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', '3r9rhm1taqqg1med0gb37au884', '54.80.96.153', '1537787840', '1537787840', '/catalog/product_info.php?products_id=528&osCsid=rbh0s4neo966nhku2a7st2nlp4')

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