DROP TABLE IF EXISTS using1; DROP TABLE IF EXISTS using2; CREATE TABLE using1(a UInt8, b UInt8) ENGINE=Memory; CREATE TABLE using2(a UInt8, b UInt8) ENGINE=Memory; INSERT INTO using1 VALUES (1, 1) (2, 2) (3, 3); INSERT INTO using2 VALUES (4, 4) (2, 2) (3, 3); SELECT * FROM using1 ALL LEFT JOIN (SELECT * FROM using2) js2 USING (a, a, a, b, b, b, a, a) ORDER BY a; DROP TABLE using1; DROP TABLE using2; -- drop table if exists persons; drop table if exists children; create table persons (id String, name String) engine MergeTree order by id; create table children (id String, childName String) engine MergeTree order by id; insert into persons (id, name) values ('1', 'John'), ('2', 'Jack'), ('3', 'Daniel'), ('4', 'James'), ('5', 'Amanda'); insert into children (id, childName) values ('1', 'Robert'), ('1', 'Susan'), ('3', 'Sarah'), ('4', 'David'), ('4', 'Joseph'), ('5', 'Robert'); select * from persons all inner join children using id order by id, name, childName; select * from persons all inner join (select * from children) as j using id order by id, name, childName; select * from (select * from persons) as s all inner join (select * from children ) as j using id order by id, name, childName; -- set joined_subquery_requires_alias = 0; select * from persons all inner join (select * from children) using id order by id, name, childName; select * from (select * from persons) all inner join (select * from children) using id order by id, name, childName; select * from (select * from persons) as s all inner join (select * from children) using id order by id, name, childName; drop table persons; drop table children;