Hmm, can you list the invoice numbers which are created before 1989-09-03 or after 2007-12-25?
SELECT invoice_number FROM invoices WHERE invoice_date < "1989-09-03" OR invoice_date > "2007-12-25"
created before 1989-09-03 refers to invoice_date < \"1989-09-03\"; created after 2007-12-25 refers to invoice_date > \"2007-12-25\"; list the invoice numbers refers to SELECT invoice_number;