帝国cms灵动标签联合查询自定义扩展变量

灵动标签联合查询(自定义扩展变量) [e:loop={"select * from [!db.pre!]enewsclass as a inner join [!db.pre!]ecms_news as b on a.classid=b.classid and a.bclassid=1 o