Rename Columns Dynamically in Power Query M

Renames columns from a lookup list, skipping any pair whose old name isn't present.

Column OperationsIntermediaterenamedynamiccolumns

Power Query M code

let
    Source = YourTable,
    RenameList = {{"col1", "OrderID"}, {"col2", "OrderDate"}},
    ExistingRenames = List.Select(RenameList, each List.Contains(Table.ColumnNames(Source), _{0})),
    RenamedColumns = Table.RenameColumns(Source, ExistingRenames)
in
    RenamedColumns

Notes

Each pair is {"OldName", "NewName"}.

Requirements

A table whose original column names may vary between refreshes.

How to use this snippet

In Power BI Desktop, choose Transform data to open Power Query, then open the Advanced Editor on a query (or start from a blank query).
Paste the snippet and replace the placeholder names (tables, columns, file paths) with your own. Check the requirements above first.
Run it through the Power Query M Formatter to tidy the layout.

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