CREATE DATABASE IF NOT EXISTS test; DROP TABLE IF EXISTS a1; DROP TABLE IF EXISTS a2; SET send_logs_level = 'none'; CREATE TABLE a1(a UInt8, b UInt8) ENGINE=Memory; CREATE TABLE a2(a UInt8, b UInt8) ENGINE=Memory; INSERT INTO a1 VALUES (1, 1); INSERT INTO a1 VALUES (1, 2); INSERT INTO a1 VALUES (1, 3); INSERT INTO a2 VALUES (1, 2); INSERT INTO a2 VALUES (1, 3); INSERT INTO a2 VALUES (1, 4); SELECT a, b FROM a1 LEFT JOIN (SELECT a, b FROM a2) USING a ORDER BY b SETTINGS join_default_strictness='ANY'; SELECT a, b FROM a1 LEFT JOIN (SELECT a, b FROM a2) USING a ORDER BY b; -- default SETTINGS join_default_strictness='ALL'; DROP TABLE IF EXISTS a1; DROP TABLE IF EXISTS a2;