the power of inner joins working with power query

Power Query Joining: How to Combine Data from Multiple Sources in Exce

Power Query is a powerful tool for data cleaning and transformation in Excel. One of its key features is the ability to join data from multiple sources into a single table. In this article, we’ll show you how to use Power Query to join data from different sources in just a few simple steps.

Step 1: Load your data sources into Power Query

Before you can join data from multiple sources, you’ll need to load each source into Power Query. To do this, click on the "From Other Sources" dropdown in the "Get & Transform" group on the "Data" tab in the ribbon. Select the data source you want to load, such as an Excel spreadsheet or a CSV file, and follow the prompts to connect to the data source and load the data into Power Query.

Step 2: Create a join relationship

Once you’ve loaded your data sources into Power Query, you can create a join relationship between them. To do this, click on the "Home" tab in Power Query, select "Merge Queries" from the "Combine" group, and then choose the join type you want to use (e.g. Inner Join, Left Join, Right Join, or Full Outer Join).

You’ll then be prompted to select the columns you want to join on. Choose the column that contains the common data between the two data sources. For example, if you’re joining a sales data table with a product data table, you might join on the product ID column.

Step 3: Expand your joined data

After you’ve created your join relationship, you’ll need to expand your joined data. To do this, click on the double-headed arrow icon in the new column that was created when you joined the data sources. This will bring up a dialog box that allows you to select the columns you want to include in your final table.

Step 4: Load your joined data into Excel

Once you’ve expanded your joined data, you can load it into Excel by clicking on the "Close & Load" button in the Power Query editor. This will create a new table in Excel that combines the data from both sources.

Conclusion

Joining data from multiple sources can be a time-consuming and error-prone process in Excel. With Power Query, you can easily join data from different sources in just a few simple steps, allowing you to streamline your data analysis and reporting workflows. Whether you’re a beginner or an experienced Excel user, Power Query joining is a must-have tool for anyone who works with large amounts of data.


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