I need to line up all 3 documents and look for inconsistencies within the data. The data is

Answer 1

Using macros, you can do it.

Sub Insert_Rows_Loop()
  Dim CurrentSheet As Object
  ' Loop through all selected sheets.
  For Each CurrentSheet In ActiveWindow.SelectedSheets
    ' Insert n rows depending on values
    //  **** 
    // Write your conditions 
    //  ****
    // Insert a row as below
    CurrentSheet.Range("b:b").EntireRow.Insert
    // Do other stuffs....
  Next CurrentSheet
End Sub