Column Blank Count Profile in Power Query M

Builds a summary table showing how many null or blank values each column contains.

Data CleaningIntermediateprofilingblanknullquality

Power Query M code

let
    Source = YourTable,
    ColumnNames = Table.ColumnNames(Source),
    Profile = Table.FromRecords(List.Transform(ColumnNames, each [
        ColumnName = _,
        BlankCount = Table.RowCount(Table.SelectRows(Source, (row) => Record.Field(row, _) = null or Record.Field(row, _) = ""))
    ]))
in
    Profile

Notes

Load this as its own query to get a one-glance data quality summary alongside your main table.

Requirements

Any table you want to profile for missing values.

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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