Mongo入门 - 基本使用：安装和CRUD

arcstack约 2656 字大约 9 分钟

Mongo入门 - 基本使用：安装和CRUD

在理解MongoDB基础概念后，本文将介绍MongoDB的安装和最基本的CURD操作。@pdai

Mongo入门 - 基本使用：安装和CRUD
MongoDB安装
一些参考文档
以Linux为例安装
连接和建库
CRUD操作
Insert
Query
Update
Delete
BulkWrite
参考文档

MongoDB安装

MongoDB的安装比较简单，这里主要给出官方的下载地址，以及官方安装文档的地址，方便大家直达。

一些参考文档

官网下载

官网下载在新窗口打开open in new window

官网文档

官网文档在新窗口打开open in new window

菜鸟教程中安装

菜鸟教程在新窗口打开open in new window

以Linux为例安装

yum源

创建文件/etc/yum.repos.d/mongodb-org-3.6.repo, 加yum源：

    [mongodb-org-3.6]
    name=MongoDB Repository
    baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.6/x86_64/
    gpgcheck=1
    enabled=1
    gpgkey=https://www.mongodb.org/static/pgp/server-3.6.asc

安装

    sudo yum install -y mongodb-org

运行

    [root@pdai yum.repos.d]# systemctl start mongod
    [root@pdai yum.repos.d]# sudo systemctl status mongod
    ● mongod.service - MongoDB Database Server
       Loaded: loaded (/usr/lib/systemd/system/mongod.service; enabled; vendor preset: disabled)
       Active: active (running) since Tue 2020-07-28 09:59:55 CST; 26s ago
         Docs: https://docs.mongodb.org/manual
      Process: 8868 ExecStart=/usr/bin/mongod $OPTIONS (code=exited, status=0/SUCCESS)
      Process: 8865 ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb (code=exited, status=0/SUCCESS)
      Process: 8863 ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb (code=exited, status=0/SUCCESS)
      Process: 8862 ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb (code=exited, status=0/SUCCESS)
     Main PID: 8872 (mongod)
       CGroup: /system.slice/mongod.service
               └─8872 /usr/bin/mongod -f /etc/mongod.conf

连接和建库

连接

    [root@pdai yum.repos.d]# mongo --host 127.0.0.1:27017
    MongoDB shell version v3.6.19
    connecting to: mongodb://127.0.0.1:27017/?gssapiServiceName=mongodb
    Implicit session: session { "id" : UUID("cb27e5a9-600f-4f57-9096-c7348a9ae5f9") }
    MongoDB server version: 3.6.19
    Welcome to the MongoDB shell.
    For interactive help, type "help".
    For more comprehensive documentation, see
            http://docs.mongodb.org/
    Questions? Try the support group
            http://groups.google.com/group/mongodb-user
    Server has startup warnings:
    2020-07-28T09:59:54.521+0800 I STORAGE  [initandlisten]
    2020-07-28T09:59:54.521+0800 I STORAGE  [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
    2020-07-28T09:59:54.521+0800 I STORAGE  [initandlisten] **          See http://dochub.mongodb.org/core/prodnotes-filesystem
    2020-07-28T09:59:55.705+0800 I CONTROL  [initandlisten]
    2020-07-28T09:59:55.705+0800 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
    2020-07-28T09:59:55.705+0800 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.
    2020-07-28T09:59:55.705+0800 I CONTROL  [initandlisten]
    2020-07-28T09:59:55.705+0800 I CONTROL  [initandlisten]
    2020-07-28T09:59:55.705+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
    2020-07-28T09:59:55.705+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
    2020-07-28T09:59:55.705+0800 I CONTROL  [initandlisten]
    2020-07-28T09:59:55.705+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
    2020-07-28T09:59:55.705+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
    2020-07-28T09:59:55.705+0800 I CONTROL  [initandlisten]
    > show dbs;
    admin   0.000GB
    config  0.000GB
    local   0.000GB

