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', 'lri3tnt05vo6fch3c02uoj29q5', '216.73.216.167', '1762543698', '1762543698', '/shop_content.php?XTCsid=1ce6d0a6925740e42ccf6986944a240a&coID=3')

[XT SQL Error]