INSERT INTO visitors (c_ts, hash, remote_addr, country_id, http_referer, user_agent) VALUES (1548039587, 'am2ysqz8o7g0xuq2dg7z', '54.144.24.41', '--', '', 'CCBot/2.0 (https://commoncrawl.org/faq/)') Duplicate entry 'am2ysqz8o7g0xuq2dg7z' for key 'hash'