```
ubuntu@ip-172-31-79-147:/opt/downloads$ clickhouse-local --max_threads 8 --query "WITH parseDateTimeBestEffort(extract(_path, 'pageviews-([\\d\\-]+)\\.gz$')) AS time, splitByChar(' ', line) AS values, splitByChar('.', values[1]) AS projects SELECT time, projects[1] AS project, projects[2] AS subproject, values[2] AS path, (values[3])::UInt64 AS hits FROM file('pageviews*.gz', LineAsString) WHERE length(values) >= 3" | pv > /dev/null
^C01GiB 0:01:08 [ 129MiB/s] [                                                                                                                                                                   <=>                                                                                    ]

ubuntu@ip-172-31-79-147:/opt/downloads$ clickhouse-local --max_threads 8 --query "WITH parseDateTimeBestEffort(extract(toLowCardinality(_path), 'pageviews-([\\d\\-]+)\\.gz$')) AS time, splitByChar(' ', line) AS values, splitByChar('.', values[1]) AS projects SELECT time, projects[1] AS project, projects[2] AS subproject, values[2] AS path, (values[3])::UInt64 AS hits FROM file('pageviews*.gz', LineAsString) WHERE length(values) >= 3" | pv > /dev/null
^C46GiB 0:00:48 [ 175MiB/s] [                                                                                                                                                                                                                                        <=>               ]
```

{
    auto cluster = getCluster();
    const auto & settings = local_context->getSettingsRef();
    
    if (!storage_policy && !owned_cluster && !settings.insert_distributed_sync && !settings.insert_shard_id)
    {
        throw Exception("Storage " + getName() + " must have own data directory to enable asynchronous inserts",
                        ErrorCodes::BAD_ARGUMENTS);
    }
    auto shard_num = cluster->getLocalShardCount() + cluster->getRemoteShardCount();
    
    if (!settings.insert_shard_id && !settings.insert_distributed_one_random_shard && !has_sharding_key && shard_num >= 2)
    {
        throw Exception(
            "Method write is not supported by storage " + getName() + " with more than one shard and no sharding key provided",
            ErrorCodes::STORAGE_REQUIRES_PARAMETER);
    }
    if (settings.insert_shard_id && settings.insert_shard_id > shard_num)
    {