建库

    > use testdb;
    switched to db testdb

CRUD操作

官方CRUD文档在新窗口打开open in new window

Insert

图例

示例

    > db.inventory.insertOne(
    ...    { item: "canvas", qty: 100, tags: ["cotton"], size: { h: 28, w: 35.5, uom: "cm" } }
    ... )
    {
            "acknowledged" : true,
            "insertedId" : ObjectId("5f1f8a9a099483199e74737c")
    }
    > db.inventory.insertMany([
    ...    { item: "journal", qty: 25, tags: ["blank", "red"], size: { h: 14, w: 21, uom: "cm" } },
    ...    { item: "mat", qty: 85, tags: ["gray"], size: { h: 27.9, w: 35.5, uom: "cm" } },
    ...    { item: "mousepad", qty: 25, tags: ["gel", "blue"], size: { h: 19, w: 22.85, uom: "cm" } }
    ... ])
    {
            "acknowledged" : true,
            "insertedIds" : [
                    ObjectId("5f1f8aa8099483199e74737d"),
                    ObjectId("5f1f8aa8099483199e74737e"),
                    ObjectId("5f1f8aa8099483199e74737f")
            ]
    }
    > db.inventory.find( {} )
    { "_id" : ObjectId("5f1f8a9a099483199e74737c"), "item" : "canvas", "qty" : 100, "tags" : [ "cotton" ], "size" : { "h" : 28, "w" : 35.5, "uom" : "cm" } }
    { "_id" : ObjectId("5f1f8aa8099483199e74737d"), "item" : "journal", "qty" : 25, "tags" : [ "blank", "red" ], "size" : { "h" : 14, "w" : 21, "uom" : "cm" } }
    { "_id" : ObjectId("5f1f8aa8099483199e74737e"), "item" : "mat", "qty" : 85, "tags" : [ "gray" ], "size" : { "h" : 27.9, "w" : 35.5, "uom" : "cm" } }
    { "_id" : ObjectId("5f1f8aa8099483199e74737f"), "item" : "mousepad", "qty" : 25, "tags" : [ "gel", "blue" ], "size" : { "h" : 19, "w" : 22.85, "uom" : "cm" } }
    >

更多文档资料

官方相关文档在新窗口打开open in new window

Query

图例

示例

    > db.inventory.find( {} )
    { "_id" : ObjectId("5f1f8a9a099483199e74737c"), "item" : "canvas", "qty" : 100, "tags" : [ "cotton" ], "size" : { "h" : 28, "w" : 35.5, "uom" : "cm" } }
    { "_id" : ObjectId("5f1f8aa8099483199e74737d"), "item" : "journal", "qty" : 25, "tags" : [ "blank", "red" ], "size" : { "h" : 14, "w" : 21, "uom" : "cm" } }
    { "_id" : ObjectId("5f1f8aa8099483199e74737e"), "item" : "mat", "qty" : 85, "tags" : [ "gray" ], "size" : { "h" : 27.9, "w" : 35.5, "uom" : "cm" } }
    { "_id" : ObjectId("5f1f8aa8099483199e74737f"), "item" : "mousepad", "qty" : 25, "tags" : [ "gel", "blue" ], "size" : { "h" : 19, "w" : 22.85, "uom" : "cm" } }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a78"), "item" : "journal", "qty" : 25, "size" : { "h" : 14, "w" : 21, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a79"), "item" : "notebook", "qty" : 50, "size" : { "h" : 8.5, "w" : 11, "uom" : "in" }, "status" : "A" }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a7a"), "item" : "paper", "qty" : 100, "size" : { "h" : 8.5, "w" : 11, "uom" : "in" }, "status" : "D" }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a7b"), "item" : "planner", "qty" : 75, "size" : { "h" : 22.85, "w" : 30, "uom" : "cm" }, "status" : "D" }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a7c"), "item" : "postcard", "qty" : 45, "size" : { "h" : 10, "w" : 15.25, "uom" : "cm" }, "status" : "A" }
    > db.inventory.find( { status: "D" } )
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a7a"), "item" : "paper", "qty" : 100, "size" : { "h" : 8.5, "w" : 11, "uom" : "in" }, "status" : "D" }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a7b"), "item" : "planner", "qty" : 75, "size" : { "h" : 22.85, "w" : 30, "uom" : "cm" }, "status" : "D" }
    > db.inventory.find( { status: { $in: [ "A", "D" ] } } )
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a78"), "item" : "journal", "qty" : 25, "size" : { "h" : 14, "w" : 21, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a79"), "item" : "notebook", "qty" : 50, "size" : { "h" : 8.5, "w" : 11, "uom" : "in" }, "status" : "A" }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a7a"), "item" : "paper", "qty" : 100, "size" : { "h" : 8.5, "w" : 11, "uom" : "in" }, "status" : "D" }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a7b"), "item" : "planner", "qty" : 75, "size" : { "h" : 22.85, "w" : 30, "uom" : "cm" }, "status" : "D" }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a7c"), "item" : "postcard", "qty" : 45, "size" : { "h" : 10, "w" : 15.25, "uom" : "cm" }, "status" : "A" }
    > db.inventory.find( { status: "A", qty: { $lt: 30 } } )
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a78"), "item" : "journal", "qty" : 25, "size" : { "h" : 14, "w" : 21, "uom" : "cm" }, "status" : "A" }
    > db.inventory.find( { $or: [ { status: "A" }, { qty: { $lt: 30 } } ] } )
    { "_id" : ObjectId("5f1f8aa8099483199e74737d"), "item" : "journal", "qty" : 25, "tags" : [ "blank", "red" ], "size" : { "h" : 14, "w" : 21, "uom" : "cm" } }
    { "_id" : ObjectId("5f1f8aa8099483199e74737f"), "item" : "mousepad", "qty" : 25, "tags" : [ "gel", "blue" ], "size" : { "h" : 19, "w" : 22.85, "uom" : "cm" } }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a78"), "item" : "journal", "qty" : 25, "size" : { "h" : 14, "w" : 21, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a79"), "item" : "notebook", "qty" : 50, "size" : { "h" : 8.5, "w" : 11, "uom" : "in" }, "status" : "A" }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a7c"), "item" : "postcard", "qty" : 45, "size" : { "h" : 10, "w" : 15.25, "uom" : "cm" }, "status" : "A" }
    > db.inventory.find( {
    ...      status: "A",
    ...      $or: [ { qty: { $lt: 30 } }, { item: /^p/ } ]
    ... } )
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a78"), "item" : "journal", "qty" : 25, "size" : { "h" : 14, "w" : 21, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f94de4326f1d6a51d3a7c"), "item" : "postcard", "qty" : 45, "size" : { "h" : 10, "w" : 15.25, "uom" : "cm" }, "status" : "A" }
    >

