帝国cms常用的SQL语句
短视频,自媒体,达人种草一站服务 1.复制tags字段内容到keyboard,当keyboard为空的时候: update [!db.pre!]ecms_news_data_1 a, [!db.pre!]ecms_news b set b.keyboard=a.infotags where a.id=b.id and b.keyboard=''; 2.添加tags字段内容到keyboard: update [!db.pre!]ecms_news_data_1 a, [!db.pre!]ecms_news b set b.keyboard=concat(b.keyboard,',',a.infotags) where a.id=b.id and b.keyboard<>'' and a.infotags<>''; 3.如果副表中keyid(相关链接)字段为空,说明keyboard设置不合理,干脆清空,为自动分词扫清障碍 update [!db.pre!]ecms_news_data_1 a, [!db.pre!]ecms_news b set b.keyboard='' where a.id=b.id and a.keyid='' 4.newstext在副表,提取第一张图片为标题图片。当标题图片为空的时候。 update [!db.pre!]ecms_news_data_1 a, [!db.pre!]ecms_news b set b.titlepic=concat(replace(SUBSTRING_INDEX(SUBSTRING_INDEX(a.newstext, '.jpg', 1),'src=',-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, '.gif', 1),'src=',-1),'"',''),'.gif') where a.newstext like '%.gif%' and b.titlepic='' and a.id=b.id; (编辑:广州站长网) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |