保留
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帝国CMS:一次性批量删除重复信息并保留一条的
第一步：先建立一个临时表 create table tmp as select min(id) as col1 from phome_ecms_表 group by title;
第一步：先建立一个临时表 create table tmp as select min(id) as col1 from phome_ecms_表 group by title;
