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MongoDB 数据插入


描述

本章节中我们将向大家介绍如何将数据插入到MongoDB的集合中。

文档的数据结构和JSON基本一样。

所有存储在集合中的数据都是BSON格式。

BSON是一种类json的一种二进制形式的存储格式,简称Binary JSON


MongoDB数据库切换

以下命令可以使用"myinfo"数据库:

> use myinfo switch to db myinfo

mongo-switch-db


为MongoDB数据库定义一个文档

以下文档可以存储在MongoDB中:

> document=({"user_id" : "ABCDBWN","password" :"ABCDBWN" ,"date_of_join" :
"15/10/2010" ,"education" :"B.C.A." , "profession" : "DEVELOPER","interest" :
"MUSIC","community_name" :["MODERN MUSIC", "CLASSICAL
MUSIC","WESTERN MUSIC"],"community_moder_id" : ["MR. BBB","MR. JJJ","MR
MMM"],"community_members" : [500,200,1500],"friends_id" :
["MMM123","NNN123","OOO123"],"ban_friends_id" :
["BAN123","BAN456","BAN789"]});

命令执行如下图所示:

mongodb-insert-command


显示已定义的文档

已定义的文档显示格式如下所示:

mongodb-insert1


在集合中插入文档

将以上的文档数据存储到"myinfo" 数据库中的 "userdetails" 集合,执行如下命令:

> db.userdetails.insert(document)

mongodb-insert3


使用换行符插入数据

当文档的数据较多的时候,我们可以使用换行符来分割文档数据,如下所示:

>document=({"user_id" : "ABCDBWN","password" :"ABCDBWN" ,"date_of_join" : "15/10/2010" ,
"education" :"B.C.A." , "profession" : "DEVELOPER","interest" : "MUSIC",
"community_name" :["MODERN MUSIC", "CLASSICAL MUSIC","WESTERN MUSIC"],
"community_moder_id" : ["MR. BBB","MR. JJJ","MR MMM"],
"community_members" : [500,200,1500],"friends_id" : ["MMM123","NNN123","OOO123"],
"ban_friends_id" :["BAN123","BAN456","BAN789"]});

命令执行如下图所示:

mongodb-insert2


集合中直接插入数据(无定义文档)

数据可以不用定义文档通过shell直接插入:

>db.userdetails.insert({"user_id" : "xyz123","password" :"xyz123" ,"date_of_join" : "15/08/2010" ,
"education" :"M.C.A." , "profession" : "Software consultant","interest" : "Film",
"community" : [
{
"name" : "DDD FILM CLUB",
"moder_id" : "MR. DBNA",
"members" : "25000",
},
{
"name" : "AXN MOVIES",
"moder_id" : "DOGLUS HUNT",
"members" : "15000",
},
{
"name" : "UROPEAN FILM LOVERS",
"moder_id" : "AMANT LUIS",
"members" : "20000",
}
],
"friends" :[
{
"user_id" : "KKK258",
},
{
"user_id" : "LLL147",
},
{
"user_id" : "MMM369",
}
],
"ban_friends" :[
{
"user_id" : "BAN147"
},
{
"user_id" : "BAN258"
},
{
"user_id" : "BAN369"
}
]
});

命令执行如下图所示:

insert-data-into-a-collection-without-defining-a-document


查看集合中的数据

使用以下命令查看集合中的数据:

>db.userdetails.find();

view-the-inserted-data-into-the-collection