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;
