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1.復制tags字段內容到keyboard，當keyboard為空的時候：

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（相關鏈接）字段為空，說明keyboard設置不合理，干脆清空，為自動分詞掃清障礙

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題圖片。當標題圖片為空的時候。

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;