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Advocate I
Advocate I

Applied Steps and Re-quering Data Source

Using Power Query, each time you change a field type or expand a column does the step result in the data source being re-queried?


connect to a data source

filter rows

change column type

expand column


Would the steps outlined above result in one query back to the data source or multiple?

Super User
Super User

Usually one (there are some exceptions for schema retrieval - )


BUT- oftentimes it also results in zero queries for some steps when Query Folding is active.  That means any previous steps are combined into one native query.

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