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', 'c3crcqep30fmb8r3fd4q2vto93', '216.73.216.165', '1758141762', '1758141762', '/product_info.php?XTCsid=ec445a26a1be1b54e711876da9fff244&info=p19_10-Party-Teller.html')

[XT SQL Error]