SET enable_analyzer = 1; DROP TABLE IF EXISTS test_table_join_1; CREATE TABLE test_table_join_1 ( id UInt64, value String ) ENGINE=MergeTree ORDER BY id SAMPLE BY id; INSERT INTO test_table_join_1 VALUES (0, 'Value'), (1, 'Value_1'); DROP TABLE IF EXISTS test_table_join_2; CREATE TABLE test_table_join_2 ( id UInt64, value String ) ENGINE=MergeTree ORDER BY id SAMPLE BY id; INSERT INTO test_table_join_2 VALUES (0, 'Value'), (1, 'Value_1'); SELECT t1.id AS t1_id, t2.id AS t2_id, t1._sample_factor AS t1_sample_factor, t2._sample_factor AS t2_sample_factor FROM test_table_join_1 AS t1 SAMPLE 1/2 INNER JOIN test_table_join_2 AS t2 SAMPLE 1/2 ON t1.id = t2.id; DROP TABLE test_table_join_1; DROP TABLE test_table_join_2;