```
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] [                                                                                                                                                                                                                                        <=>               ]
```

}                                                       \
                    kafka_settings->PAR_NAME =                              \
                        engine_args[(ARG_NUM)-1]->as<ASTLiteral &>().value; \
                }                                                           \
            }
        /** Arguments of engine is following:
          * - Kafka broker list
          * - List of topics
          * - Group ID (may be a constaint expression with a string result)
          * - Message format (string)
          * - Row delimiter
          * - Schema (optional, if the format supports it)
          * - Number of consumers
          * - Max block size for background consumption
          * - Skip (at least) unreadable messages number
          * - Do intermediate commits when the batch consumed and handled
          */
        String collection_name;
        if (named_collection)
        {
            collection_name = assert_cast<const ASTIdentifier *>(args.engine_args[0].get())->name();
        }
        else
        {
            /* 
            CHECK_KAFKA_STORAGE_ARGUMENT(1, kafka_broker_list, 0)
            CHECK_KAFKA_STORAGE_ARGUMENT(2, kafka_topic_list, 1)
            CHECK_KAFKA_STORAGE_ARGUMENT(3, kafka_group_name, 2)
            CHECK_KAFKA_STORAGE_ARGUMENT(4, kafka_format, 2)
            CHECK_KAFKA_STORAGE_ARGUMENT(5, kafka_row_delimiter, 2)