insert into nss_item(it_id,it_name,it_amount,it_stock_qty,it_explan) values('1745091665','[도서구입] 계간지 한국문학세상 겨울호(2)','','99999','')

1062 : Duplicate entry '1745091665' for key 1

error file : /home/klw/book_buy.php