It would be hella sweet to have a way to easily track the row count after each applied step in a dataflow. This can be useful for seeing the impact of a filter step - but most useful in seeing the i...
miguel
Community Admin
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By design, Power Query tries to leverage lazy evaluation as much as possible. This means that we only try to compute things when necessary to not overload your data source or the compute resources need by Power Query.
While it is possible to use the "Count rows" feature from the "Transform" tab in the editor to get a count, it could be a pretty expensive operation that would take many minutes to compute depending on your data source and the resources available for the authoring session of the Dataflow.
