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', '44mbeqp3c09392sia9spuga2i1', '216.73.216.9', '1757984587', '1757984587', '/product_info.php?XTCsid=7f3d063595fd0cf7dd24ecea4b1409d6&info=p6_100-Paper-Plates.html')

[XT SQL Error]