The Big Data Way

show dbsshow collectionsuse {database}db.company.insert({"name":"A", age:27})db.company.find()dbdb.{collection}.drop() #创建数据库先use {new_DB}，然后insert data就可以了 # 删除DBuse ccdb.dr...

配置服务mongod --dbpath ~/dbs/config1/ --port 20001 --fork --logpath /tmp/mongodb/config.log --logappend 路由服务mongos --configdb 192.168.0.5:20001 --port 54321 --fork --logpath /tmp/mongodb/rou...

无法重启数据库，错误信息如下：**************old lock file: /data/db/mongod.lock. probably means unclean shutdownrecommend removing file and running --repairsee: http://dochub.mongodb.org/core/repair for...

插入数据： db.test.insert({name:'zs', count:5})db.test.insert({name:'zs', count:6})db.test.insert({name:'zs', count:7})db.test.insert({name:'ls', count:7})db.test.insert({name:'ls', count:2})   按...

默认索引系统会默认为id字段添加索引 创建索引：// 在集合"people"的"name"字段创建升序索引（降序值为"-1"）db.people.ensureIndex({"name" : 1}) 复合索引db.people.ensureIndex({"name" : 1, "address" : 1}) 唯一索引 查看索引： db.