Keep the Latest Record per ID in Power Query M

Groups by an ID column and keeps only the most recent row per group, based on a date column.

Row OperationsIntermediatelatestgroupdeduplicatedate

Power Query M code

let
    Source = YourTable,
    Sorted = Table.Sort(Source, {{"Date", Order.Descending}}),
    Grouped = Table.Group(Sorted, {"ID"}, {{"Latest", each Table.FirstN(_, 1)}}),
    Combined = Table.Combine(Grouped[Latest])
in
    Combined

Generate a date table in Power Query M

Notes

Replace ID and Date with your key column and date column names.

Requirements

How to use this snippet

  1. 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).
  2. Paste the snippet and replace the placeholder names (tables, columns, file paths) with your own. Check the requirements above first.
  3. Run it through the Power Query M Formatter to tidy the layout.

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