更多文档资料

官方相关文档在新窗口打开open in new window

官方相关示例 - find 在新窗口打开open in new window

Update

图例

示例

    > db.inventory.insertMany( [
    ...    { item: "canvas", qty: 100, size: { h: 28, w: 35.5, uom: "cm" }, status: "A" },
    ...    { item: "journal", qty: 25, size: { h: 14, w: 21, uom: "cm" }, status: "A" },
    ...    { item: "mat", qty: 85, size: { h: 27.9, w: 35.5, uom: "cm" }, status: "A" },
    ...    { item: "mousepad", qty: 25, size: { h: 19, w: 22.85, uom: "cm" }, status: "P" },
    ...    { item: "notebook", qty: 50, size: { h: 8.5, w: 11, uom: "in" }, status: "P" },
    ...    { item: "paper", qty: 100, size: { h: 8.5, w: 11, uom: "in" }, status: "D" },
    ...    { item: "planner", qty: 75, size: { h: 22.85, w: 30, uom: "cm" }, status: "D" },
    ...    { item: "postcard", qty: 45, size: { h: 10, w: 15.25, uom: "cm" }, status: "A" },
    ...    { item: "sketchbook", qty: 80, size: { h: 14, w: 21, uom: "cm" }, status: "A" },
    ...    { item: "sketch pad", qty: 95, size: { h: 22.85, w: 30.5, uom: "cm" }, status: "A" }
    ... ] );
    {
            "acknowledged" : true,
            "insertedIds" : [
                    ObjectId("5f1f96cf4326f1d6a51d3a7d"),
                    ObjectId("5f1f96cf4326f1d6a51d3a7e"),
                    ObjectId("5f1f96cf4326f1d6a51d3a7f"),
                    ObjectId("5f1f96cf4326f1d6a51d3a80"),
                    ObjectId("5f1f96cf4326f1d6a51d3a81"),
                    ObjectId("5f1f96cf4326f1d6a51d3a82"),
                    ObjectId("5f1f96cf4326f1d6a51d3a83"),
                    ObjectId("5f1f96cf4326f1d6a51d3a84"),
                    ObjectId("5f1f96cf4326f1d6a51d3a85"),
                    ObjectId("5f1f96cf4326f1d6a51d3a86")
            ]
    }
    > db.inventory.updateOne(
    ...    { item: "paper" },
    ...    {
    ...      $set: { "size.uom": "cm", status: "P" },
    ...      $currentDate: { lastModified: true }
    ...    }
    ... )
    { "acknowledged" : true, "matchedCount" : 1, "modifiedCount" : 1 }
    > db.inventory.find( {} )
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a7d"), "item" : "canvas", "qty" : 100, "size" : { "h" : 28, "w" : 35.5, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a7e"), "item" : "journal", "qty" : 25, "size" : { "h" : 14, "w" : 21, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a7f"), "item" : "mat", "qty" : 85, "size" : { "h" : 27.9, "w" : 35.5, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a80"), "item" : "mousepad", "qty" : 25, "size" : { "h" : 19, "w" : 22.85, "uom" : "cm" }, "status" : "P" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a81"), "item" : "notebook", "qty" : 50, "size" : { "h" : 8.5, "w" : 11, "uom" : "in" }, "status" : "P" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a82"), "item" : "paper", "qty" : 100, "size" : { "h" : 8.5, "w" : 11, "uom" : "cm" }, "status" : "P", "lastModified" : ISODate("2020-07-28T03:09:17.014Z") }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a83"), "item" : "planner", "qty" : 75, "size" : { "h" : 22.85, "w" : 30, "uom" : "cm" }, "status" : "D" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a84"), "item" : "postcard", "qty" : 45, "size" : { "h" : 10, "w" : 15.25, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a85"), "item" : "sketchbook", "qty" : 80, "size" : { "h" : 14, "w" : 21, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a86"), "item" : "sketch pad", "qty" : 95, "size" : { "h" : 22.85, "w" : 30.5, "uom" : "cm" }, "status" : "A" }

