
多表查询
多表查询资料_多表查询简介_多表查询大全多表查询列表
帝国cms 自定义列表多表查询方法 统计记录: select count(*) as total from [!db.pre!]ecms_newsunion select count(*) as total from [!db.pre!]ecms_book 查询记录: select classid,id,titleurl,title,newstime from [!db.pre!]ecms_news union select clas
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