Group by date range - Powe query

Hi, Alex_nor ;

See the working here - Open a blank query - Home - Advanced Editor - Remove everything from there and paste the below code to test.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("ZdJLDoAgEATRu7A2wenh51kM97+GiRoIxY5qXbyI9x1KlEedUjhC6Mc7JA6ZQ+FQOTQOFwY/l6FGQwvt6IQeyHH89oL3KrqhL7o2KKVGqtFqxFrmQKbRaYQapaJU2zelVJSKUlEqSkXpvPx5/p+QvP0FvpJbZAvt6ITO6IKu6IYe4nHs/QE=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Timestamp = _t, LoadDate = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Timestamp", type date}, {"LoadDate", type date}}),
    #"Sorted Rows" = Table.Sort(#"Changed Type",{{"Timestamp", Order.Ascending}}),
    #"Added Custom" = Table.AddColumn(#"Sorted Rows", "Custom", each [LoadDate]),
    #"Filled Up" = Table.FillUp(#"Added Custom",{"Custom"}),
    #"Added Conditional Column" = Table.AddColumn(#"Filled Up", "Load Id", each if [Timestamp] = [Custom] then null else [Custom]),
    #"Filled Up1" = Table.FillUp(#"Added Conditional Column",{"Load Id"}),
    #"Removed Columns" = Table.RemoveColumns(#"Filled Up1",{"Custom"})
in
    #"Removed Columns"

The final show:

Best Regards,
Community Support Team _ Yalan Wu
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