摘要:
1.假如userinfo有如下两条文档{ "_id" : 1, "name" : "ly", "friends" : [ { "name" : "mxw", "age" : 25 }, { "name" : "cpp", "age" : 21 } ] }{ "_id" : 2, "name" : "wq", "friends&q 阅读全文
posted @ 2011-10-26 11:19
再快一点
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