INSERT INTO visitors (c_ts, hash, remote_addr, country_id, http_referer, user_agent) VALUES (1548196749, 'zys0mhqb4a8c7x88ub1o', '3.84.186.122', '--', '', 'CCBot/2.0 (https://commoncrawl.org/faq/)') Duplicate entry 'zys0mhqb4a8c7x88ub1o' for key 'hash'