mongoDB入门

mongodb学习

启动
./mongod --dbpath /home/chen1234/mongodb/local/mongodb/bin/data/db --logpath ./mongod --logpath /home/chen1234/mongodb/local/mongodb/bin/log/mongod.log --fork


增加
db.person.insert({_id:3,name:'hanmaimei',hobby:['basketball','football'],intro:{title:'my love boy',content:'we are love boy very much'}})


查询

#不等于
db.person.find({_id:{$ne:3},name:'chenguming'})

#in
db.person.find({name:{$in:['zhangsan','chenguming']}})

#既不是也不是 且只显示名字
db.person.find({$nor:[{name:'chenguming'},{name:'zhangsan'}]},{name:1})

#求模 _id/3==0的数据拿出来

db.person.find({_id:{$mod:[3,0]}},{name:1})

#正则匹配

db.person.find({name:{$regex:'\^chen\*'}})