-------No need for predicate optimization, but still works------- 1 1 1 2000-01-01 1 test string 1 1 -------Forbid push down------- SELECT count() FROM ( SELECT [number] AS a, [number * 2] AS b FROM system.numbers LIMIT 1 ) AS t ARRAY JOIN a, b WHERE NOT ignore(a + b) 1 SELECT a, b FROM ( SELECT 1 AS a ) ANY LEFT JOIN ( SELECT 1 AS a, 1 AS b ) USING (a) WHERE b = 0 SELECT a, b FROM ( SELECT 1 AS a, 1 AS b ) ANY RIGHT JOIN ( SELECT 1 AS a ) USING (a) WHERE b = 0 SELECT a, b FROM ( SELECT 1 AS a ) ANY FULL OUTER JOIN ( SELECT 1 AS a, 1 AS b ) USING (a) WHERE b = 0 SELECT a, b FROM ( SELECT 1 AS a, 1 AS b ) ANY FULL OUTER JOIN ( SELECT 1 AS a ) USING (a) WHERE b = 0 -------Need push down------- SELECT toString(value) AS value FROM ( SELECT 1 AS value ) 1 SELECT id FROM ( SELECT 1 AS id UNION ALL SELECT 2 AS `--predicate_optimizer_0` WHERE 0 ) WHERE id = 1 1 SELECT id FROM ( SELECT arrayJoin([1, 2, 3]) AS id WHERE id = 1 ) WHERE id = 1 1 SELECT id FROM ( SELECT arrayJoin([1, 2, 3]) AS id WHERE id = 1 ) WHERE id = 1 1 SELECT id, subquery FROM ( SELECT 1 AS id, identity(cast(1, \'UInt8\')) AS subquery ) WHERE subquery = 1 1 1 SELECT a, b FROM ( SELECT toUInt64(sum(id) AS b) AS a, b FROM test_00597 HAVING a = 3 ) WHERE a = 3 3 3 SELECT date, id, name, value FROM ( SELECT date, name, value, min(id) AS id FROM test_00597 GROUP BY date, name, value HAVING id = 1 ) WHERE id = 1 2000-01-01 1 test string 1 1 SELECT a, b FROM ( SELECT toUInt64(sum(id) AS b) AS a, b FROM test_00597 AS table_alias HAVING b = 3 ) AS outer_table_alias WHERE b = 3 3 3 SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM test_00597 WHERE id = 1 ) WHERE id = 1 2000-01-01 1 test string 1 1 SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM test_00597 WHERE id = 1 ) WHERE id = 1 ) WHERE id = 1 2000-01-01 1 test string 1 1 SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM test_00597 WHERE id = 1 ) AS b WHERE id = 1 ) WHERE id = 1 2000-01-01 1 test string 1 1 SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM test_00597 WHERE id = 1 ) WHERE id = 1 2000-01-01 1 test string 1 1 SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM test_00597 WHERE id = 1 ) WHERE id = 1 ) WHERE id = 1 2000-01-01 1 test string 1 1 SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM test_00597 WHERE id = 1 ) AS b WHERE id = 1 2000-01-01 1 test string 1 1 SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM test_00597 WHERE id = 1 ) AS a WHERE id = 1 ) AS b WHERE id = 1 2000-01-01 1 test string 1 1 SELECT id, date, value FROM ( SELECT id, date, min(value) AS value FROM test_00597 WHERE id = 1 GROUP BY id, date ) WHERE id = 1 1 2000-01-01 1 SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM test_00597 WHERE id = 1 UNION ALL SELECT date, id, name, value FROM test_00597 WHERE id = 1 ) WHERE id = 1 2000-01-01 1 test string 1 1 2000-01-01 1 test string 1 1 SELECT date, id, name, value, date, name, value FROM ( SELECT date, id, name, value FROM test_00597 WHERE id = 1 ) ANY LEFT JOIN ( SELECT id FROM test_00597 ) USING (id) WHERE id = 1 2000-01-01 1 test string 1 1 2000-01-01 test string 1 1 SELECT id, date, name, value FROM ( SELECT toInt8(1) AS id ) ANY LEFT JOIN ( SELECT date, id, name, value FROM test_00597 ) AS test_00597 USING (id) WHERE value = 1 1 2000-01-01 test string 1 1 SELECT value FROM ( SELECT toInt8(1) AS id ) ANY LEFT JOIN test_00597 AS b USING (id) WHERE value = 1 1 SELECT date, id, name, value FROM ( SELECT date, id, name, value, date, name, value FROM ( SELECT date, id, name, value FROM test_00597 WHERE id = 1 ) ANY LEFT JOIN ( SELECT id FROM test_00597 ) USING (id) WHERE id = 1 ) WHERE id = 1 2000-01-01 1 test string 1 1 SELECT date, id, name, value, b.date, b.name, b.value FROM ( SELECT date, id, name, value FROM test_00597 ) ANY LEFT JOIN ( SELECT date, id, name, value FROM test_00597 ) AS b USING (id) WHERE b.id = 1 2000-01-01 1 test string 1 1 2000-01-01 test string 1 1 SELECT id, date, name, value FROM ( SELECT toInt8(1) AS id, toDate(\'2000-01-01\') AS date FROM system.numbers LIMIT 1 ) ANY LEFT JOIN ( SELECT date, id, name, value FROM test_00597 ) AS b USING (date, id) WHERE b.date = toDate(\'2000-01-01\') 1 2000-01-01 test string 1 1 SELECT date, id, name, value, `b.date`, `b.id`, `b.name`, `b.value` FROM ( SELECT date, id, name, value, b.date, b.id, b.name, b.value FROM ( SELECT date, id, name, value FROM test_00597 WHERE id = 1 ) AS a ANY LEFT JOIN ( SELECT date, id, name, value FROM test_00597 ) AS b ON id = b.id WHERE id = 1 ) WHERE id = 1 2000-01-01 1 test string 1 1 2000-01-01 1 test string 1 1 SELECT date, id, name, value, r.date, r.name, r.value FROM ( SELECT date, id, name, value FROM test_00597 ) SEMI LEFT JOIN ( SELECT date, id, name, value FROM ( SELECT date, id, name, value FROM test_00597 WHERE id = 1 ) WHERE id = 1 ) AS r USING (id) WHERE r.id = 1 2000-01-01 1 test string 1 1 2000-01-01 test string 1 1