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', 'f2immhvufljv3797d3om648s23', '54.196.42.8', '1534400150', '1534400150', '/catalog/product_info.php?name=AKA%20Domed%20Paddle%20560&products_id=537')

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