Data engineering and IT

Query folding

When Power Query pushes your steps back to the source database instead of pulling all the data first.

  • Data engineering and IT

Definition

When Power Query pushes your steps back to the source database instead of pulling all the data first. It is the difference between a query that runs in seconds and one that runs in minutes.

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Why it matters

Where it is used

Power BI refreshes, especially against large databases.