更新時(shí)間：2025-05-15 01:59:21
開發(fā)經(jīng)驗(yàn)
5321.復(fù)制tags字段內(nèi)容到keyboard，當(dāng)keyboard為空的時(shí)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字段內(nèi)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（相關(guān)鏈接）字段為空，說明keyboard設(shè)置不合理，干脆清空，為自動(dòng)分詞掃清障礙
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，提取第一張圖片為標(biāo)題圖片。當(dāng)標(biāo)題圖片為空的時(shí)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;
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