Each transformation is recorded as a step in the background. There are many transformations you can make from the user interface. Whether the transformation is a data connection, a column removal, a merge, or a data type change, you can view and modify each transformation in the APPLIED STEPS section of the Query Settings pane. The Power Query Editor keeps track of everything you do with the data by recording and labelling each transformation, or step, that you apply to the data. You can open the Power Query Editor by selecting Launch Query Editor from the Get Data command in the Get & Transform Data group, but it also opens when you connect to a data source, create a new query, or load a query. Power Query uses a dedicated window called the Power Query Editor to facilitate and display data transformations. It needs shaping into a table that is suitable for your needs and that enables attractive reports and dashboards. A vase starts as a lump of clay that one shapes into something practical and beautiful. Each of these operations is a data transformation. This process of applying transformations (and combining) to one or more sets of data is also called shaping data.
For example, you can remove a column, change a data type, or filter rows. Transforming data means modifying it in some way to meet your data analysis requirements.
