;查询的价格变化。(如果我将"while“循环计算在内)。另外,我可以在不这样做的情况下达到代码的效果吗?$result2 = mysql_query("SELECT * FROM ceny WHERE produkt_id='$id' ORDER BY gramaz");
$result3 = mysql_query("SELECT * FROM ceny WHERE produkt_<em
结果应该是:| id | order || 6c1e1f12 | 0 |SELECT IF(@prev != a.id, @curr := 0, @curr := @curr + 1) AS order, @prev := a.id AS item_id
FROM (SELECT id FROM orde