批量设置附件价格，在网上查一下，发现下面这个语法是能用的，但是把图片都包括在里了，图片作为展示不能设置价格，怎么把图片格式的不设置价格呢?谢谢！
UPDATE`pre_forum_attachment_0`SET price = 0  WHERE1 ;UPDATE`pre_forum_attachment_1`SET price = 0  WHERE1 ;UPDATE`pre_forum_attachment_2`SET price = 0  WHERE1 ;UPDATE`pre_forum_attachment_3`SET price = 0  WHERE1 ;UPDATE`pre_forum_attachment_4`SET price = 0  WHERE1 ;UPDATE`pre_forum_attachment_5`SET price = 0  WHERE1 ;UPDATE`pre_forum_attachment_6`SET price = 0  WHERE1 ;UPDATE`pre_forum_attachment_7`SET price = 0  WHERE1 ;UPDATE`pre_forum_attachment_8`SET price = 0  WHERE1 ;UPDATE`pre_forum_attachment_9`SET price = 0  WHERE1 ;