DROP TABLE IF EXISTS 02845_prewhere;

SET move_all_conditions_to_prewhere = 1;

CREATE TABLE  02845_prewhere  ( e String, c String, q String ) ENGINE = MergeTree ORDER BY tuple();

INSERT INTO 02845_prewhere SELECT number, number, number from numbers(10);

SELECT * FROM (SELECT * FROM 02845_prewhere WHERE e = '5' OR q = '6') WHERE (q = '6');