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Which Power Query Operations Are Most Resource-Intensive?

Chris Webb answers a question:

Last year I wrote a post about a change in the Power BI Service that meant the CPU Time associated with Power Query transformations was added to the total shown for a dataset refresh operation in Profiler traces and Log Analytics:

This was useful, but it didn’t tell you directly how much CPU Time was used by Power Query and it didn’t tell you which tables or partitions in a refresh were using the most CPU. It also didn’t tell you anything about Power Query memory usage. The good news that recently there has been another change that solves these problems.

Click through for the solution.