ATTACH TABLE _ UUID 'e54e65dc-f7c1-4496-a770-fbb7755a1f6d'
(
    `timeseries_name` String,
    `timeseries_key` UInt64,
    `timestamp` DateTime64(9, 'UTC'),
    `datum` Nullable(UInt16)
)
ENGINE = MergeTree
ORDER BY (timeseries_name, timeseries_key, timestamp)
TTL toDateTime(timestamp) + toIntervalDay(30)
SETTINGS index_granularity = 8192