updateMany

    > db.inventory.updateMany(
    ...    { "qty": { $lt: 50 } },
    ...    {
    ...      $set: { "size.uom": "in", status: "P" },
    ...      $currentDate: { lastModified: true }
    ...    }
    ... )
    { "acknowledged" : true, "matchedCount" : 3, "modifiedCount" : 3 }
    > db.inventory.find( {} )
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a7d"), "item" : "canvas", "qty" : 100, "size" : { "h" : 28, "w" : 35.5, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a7e"), "item" : "journal", "qty" : 25, "size" : { "h" : 14, "w" : 21, "uom" : "in" }, "status" : "P", "lastModified" : ISODate("2020-07-28T04:33:50.391Z") }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a7f"), "item" : "mat", "qty" : 85, "size" : { "h" : 27.9, "w" : 35.5, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a80"), "item" : "mousepad", "qty" : 25, "size" : { "h" : 19, "w" : 22.85, "uom" : "in" }, "status" : "P", "lastModified" : ISODate("2020-07-28T04:33:50.391Z") }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a81"), "item" : "notebook", "qty" : 50, "size" : { "h" : 8.5, "w" : 11, "uom" : "in" }, "status" : "P" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a82"), "item" : "paper", "qty" : 100, "size" : { "h" : 8.5, "w" : 11, "uom" : "cm" }, "status" : "P", "lastModified" : ISODate("2020-07-28T03:09:17.014Z") }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a83"), "item" : "planner", "qty" : 75, "size" : { "h" : 22.85, "w" : 30, "uom" : "cm" }, "status" : "D" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a84"), "item" : "postcard", "qty" : 45, "size" : { "h" : 10, "w" : 15.25, "uom" : "in" }, "status" : "P", "lastModified" : ISODate("2020-07-28T04:33:50.392Z") }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a85"), "item" : "sketchbook", "qty" : 80, "size" : { "h" : 14, "w" : 21, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a86"), "item" : "sketch pad", "qty" : 95, "size" : { "h" : 22.85, "w" : 30.5, "uom" : "cm" }, "status" : "A" }
    >

