test
```sql
DROP TABLE IF EXISTS t;
DROP TABLE IF EXISTS t_mv;
create table t (a UInt64) Engine = Null;
create materialized view t_mv Engine = Null AS select now() as ts, max(a) from t group by ts;
insert into t select * from numbers_mt(3000000000) settings max_threads = 16, max_insert_threads=16;
```

results:
```
21.8:  
0 rows in set. Elapsed: 3.841 sec. Processed 3.00 billion rows, 24.00 GB (781.01 million rows/s., 6.25 GB/s.)

21.10: 
0 rows in set. Elapsed: 3.844 sec. Processed 6.00 billion rows, 48.00 GB (1.56 billion rows/s., 12.49 GB/s.)

21.11:
0 rows in set. Elapsed: 17.717 sec. Processed 5.98 billion rows, 47.86 GB (337.70 million rows/s., 2.70 GB/s.)

21.12
0 rows in set. Elapsed: 18.569 sec. Processed 6.00 billion rows, 48.00 GB (323.12 million rows/s., 2.58 GB/s.)

22.1
0 rows in set. Elapsed: 19.124 sec. Processed 6.00 billion rows, 48.00 GB (313.74 million rows/s., 2.51 GB/s.)

22.2
0 rows in set. Elapsed: 19.939 sec. Processed 6.00 billion rows, 48.00 GB (300.92 million rows/s., 2.41 GB/s.)

22.3
0 rows in set. Elapsed: 18.727 sec. Processed 6.00 billion rows, 48.00 GB (320.39 million rows/s., 2.56 GB/s.)

22.4
0 rows in set. Elapsed: 19.698 sec. Processed 6.00 billion rows, 48.00 GB (304.60 million rows/s., 2.44 GB/s.)

22.5
0 rows in set. Elapsed: 22.723 sec. Processed 6.00 billion rows, 48.00 GB (264.05 million rows/s., 2.11 GB/s.)
```

SIde note: pay attention to processed rows and progress bar behavior (minor cosmetic issue).
pipeline.setSinks([&](const Block & cur_header, QueryPipelineBuilder::StreamType) -> ProcessorPtr
        {
            return std::make_shared<EmptySink>(cur_header);
        });
        if (!allow_materialized)
        {
            for (const auto & column : metadata_snapshot->getColumns())
                if (column.default_desc.kind == ColumnDefaultKind::Materialized && header.has(column.name))
                    throw Exception("Cannot insert column " + column.name + ", because it is MATERIALIZED column.", ErrorCodes::ILLEGAL_COLUMN);
        }
        res.pipeline = QueryPipelineBuilder::getPipeline(std::move(pipeline));
    }
    else
    {
        res.pipeline = QueryPipeline(std::move(out_chains.at(0)));
        res.pipeline.setNumThreads(std::min<size_t>(res.pipeline.getNumThreads(), settings.max_threads));
        if (query.hasInlinedData() && !async_insert)
        {
            
            auto pipe = getSourceFromASTInsertQuery(query_ptr, true, query_sample_block, getContext(), nullptr);
            res.pipeline.complete(std::move(pipe));
        }
    }
    res.pipeline.addResources(std::move(resources));
    res.pipeline.addStorageHolder(table);
    if (inner_table)
        res.pipeline.addStorageHolder(inner_table);
    return res;
}
StorageID InterpreterInsertQuery::getDatabaseTable() const