INSERT INTO visitors (c_ts, hash, remote_addr, country_id, http_referer, user_agent) VALUES (1548199738, '65x3g1b68dia977l9aqj', '3.84.186.122', '--', '', 'CCBot/2.0 (https://commoncrawl.org/faq/)') Duplicate entry '65x3g1b68dia977l9aqj' for key 'hash'