```sql

drop table if exists t ;
drop table if exists temp ;

CREATE TABLE t
(
    game String,
    round String,
    casino Int32)
ENGINE = MergeTree() ORDER BY (casino, game, round);

CREATE TABLE temp
(
    game String,
    round String,
    casino Int32)
ENGINE = MergeTree() ORDER BY (casino, game, round);

insert into t(casino, game, round)
select number%103, toString(cityHash64(number%999)), toString(number) from numbers(3, 50000000);

insert into temp(casino, game, round)
select number%103, toString(cityHash64(number%999)), toString(number) from numbers(5000);

Q1: SELECT count(*)
FROM temp WHERE (casino, game, round) NOT IN
(     SELECT  casino, game, round
    FROM t
    WHERE (casino, game, round) IN
    (
        SELECT casino, game, round
        FROM temp
    )
)

21.3.1.5944  Elapsed: 4.464 sec. Processed 5.00 thousand rows, 225.89 KB (1.12 thousand rows/s., 50.60 KB/s.)

20.8.11.17    Elapsed: 0.611 sec. Processed 5.00 thousand rows, 225.89 KB (8.18 thousand rows/s., 369.73 KB/s.)

18.14.19.    Elapsed: 0.341 sec. Processed 5.00 thousand rows, 225.89 KB (14.66 thousand rows/s., 662.46 KB/s.)

```
}
    if (before_order_by)
    {
        ss << "before_order_by " << before_order_by->dumpDAG() << "\n";
    }
    if (before_limit_by)
    {
        ss << "before_limit_by " << before_limit_by->dumpDAG() << "\n";
    }
    if (final_projection)
    {
        ss << "final_projection " << final_projection->dumpDAG() << "\n";
    }
    if (!selected_columns.empty())
    {
        ss << "selected_columns ";
        for (size_t i = 0; i < selected_columns.size(); i++)
        {
            if (i > 0)
            {
                ss << ", ";
            }
            ss << backQuote(selected_columns[i]);
        }
        ss << "\n";
    }
    return ss.str();
}
}