Sort names alphabetically but keeping groups with same ID together

Hello joooffice 

check out this solution. Used Table.Group to group by ID with all rows and the first name found. Then sort for this name and expand afterwards

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("jZLNCsIwEIRfpeSsYBt/j1pQ0Yuo4KH0UEjQ4NpI2qK+vYm22rgJeArst7OT2SRJSNgPSYfsLqI86XPKKiiDKCBpp0GHTDF9xCcBLKBeEnqJa9rb56Pp6dJWFtxNZkrKc9G1GpqhdGwaKjyTDnVpLoArrMGoUUXGb8lFCSI//sXtjD5u6deZuv5eamRyxJW68fzX1IUalVnpRmozJMKk1gxN+lgqxgH+YvVESgdmbZDd3WQlc16gwL2JLi0k4C+EiV8Ttck+e4BU3brBftq21H6510KW4pXLtmsTexrWuMjXJ30C", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [ID = _t, Name = _t, Title = _t]),
    #"Changed Type" = Table.Buffer(Table.TransformColumnTypes(Source,{{"ID", Int64.Type}, {"Name", type text}, {"Title", type text}})),
    #"Grouped Rows" = Table.Group(#"Changed Type", {"ID"}, {{"AllRows", each _, type table [ID=number, Name=text, Title=text]},{"NameToSort", each _[Name]{0}}}),
    #"Sorted Rows" = Table.Sort(#"Grouped Rows",{{"NameToSort", Order.Ascending}}),
    #"Removed Other Columns" = Table.SelectColumns(#"Sorted Rows",{"AllRows"}),
    #"Expanded AllRows" = Table.ExpandTableColumn(#"Removed Other Columns", "AllRows", {"ID", "Name", "Title"}, {"ID", "Name", "Title"})
in
    #"Expanded AllRows"

Copy paste this code to the advanced editor in a new blank query to see how the solution works.

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Have fun

Jimmy