Summary  
This chapter demonstrates how to combine multiple tables by appending queries to form a single dataset and then merge in additional data using join operations (e.g., left join), with attention to the ordering of transformation steps so that all changes apply correctly. It also covers expanding merged columns to enrich the resulting table.

General domain of usage  
Data transformation

Start by combining data from two separate years using the **Append Queries** feature, which merges datasets into a **single table**. After that, apply various transformations to clean and prepare the data for analysis. Finally, **merge** the cost table dataset using a **left join** to ensure that all records are properly integrated. This process results in a comprehensive and well-structured dataset, ready for accurate and efficient analysis.


Which feature would you use to combine rows from different tables into one table in Power Query?

Appending and Merging Data