{
    "schema" = <
        "strict" = %true;
        "unique_keys" = %false;
    > [
        {
            "name" = "r_regionkey";
            "required" = %true;
            "sort_order" = "ascending";
            "type" = "int32";
            "type_v3" = "int32";
        };
        {
            "name" = "r_comment";
            "required" = %true;
            "type" = "string";
            "type_v3" = "string";
        };
        {
            "name" = "r_name";
            "required" = %true;
            "type" = "string";
            "type_v3" = "string";
        };
    ];
}