CREATE TABLE m0 (id UInt64) ENGINE=MergeTree ORDER BY id SETTINGS index_granularity = 1; INSERT INTO m0 SELECT number FROM numbers(10); CREATE TABLE m1 (id UInt64, s String) ENGINE=MergeTree ORDER BY id SETTINGS index_granularity = 1; INSERT INTO m1 SELECT number, 'boo' FROM numbers(10); CREATE VIEW m1v AS SELECT id FROM m1; CREATE TABLE m2 (id UInt64) ENGINE=Merge(currentDatabase(),'m0|m1v'); SELECT * FROM m2 WHERE id > 1 AND id < 5 ORDER BY id SETTINGS force_primary_key=1, max_bytes_to_read=64;