DROP TABLE IF EXISTS data2013; DROP TABLE IF EXISTS data2014; CREATE TABLE data2013 (name String, value UInt32) ENGINE = Memory; CREATE TABLE data2014 (name String, value UInt32) ENGINE = Memory; INSERT INTO data2013(name,value) VALUES('Alice', 1000); INSERT INTO data2013(name,value) VALUES('Bob', 2000); INSERT INTO data2013(name,value) VALUES('Carol', 5000); INSERT INTO data2014(name,value) VALUES('Alice', 2000); INSERT INTO data2014(name,value) VALUES('Bob', 2000); INSERT INTO data2014(name,value) VALUES('Dennis', 35000); SELECT val FROM (SELECT value AS val FROM data2013 WHERE name = 'Alice' UNION ALL SELECT value AS val FROM data2014 WHERE name = 'Alice') ORDER BY val ASC; DROP TABLE data2013; DROP TABLE data2014;