MongoDB入门

时间:2023-03-09 07:35:27
MongoDB入门

安装

安装MongoDB

  1. 从官网下载

    MongoDB入门

  2. 安装

    MongoDB入门

  3. 测试连接

    MongoDB入门

    MongoDB入门

  4. 启用

    MongoDB入门

安装MongoDB Windows服务

> d:\mongodb\bin>mongod --dbpath "d:\mongodb\data\db" --logpath "d:\mongodb\data\log\MongoDB.log" --install --serviceName "MongoDB"

注:必须有管理员权限

数据库操作

  1. 显示所示数据库
    1. show dbs

      MongoDB入门

  2. (创建)切换数据库
    1. use test

      MongoDB入门

  3. 显示当前数据库的所有集合
    1. show collections

      MongoDB入门

  4. 删除数据库
    1. use newDB
    2. db.dropDatabase()

      MongoDB入门

集合查询

条件查询

  • db.collection.find({ "key" : value })    查找key=value的数据
  • db.collection.find({ "key" : { $gt: value } })    key > value
  • db.collection.find({ "key" : { $lt: value } })    key < value
  • db.collection.find({ "key" : { $gte: value } })    key >= value
  • db.collection.find({ "key" : { $lte: value } })    key <= value
  • db.collection.find({ "key" : { $gt: value1 , $lt: value2 } })    value1 < key <value2
  • db.collection.find({ "key" : { $ne: value } })    key <> value
  • db.collection.find({ "key" : { $mod : [ 10 , 1 ] } })    取模运算,条件相当于key % 10 == 1 即key除以10余数为1的
  • db.collection.find({ "key" : { $nin: [ 1, 2, 3 ] } })    不属于,条件相当于key的值不属于[ 1, 2, 3 ]中任何一个
  • db.collection.find({ "key" : { $in: [ 1, 2, 3 ] } })    属于,条件相当于key等于[ 1, 2, 3 ]中任何一个
  • db.collection.find({ "key" : { $size: 1 } })    $size 数量、尺寸,条件相当于key的值的数量是1(key必须是数组,一个值的情况不能算是数量为1的数组)
  • db.collection.find({ "key" : { $exists : true|false } })    $exists 字段存在,true返回存在字段key的数据,false返回不存在字度key的数据
  • db.collection.find({ "key": /^val.*val$/i })    正则,类似like;"i"忽略大小写,"m"支持多行
  • db.collection.find({ $or : [{a : 1}, {b : 2} ] })    $or或 (注意:MongoDB 1.5.3后版本可用),符合条件a=1的或者符合条件b=2的数据都会查询出来
  • db.collection.find({ "key": value , $or : [{ a : 1 } , { b : 2 }] })    符合条件key=value ,同时符合其他两个条件中任意一个的数据
  • db.collection.find({ "key.subkey" :value })    内嵌对象中的值匹配,注意:"key.subkey"必须加引号
  • db.collection.find({ "key": { $not : /^val.*val$/i } })   这是一个与其他查询条件组合使用的操作符,不会单独使用。上述查询条件得到的结果集加上$not之后就能获得相反的集合。

排序

  • db.collection.find().sort({ "key1" : -1 ,"key2" : 1 })    这里的1代表升序,-1代表降序

其它

  • db.collection.find().limit(5)    控制返回结果数量,如果参数是0,则当作没有约束,limit()将不起作用
  • db.collection.find().skip(5)    控制返回结果跳过多少数量,如果参数是0,则当作没有约束,skip()将不起作用,或者说跳过了0条
  • db.collection.find().skip(5).limit(5)    可用来做分页,跳过5条数据再取5条数据
  • db.collection.find().count(true)    count()返回结果集的条数
  • db.collection.find().skip(5).limit(5).count(true)    在加入skip()和limit()这两个操作时,要获得实际返回的结果数,需要一个参数true,否则返回的是符合查询条件的结果总数

集合修改

  1. 新增集合

    db.createCollection

    MongoDB入门

    MongoDB入门

  2. 修改集合(增量修改,特别要注意,以免覆盖原数据)

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" alt="" />
  3. 删除集合指定数据

    db.Book.remove({name:'Alice'})
  4. 清空集合

    db.Book.remove()
  5. 删除集合

    db.Book.drop()

帮助

  1. 数据库的帮助
    1. db.help()

      MongoDB入门

  2. 集合的帮助
    1. db.foo.help()

      MongoDB入门