2014年4月8日
MongoDB 聚合运算group及map reduce
摘要： 1.db.collection.group arice:PRIMARY> db.t.find(){"_id":ObjectId("51244a9e181fee7a28391f2a"),"hours":"8","ts":ISODate("2012-01-08T16:00:00Z"),"name":"ccj"}{"_id":ObjectId("51244afa181fee7a28391f2b") 阅读全文
posted @ 2014-04-08 10:19 SCHUMI_LDS 阅读(668) 评论(0) 推荐(0)