ATTACH TABLE _ UUID 'e405f6fc-2072-4ec2-9389-068a6183f80e'
(
    `timeseries_name` String,
    `timeseries_key` UInt64,
    `timestamp` DateTime64(9, 'UTC'),
    `datum` Nullable(UInt64)
)
ENGINE = MergeTree
ORDER BY (timeseries_name, timeseries_key, timestamp)
TTL toDateTime(timestamp) + toIntervalDay(30)
SETTINGS index_granularity = 8192
