```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.)

```
{
    setThreadName("QueryPipelineEx");
    try
    {
        if (thread_group)
            CurrentThread::attachTo(thread_group);
        SCOPE_EXIT(
            if (thread_group)
                CurrentThread::detachQueryIfNotDetached();
        );
        data.executor->execute(num_threads);
    }
    catch (...)
    {
        data.exception = std::current_exception();
        data.has_exception = true;
    }
    data.is_finished = true;
    data.finish_event.set();
}
bool PullingAsyncPipelineExecutor::pull(Chunk & chunk, uint64_t milliseconds)
{
    if (!data)
    {
        data = std::make_unique<Data>();
        data->executor = pipeline.execute();
        auto func = [&, thread_group = CurrentThread::getGroup()]()
        {
            threadFunction(*data, thread_group, pipeline.getNumThreads());
        };