Hello, I have a sheet with 30.000 lines and columns from A to Y. On column C I have names, which repeat in different lines. The sheet is such that there are no duplicates when all lines and columns are considered. Whenever column C has duplicate names, I need the oldest lines deleted so that I only have the most recent line for each name. I tried deleting duplicates on column C, but excel will automaticaly shift names up after duplicates on that column are deleted, which messes with the correspondence of the other columns.
Could you suggest a way of having the oldest entries of each name deleted so as to have a list with only one, most recent, entrance for each name? Is there a way to have ecel delete duplicate names without shifitng cells up?
Thank you for your time,
You haven't said how you know which are the older names. I will assume the first time a hit a name it needs to stay and all others are deleted
in column Z in Z2 put in
now drag fill this down to Z30000
select column Z and apply a filter (in Excel 2007, go to the home tab, then Sort & Filter and in the dropdown select filter.)
so now you should have a dropdown arrow in Z1. Click on the arrow and select Delete. Now only the rows to be deleted should be visible. Select all the Data except Row 1 (your header row) and then go to the home tab, go to the cells button and select the delete dropdown and select entire rows.
go the Sort & filter dropdown and select filter again and the filter will be removed.
You should now have the records you want to keep.
Test this on a copy of your workbook to make sure it does what you want.
Again, I assumed you want to keep the first record/row of data that has that name. If that is not the newest record, then the formula would need to be changed to accomodate whatever your rule is for identifying the newest record.
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