How Deduplicate is Superior to Excel’s Remove Duplicates

Excel includes a standard duplicate removal tool called “Remove Duplicates”. I have used this tool before matching records using Smart Match (to avoid duplicate matching). While Remove Duplicates is useful, there are two fundamental issues to be aware of.

First, Remove Duplicates only removes exact matches within the Excel Sheet. On several occasions I’ve had two records that are the same, but because they come from different sources they aren’t exactly the same. One record may contain a contact with the name Anthony, but the same contact may be listed in another record as Tony. Remove Duplicates doesn’t give me any options for finding duplicates that aren’t exact matches.

The second issue I have with Remove Duplicates is the information it provides after removing the duplicates. The only information a user receives is the total number of removed records. Remove Duplicates won’t specify whether one record was duplicated several times or if several records were duplicated only once, or if there was some combination in between.

Deduplicate addresses these issues. When running Deduplicate I can access all the power of Aim-Smart’s matching logic, which allows for superior deduplication identification and reporting.

Here is an example of where Deduplicate results differ from Remove Duplicates. When using Remove Duplicates users have no ability to choose if duplicates are removed or not; in a way this isn’t a problem because every field matches exactly, so we know that we want the record removed. However, it leaves several possible duplicates (that vary by a small amount) untouched in the document. When using Deduplicate with the intelligent deduplicate logic we can see multiple sets of exact duplicates and we can see varying quality levels of other duplicates as well. This is useful when data may look like this.DeduplicateOriginal

Using Remove Duplicates on all columns, with the data provided, would only remove row 4 and leave Rows 2 and 5, which are of course real duplicates. Remove Duplicates allows us to choose limited columns to compare. If a user chose a column subset (Last, Address, State) then rows 2-5 would be removed, but row 3 is not actually a duplicate. Without Aim-Smart’s Deduplicate tool it would take a lot of time and effort to identify (and potentially remove) the approximate match duplicates.

Deduplicate is different. Users can enter several different deduplication options at the same time. For the case above one option would be to create deduplication parameters like these.Blog Screen Shot

With the options shown above Deduplicate will return the following results.DeduplicateResults

With these results a user is able to assess which matches are true matches and which ones aren’t true matches. The user then knows based on the [ID] which rows to remove in the original document. In addition users can easily see in the results how many duplicates each record group contains.

Thanks to these abilities and features Deduplicate is a more powerful tool than Excel’s Remove Duplicates tool.

Leave a Reply

Your email address will not be published. Required fields are marked *