How can I append, combine, or union data in Power Query?

In Power Query, you can use the Append Queries feature to combine multiple queries into one, merging their data into a single query.

Steps:

1. Navigate to the Home tab and click Transform Data. This would open the Power Query Editor.
2. Select the query to which you want to append data.
3. Navigate to Home tab, then within the Combine group, click Append Queries. From the popup that appears, choose between Append
4. Queries and Append Queries as New. Then choose whether it is with Two Tables or from Three or More Tables, depending on your needs.
5. Select the tables to be appended, and then click OK to confirm.

One thing that is important to mention is that the Append operation in Power Query is somewhat similar to what Union All is in SQL. But the difference is, in Union All, we can have only those tables in which the number of columns is the same, whereas in Append, we can combine two tables even if the number of columns in both tables is different.