DROP TABLE IF EXISTS test1; DROP TABLE IF EXISTS test2; CREATE TABLE test1 ( `col1` UInt64, `col2` Int8 ) ENGINE = MergeTree ORDER BY col1; CREATE TABLE test2 ( `col1` UInt64, `col3` Int16 ) ENGINE = MergeTree ORDER BY col1; INSERT INTO test1 VALUES (123, 123), (12321, -30), (321, -32); INSERT INTO test2 VALUES (123, 5600), (321, 5601); SET join_use_nulls = 1; -- { echoOn } SELECT * FROM test1 LEFT JOIN test2 ON test1.col1 = test2.col1 WHERE test2.col1 IS NULL ORDER BY test2.col1 ; SELECT * FROM test2 RIGHT JOIN test1 ON test2.col1 = test1.col1 WHERE test2.col1 IS NULL ORDER BY test2.col1 ; SELECT * FROM test1 LEFT JOIN test2 ON test1.col1 = test2.col1 WHERE test2.col1 IS NOT NULL ORDER BY test2.col1 ; SELECT * FROM test2 RIGHT JOIN test1 ON test2.col1 = test1.col1 WHERE test2.col1 IS NOT NULL ORDER BY test2.col1 ; SELECT test2.col1, test1.* FROM test2 RIGHT JOIN test1 ON test2.col1 = test1.col1 WHERE test2.col1 IS NOT NULL ORDER BY test2.col1 ; SELECT test2.col3, test1.* FROM test2 RIGHT JOIN test1 ON test2.col1 = test1.col1 WHERE test2.col1 IS NOT NULL ORDER BY test2.col1 ; DROP TABLE IF EXISTS test1; DROP TABLE IF EXISTS test2;