In 2026, adding new data to an existing Power BI model is handled in three different ways depending on your goal: adding rows (more records), adding columns (more details), or adding new files automatically.

Here is the 2026 guide to each method:

1. Adding More Rows (Appending)

Use this when you have new data with the same columns as your existing data (e.g., adding "March Sales" to "January and February Sales"). Power BI Training in Bangalore

• How to do it:

1. In Power BI Desktop, click Transform Data to open the Power Query Editor.

2. On the Home tab, click Append Queries.

3. Select Append Queries as New (best practice to keep your original tables intact).

4. Choose the tables you want to stack and click OK. Power BI will vertically "stack" the data into one master table.

• Pro Tip: If your columns don't match exactly, Power BI will create new columns and fill the missing cells with null.

2. Adding More Columns (Merging)

Use this when you want to bring in additional information based on a shared ID (e.g., adding "Product Category" to a "Sales" table using a "Product ID").

• How to do it:

1. In Power Query, select your primary table.

2. Click Merge Queries on the Home tab.

3. Select the second table and click the matching column in both (e.g., CustomerID).

4. Choose your "Join Kind" (usually Left Outer).

5. Once merged, click the small "Expand" icon (two arrows) in the new column header to select which specific columns you want to add.

3. Automating New Data (The Folder Connector)

If you frequently get new Excel or CSV files in a specific folder, don't add them manually every time.

• How to do it:

1. Go to Get Data > Folder.

2. Point Power BI to the folder path.

3. Click Combine & Transform. Power BI Training Course Certification Bangalore

• Result: Every time you drop a new file into that folder and click Refresh in Power BI, the new data is automatically added to your report.

Summary Table: Which method should you use?

Conclusion

In 2026,Power BI  will be more important than ever for advancing careers across many different industries. As we've seen, there are several exciting career paths you can take with Power BI  , each providing unique ways to work with data and drive impactful decisions., At Nearlearn is the Top Power BI Training in Bangalore we understand the power of data and are dedicated to providing top-notch training solutions that empower professionals to harness this power effectively. One of the most transformative tools we train individuals on isPower BI.