1366 - Incorrect integer value: '' for column 'customer_id' at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', 'n2b0qck00tk5ietk97ac2n2qk4', '216.73.216.141', '1751423493', '1751423493', '/index.php?cat=c5_Crockery.html&XTCsid=ca28ab8f46bb6e791b42fe9b92719761')

[XT SQL Error]