How To Remove Duplicates Using Power Query

This post explores how to do that. I found this scenario posted by Brian in a Facebook group here url.

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One of the most common transformations in Power Query is the Remove Duplicates.

How to remove duplicates using power query. In this article we will learn to sort data and remove duplicates with power query. Kudos are nice too. The Power Query editor will automatically open.

This completes our tutorial on How to Remove Duplicates in Power Query. You can select more than one column using the CTRL button and remove the duplicates accordingly. To select more than one column press Shift Click or Ctrl Click on each.

A few days ago I was checking social media to find interesting cases where Power Query could be a good solution. Go to Power Query Home tab Remove Rows Remove Duplicates. Some time ago I got an email from Alex asking me if there was a way to identify duplicates using Power Query but without removing non-duplicate records in the process.

If this solves your issues please mark it as the solution so that others can find it easily. But whenever I expand the merged table all rows get twice the duplicates. This transformation is used in many scenarios one of the examples is to create a dimension table with unique IDs in it so can be used as the source of a one to many relationships to fact tables in the relationship diagram of Power BI.

Go to Home Remove Rows Remove Duplicates STEP 4. Select the Employee ID value from the Get Items 1 and compare to the the Employee ID value from the Get Items 2. Select a column by clicking the column header.

Im trying to merge two queries using one column which contains duplicate values although the exact same amount of duplicates for the same values in both queries as key. To open a query locate one previously loaded from the Power Query Editor select a cell in the data and then select Query Edit. USING QUERY EDITOR POWER QUERY After loading your TableSelect all the ColumnsGo to Home Tab Remove RowsRemove Duplicates USING DAX CALCULATED TABLE We can create a Calculated Table which removes the Duplicates.

Now the Power Query window appears. It beautifully explains the reason why changing Sort Order in Power query doesnt work for removing duplicates and using TableBuffer to keep new Sorting Order in memory. Save and Close After you get the expected result just click on the save icon to save and Close and Apply button to close the Query Editor.

Select the first column in this case Rep. I am not an expert in Power Query and Ive tried several things including different tipes of join. Sharing this as it might be helpful in some other scenarios too.

Identify Duplicates Using Power Query. To remove the duplicate records based on the entire table click on the button present on the top left corner of the data preview. To remove duplicates based on one or more columns right-click on the specific column header.

Imagine a scenario where you have a column with text values but within each text string there are duplicates. To remove the duplicate rows go to Home Remove Rows button Remove Duplicates option Step 3. Right-click and apply the Remove Duplicates command.

Let us begin and learn to sort data and remove duplicates with power query. On the Home Tab Reduce Rows Group select the Remove Duplicates option. For more information see Create load or edit a query in Excel.

Select the Data Tab in the Get and Transform section choose the From Table Range option. Selected data is loaded into the Power Query Editor of Excel Right-click on the column header of the first column Select Remove Duplicates Note that in this particular case the record name is sufficient to spot the duplicates. All records after the first instance of the record are.

Working In Power Query. If your data doesnt have a column like this you can select multiple columns and apply this option. How to remove the Duplicates using Power Query in Excel is explained in this video.

The problem with removing duplicates is that power query keeps the first instance of the record and removes the duplicates. Click Close Load from the Home tab and this will open up a brand new worksheet in your Excel workbook with the cleaned table. That should set the loop up correctly.

Let me know if you have any questions. Posted on December 9 2015 by Ken Puls. You now have your new table with the remove duplicates power query.

This will find duplicates but its a pretty expensive query and it wont work for large lists above 5000 even after enabling pagination.

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