Finding duplicate addresses
I have 2 spreadsheets within the same workbook that contains duplicate addresses. I need a macro or a formula to compare all of the addresses in a column with other addresses within that same column and the same column in the other worksheet to pull out duplicates over both worksheets.
Some days ago I was asked by my mother if there was an easy way to find duplicate photos on her computer. I thought about it and I came up with the idea that the easiest way to do this is to just compare if some hash matches between the files (which works fine as long the images are not modified). Then came the implementation and I thought since I know PHP best for this job, why not use it. Now I know that PHP hasnt much of a reputation as a command line scripting language, but bear with me .
I would like to "de-dupe" duplicate address in my spreadsheet. Any tips?
This is my first post of 2009, it may be a bit late but happy new year to you all.
I'm wondering if there is a solution to this problem:
I am dealing with at least 100k records in excel at a time (3 columns of 100k each, website, email address and unique if) what I need to do is 'reduplicate' the email address field without using in built excel conditional formating or by simply hitting remove dupes. This is mainly because conditional formatting would put a massive load on my computer and removing dupes just removes them, I want to know what is being taken out.
So in short I'm after a bit of special formula that will display duplicate records (email addresses) in the D column.
I have a several column worksheet. There may be several cells within those columns that have duplicate data. How do I set up some kind of formula to find all duplicate cells?
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