replace one

    > db.inventory.replaceOne(
    ...    { item: "paper" },
    ...    { item: "paper", instock: [ { warehouse: "A", qty: 60 }, { warehouse: "B", qty: 40 } ] }
    ... )
    { "acknowledged" : true, "matchedCount" : 1, "modifiedCount" : 1 }
    > db.inventory.find( {} )
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a7d"), "item" : "canvas", "qty" : 100, "size" : { "h" : 28, "w" : 35.5, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a7e"), "item" : "journal", "qty" : 25, "size" : { "h" : 14, "w" : 21, "uom" : "in" }, "status" : "P", "lastModified" : ISODate("2020-07-28T04:33:50.391Z") }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a7f"), "item" : "mat", "qty" : 85, "size" : { "h" : 27.9, "w" : 35.5, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a80"), "item" : "mousepad", "qty" : 25, "size" : { "h" : 19, "w" : 22.85, "uom" : "in" }, "status" : "P", "lastModified" : ISODate("2020-07-28T04:33:50.391Z") }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a81"), "item" : "notebook", "qty" : 50, "size" : { "h" : 8.5, "w" : 11, "uom" : "in" }, "status" : "P" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a82"), "item" : "paper", "instock" : [ { "warehouse" : "A", "qty" : 60 }, { "warehouse" : "B", "qty" : 40 } ] }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a83"), "item" : "planner", "qty" : 75, "size" : { "h" : 22.85, "w" : 30, "uom" : "cm" }, "status" : "D" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a84"), "item" : "postcard", "qty" : 45, "size" : { "h" : 10, "w" : 15.25, "uom" : "in" }, "status" : "P", "lastModified" : ISODate("2020-07-28T04:33:50.392Z") }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a85"), "item" : "sketchbook", "qty" : 80, "size" : { "h" : 14, "w" : 21, "uom" : "cm" }, "status" : "A" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a86"), "item" : "sketch pad", "qty" : 95, "size" : { "h" : 22.85, "w" : 30.5, "uom" : "cm" }, "status" : "A" }
    >

更多文档资料

官方相关文档在新窗口打开open in new window

Delete

图例

示例

    > db.inventory.deleteMany({ status : "A" })
    { "acknowledged" : true, "deletedCount" : 4 }
    > db.inventory.find( {} )
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a7e"), "item" : "journal", "qty" : 25, "size" : { "h" : 14, "w" : 21, "uom" : "in" }, "status" : "P", "lastModified" : ISODate("2020-07-28T04:33:50.391Z") }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a80"), "item" : "mousepad", "qty" : 25, "size" : { "h" : 19, "w" : 22.85, "uom" : "in" }, "status" : "P", "lastModified" : ISODate("2020-07-28T04:33:50.391Z") }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a81"), "item" : "notebook", "qty" : 50, "size" : { "h" : 8.5, "w" : 11, "uom" : "in" }, "status" : "P" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a82"), "item" : "paper", "instock" : [ { "warehouse" : "A", "qty" : 60 }, { "warehouse" : "B", "qty" : 40 } ] }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a83"), "item" : "planner", "qty" : 75, "size" : { "h" : 22.85, "w" : 30, "uom" : "cm" }, "status" : "D" }
    { "_id" : ObjectId("5f1f96cf4326f1d6a51d3a84"), "item" : "postcard", "qty" : 45, "size" : { "h" : 10, "w" : 15.25, "uom" : "in" }, "status" : "P", "lastModified" : ISODate("2020-07-28T04:33:50.392Z") }

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BulkWrite

本质是就是将上述的操作批量化。

    try {
       db.characters.bulkWrite(
          [
             { insertOne :
                {
                   "document" :
                   {
                      "_id" : 4, "char" : "Dithras", "class" : "barbarian", "lvl" : 4
                   }
                }
             },
             { insertOne :
                {
                   "document" :
                   {
                      "_id" : 5, "char" : "Taeln", "class" : "fighter", "lvl" : 3
                   }
                }
             },
             { updateOne :
                {
                   "filter" : { "char" : "Eldon" },
                   "update" : { $set : { "status" : "Critical Injury" } }
                }
             },
             { deleteOne :
                { "filter" : { "char" : "Brisbane"} }
             },
             { replaceOne :
                {
                   "filter" : { "char" : "Meldane" },
                   "replacement" : { "char" : "Tanys", "class" : "oracle", "lvl" : 4 }
                }
             }
          ]
       );
    }
    catch (e) {
       print(e);
    }

参考文档

https://docs.mongodb.com/v3.6/tutorial

Mongo入门 - 基本使用：安装和CRUD

# Mongo入门 - 基本使用：安装和CRUD

# MongoDB安装

# 一些参考文档

# 以Linux为例安装

# 连接和建库

# CRUD操作

# Insert

# Query

# Update

# Delete

# BulkWrite

# 参考文档

Mongo入门 - 基本使用：安装和CRUD

MongoDB安装

一些参考文档

以Linux为例安装

连接和建库

CRUD操作

Insert

Query

Update

Delete

BulkWrite

参考文档