insert into nss_item(it_id,it_name,it_amount,it_stock_qty,it_explan) values('1745025886','[도서구입] (30) 김신_마흔 그 살아야 하는 이유(김신)','','99999','')

1062 : Duplicate entry '1745025886' for key 1

error file : /home/klw/book_buy.php