假设我的 CouchDB 数据库中有这样的博客条目：
{"name":"Mary", "postdate":"20110412", "subject":"this", "message":"blah"}
{"name":"Joe", "postdate":"20110411", "subject":"that", "message":"yadda"}
{"name":"Mary", "postdate":"20110411", "subject":"and this", "message":"blah-blah"}
{"name":"Joe", "postdate":"20110410", "subject":"and other thing", "message":"yada-yada"}
{"name":"Jane", "postdate":"20110409", "subject":"严肃的东西", "message":"不是真的"}
获取所有帖子的列表非常容易。但是如何从所有用户那里获得最新帖子的列表？
像那样：
{"name":"Mary", "postdate":"20110412", "subject":"this", "message":"blah"}
{"name":"Joe", "postdate":"20110411", "subject":"that", "message":"yadda"}
{"name":"Jane", "postdate":"20110409", "subject":"严肃的东西", "message":"不是真的"}