帝国CMS批量提取新闻正文内容第一张图片作为标题默认缩略图的方法!(SQL语句) 帝国CMS怎么批量提取新闻内容里面的第一张图片作为标题默认缩略图呢?其实方法也很简单,我们通过SQL语句就可以实现,下面帝国cms模板网就来告诉大家怎么操作: 执行以下脚本的时候请 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; 好了,到这里就完成了!
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