帝国CMS模版中批量提取新闻正文内容的第一张图片作为标题缩略图的SQL语句
请 先备份数据库！文本存放的新闻正文字段不可用！
新闻正文字段作为主表的情况用以下语句：
update phome_ecms_news set titlepic =concat(replace(SUBSTRING_INDEX(SUBSTRING_INDEX(newstext, 'src=', -1),'.gif',1),'',''),'.gif') where newstext like '%.gif%' and titlepic='';
update phome_ecms_news set titlepic =concat(replace(SUBSTRING_INDEX(SUBSTRING_INDEX(newstext, 'src=', -1),'.jpg',1),'',''),'.gif') where newstext like '%.jpg%' and titlepic='';
update phome_ecms_news set titlepic =concat(replace(SUBSTRING_INDEX(SUBSTRING_INDEX(newstext, 'src=', -1),'.png',1),'',''),'.png') where newstext like '%.png%' and titlepic='';
新闻正文字段作为副表的情况用以下语句：
update [!db.pre!]ecms_news_data_1 a, [!db.pre!]ecms_news b set b.titlepic=concat(replace(SUBSTRING_INDEX(SUBSTRING_INDEX(a.newstext, 'src=', -1),'.gif',1),'',''),'.gif') where a.newstext like '%.gif%' and b.titlepic='' and a.id=b.id;
update [!db.pre!]ecms_news_data_1 a, [!db.pre!]ecms_news b set b.titlepic=concat(replace(SUBSTRING_INDEX(SUBSTRING_INDEX(a.newstext, 'src=', -1),'.jpg',1),'',''),'.jpg') where a.newstext like '%.jpg%' and b.titlepic='' and a.id=b.id;
update [!db.pre!]ecms_news_data_1 a, [!db.pre!]ecms_news b set b.titlepic=concat(replace(SUBSTRING_INDEX(SUBSTRING_INDEX(a.newstext, 'src=', -1),'.png',1),'',''),'.png') where a.newstext like '%.png%' and b.titlepic='' and a.id=b.id;
