ATTACH TABLE _ UUID '534775a2-aba1-4972-87bf-555b77761415'
(
    `timeseries_name` String,
    `timeseries_key` UInt64,
    `start_time` DateTime64(9, 'UTC'),
    `timestamp` DateTime64(9, 'UTC'),
    `datum` Nullable(Int64)
)
ENGINE = MergeTree
ORDER BY (timeseries_name, timeseries_key, start_time, timestamp)
TTL toDateTime(timestamp) + toIntervalDay(30)
SETTINGS index_granularity = 8192
