insert into nss_item(it_id,it_name,it_amount,it_stock_qty,it_explan) values('1745098527','[도서구입] (48)산골 풍경2-이명우 시집','','99999','')

1062 : Duplicate entry '1745098527' for key 1

error file : /home/klw/book_buy.php