Use query parameters

As we discussed in Chapter 3, Data Preparation in Power Query Editor, in the Understanding query parameters section, query parameters are one of the most valuable features of Power Query that can help us in many scenarios. The following sections explain some of them.

Parameterizing connections

It is best to parameterize all data source connections, especially if we have different environments. The parameterized connections become handy when configuring the deployment pipelines.

Restricting the row counts in development for large tables

Sometimes, we deal with large tables with several million rows, which can be time-consuming in development. Imagine a scenario in which we transform the data in Power Query Editor and then load it into the data model. If the table in the source system is large, it takes a long time to load the data into the data model, decreasing our productivity. In most cases, we do not need to load all the data into the data model...