CREATE TABLE hits_10m_words (word String, UserID UInt64) ENGINE Memory CREATE TABLE strings (short String, long String) ENGINE Memory INSERT INTO hits_10m_words SELECT DISTINCT arrayJoin(splitByString(' ', SearchPhrase)) AS word, UserID FROM hits_10m_single WHERE length(word) > 0 INSERT INTO strings SELECT toString(rand()) a, a || a || a || a || a || a || a || a || a || a || a || a FROM zeros(1000000) 1 SELECT 1 FROM hits_10m_words AS l ANY LEFT JOIN hits_10m_words AS r USING (word) FORMAT Null SELECT 1 FROM strings AS l ANY LEFT JOIN strings AS r USING (short) FORMAT Null SELECT 1 FROM strings AS l ANY LEFT JOIN strings AS r USING (long) FORMAT Null DROP TABLE IF EXISTS hits_10m_words DROP TABLE IF EXISTS strings