ATTACH TABLE _ UUID '2ada442b-4268-4955-82d9-1278ed20f266'
(
    `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
