ydb/yt/yql/tests/sql/suites/join/input8.txt.attr

{
    "_yql_row_spec"={
       "Type"=["StructType";[
            ["key";["DataType";"String"]];
            ["subkey";["DataType";"String"]];
            ["value";["DataType";"String"]]]
        ];
        "SortDirections"=[1;1];
       "SortedBy"=["key";"subkey"];
        "SortedByTypes"=[["DataType";"String"];["DataType";"String"]];
        "SortMembers"=["key";"subkey"];
    }
}