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Remove duplicate entries and only retain the most recent occurrence of each unique value

11/4/2018

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In this weeks blog post I will demonstrate how to omit duplicate records while only retaining the most recent occurrence of each unique record within a column. In the data set below we have a list of customer IDs along with dates on which each of those customers placed online orders within the year. 
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The goal is to only capture the most recent order per customer ID and delete all other remaining records. Four simple steps will help us achieve this.

STEP 1]
Create a helper column and generate an ascending sequence of numbers starting from 1 as shown below.
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STEP 2] Sort by “Order Date” (i.e. Column B) Descending.
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​STEP 3]
Remove duplicates from the “Customer ID” column.
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​STEP 4]
Sort by the helper column ascending.
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​Here is the final outcome depicting the most recent entry for each unique Customer ID.
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  • BLOG
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    • About WBD
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