DROP TABLE IF EXISTS uncomparable_keys; CREATE TABLE foo (id UInt64, key AggregateFunction(max, UInt64)) ENGINE MergeTree ORDER BY key; --{serverError 549} CREATE TABLE foo (id UInt64, key AggregateFunction(max, UInt64)) ENGINE MergeTree PARTITION BY key; --{serverError 549} CREATE TABLE foo (id UInt64, key AggregateFunction(max, UInt64)) ENGINE MergeTree ORDER BY (key) SAMPLE BY key; --{serverError 549} DROP TABLE IF EXISTS uncomparable_keys;