ATTACH TABLE _ UUID '8e615368-1db6-4f74-8fd7-2f056b53e861'
(
    `timeseries_name` String,
    `timeseries_key` UInt64,
    `start_time` DateTime64(9, 'UTC'),
    `timestamp` DateTime64(9, 'UTC'),
    `datum` Nullable(UInt64)
)
ENGINE = MergeTree
ORDER BY (timeseries_name, timeseries_key, start_time, timestamp)
TTL toDateTime(timestamp) + toIntervalDay(30)
SETTINGS index_granularity = 8192
