This method uses the built in Advanced Filters functionality of Excel to hide the duplicate rows.Again, this identifies duplicates as rows where the column values are the same.Your VBA code can merge the duplicate rows as each spreadsheet is processed.This is discussed in the section, Under the Data ribbon in the Excel menu, there’s an option called Remove Duplicates.
Select all the data in the spreadsheet then click Remove Duplicates and you're done.Step by step instructions on how to do both of these options are, including example spreadsheets, are covered in How to merge worksheets from multiple Excel workbooks into one.Taking these approaches a step further, you may also want to de-duplicate the rows in the final spreadsheet.What you need to do in this case is map the columns from each spreadsheet onto the correct columns in the desired output spreadsheet.As an example of this situation, imagine you have 3 spreadsheets, each containing a single worksheet: To achieve this kind of mapping when merging spreadsheets, you will need to use VBA (Visual Basic For Applications).If you want more detail on how to merge and de-duplicate Excel files, see The Ultimate Guide on How to Merge Excel Files.Have you ever been stuck when you have to combine multiple workbooks into a single workbook in Excel?You can select multiple with holding down Ctrl key or Shift key.Right click the worksheet name, and click the Move or Copy from context menu. In Move or Copy dialog box, select the master workbook that you want to merge other workbooks into from the drop down list of Move selected sheets to book. The selected worksheets have been moved to the master workbook. Repeat the steps from 2 to 4 to move other workbooks to the master workbook.An example of this type of merge is where you have several spreadsheets, each containing a single worksheet with columns A to F populated with: Which option you choose really depends on how many spreadsheets you have to merge.More than a few and copy/paste becomes a real pain, as does converting them all to CSV files, so using VBA code may be your best option.