mongodb文档问题

论坛中讨论区的主题内容与回贴内容是分开collection存放，还是把回贴和评论作为内嵌文档存储。为什么这样做。我想主要是考虑查询性能的问题，但是我不确定怎么做更好。请各位达人指教。

请问下，我有个用户-》多个地址我目前把地址用内嵌文档放入用户collection，可是如果要修改地址，内嵌文档没有id怎么办？内嵌文档怎么实现自增id？

数据的格式是这样的:现在我想的是1,查询people_id 为 1 且 privilege 为 5的内嵌文档,mongodb的查询命令怎么写的啊2,更新people_id 为 2 且权限为 id为2的内嵌文档的name字段值为 6,更新命令怎么写的啊查询我用db.find({"people_id":1,...

java实现mongodb 内嵌文档查询的问题

在mongodb中文档是这样存储的：`{"_id":{"$oid":"564d2c9de5c3633ae138fbd4"},"member_key":"7_1","url":"http://www.lagou.com/gongsi/7.html" ,"content":{"position":"创始人兼CTO","member_desc":"资深程序员，XTools构架师。...

mongodb 文档数组查询的一个问题

对多群发消息，文档结构如下：{"from_uid":10000,"to_uid":[{"user_id":100002,"is_read":1,"is_del":1 },{"user_id":100003,"is_read":0,"is_del":0 },{"user_id":100004,"is_read":1,"is_del":0 }]} 其中to_uid.user_id=100002,设置为is_...

MongoDB 获取文档属性遇到的一个问题

为什么第二种方法不成功，是不是x.fieldName语句，这个fieldName只能指定死，不能根据动态传入的值来获取对应的field。

mongodb子文档排序的问题

上面是众多结果当中的2个。我现在的需求是从所有结果当中找到gid=02569的，并且按照对应的date进行DESC排序

关于 Mongodb 根据子文档的某个特定字段排序问题

1*/{"_id":ObjectId("55e542cd7f8b9aca2b8b4568"),"game_id":1103,"tags":[{"tag_id":10,"name":"西游","rank":10,},{"tag_id":123,"name":"网游","rank":1,},],"time_sort":1435306 }/*2*/{"_id":ObjectId("55dd8fe67f8b9a25528b64f7"),...

mongodb 子文档批量更新不完全的问题

角色扮演"}]} 运行批量更新语句：db.getCollection('xxxxx').update({'games.typename':'角色扮演'},{'$set':{'games.$.typename':'角色'}},0,1)结果发现批量更新不完整，结果如下：{"_id":ObjectId("55dc1454f754a3342000002c"),"title":...

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云数据库 MongoDB 版

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