{"id":390,"date":"2022-03-29T17:59:12","date_gmt":"2022-03-29T09:59:12","guid":{"rendered":"http:\/\/gjweb.top\/?p=390"},"modified":"2022-03-29T18:00:56","modified_gmt":"2022-03-29T10:00:56","slug":"mongo%e8%af%ad%e6%b3%95","status":"publish","type":"post","link":"https:\/\/gjweb.top\/?p=390","title":{"rendered":"Mongo\u8bed\u6cd5"},"content":{"rendered":"\n

\u6570\u636e\u5e93\u6982\u5ff5\u5bf9\u6bd4<\/h2>\n\n\n\n
SQL<\/th>Mongo<\/th><\/tr><\/thead>
\u8868\uff08Table\uff09<\/td>\u96c6\u5408 \uff08collection\uff09<\/td><\/tr>
\u884c \uff08Row\uff09<\/td>\u6587\u6863 \uff08Document\uff09<\/td><\/tr>
\u5217 \uff08Col\uff09<\/td>\u5b57\u6bb5 \uff08Field\uff09<\/td><\/tr>
\u4e3b\u952e \uff08primary Key\uff09<\/td>\u5bf9\u8c61ID \uff08ObjectId\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u6570\u636e\u5e93\u64cd\u4f5c<\/h2>\n\n\n\n
\u521b\u5efa\u6570\u636e\u5e93<\/th>use demo<\/th><\/tr><\/thead>
\u67e5\u770b\u6570\u636e\u5e93<\/td>show dbs<\/td><\/tr>
\u5220\u9664\u6570\u636e\u5e93<\/td>db.dropDatabase()<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u96c6\u5408\u64cd\u4f5c<\/h2>\n\n\n\n
\u521b\u5efa\u96c6\u5408<\/th>db.createCollection(name)<\/th><\/tr><\/thead>
\u67e5\u770b\u96c6\u5408<\/td>show collections<\/td><\/tr>
\u5220\u9664\u96c6\u5408<\/td>db.collection.drop()<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u6587\u6863\u64cd\u4f5c<\/h2>\n\n\n\n
\u521b\u5efa\u6587\u6863<\/th>db.collection.insertOne({}) db.collection.insertMany({})<\/th><\/tr><\/thead>
\u67e5\u770b\u6587\u6863<\/td>db.collections.find({}) db.collections.findOne({})<\/td><\/tr>
\u5220\u9664\u6587\u6863<\/td>db.collection.deleteOne() db.collection.deleteMany()<\/td><\/tr>
\u66f4\u65b0\u6587\u6863<\/td>db.collection.update({],{},false,true})<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u6761\u4ef6\u64cd\u4f5c<\/h2>\n\n\n\n
\u5927\u4e8e<\/th>$gt<\/th><\/tr><\/thead>
\u5c0f\u4e8e<\/td>$lt<\/td><\/tr>
\u5927\u4e8e\u7b49\u4e8e<\/td>$gte<\/td><\/tr>
\u5c0f\u4e8e\u7b49\u4e8e<\/td>$lte<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\n

\u8fd4\u56de\u6570\u636e\u5e93\u6307\u5b9a\u7684\u5b57\u6bb5<\/h2>\n\n\n\n
\/\/ \u65b9\u5f0f\u4e00
const response =  \u96c6\u5408\u540d\u79f0.findOne({
    \u67e5\u8be2\u7684\u5b57\u6bb5:\u67e5\u8be2\u7684\u53c2\u6570,
    ...
},'\u8fd4\u56de\u7684\u5b57\u6bb51 \u5b57\u6bb52 \u5b57\u6bb53 ...')
    
\/\/ \u65b9\u5f0f\u4e8c
\/**
* \u901a\u8fc7json\u65b9\u5f0f 1\u662f\u8fd4\u56de 0\u662f\u4e0d\u8fd4\u56de
*\/
const response =  \u96c6\u5408\u540d\u79f0.findOne({
    \u67e5\u8be2\u7684\u5b57\u6bb5:\u67e5\u8be2\u7684\u53c2\u6570,
    ...
},{key1:1,key2:1,...})
\u200b
 \/\/ \u65b9\u5f0f\u4e09
 \/*
 * \u901a\u8fc7 select(\"key\")
 *\/
  const response = \u96c6\u5408\u540d\u79f0.findOne({
     \u67e5\u8be2\u7684\u5b57\u6bb5\uff1a\u67e5\u8be2\u7684\u53c2\u6570,
     ...
  }).select('key','key')<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u6279\u91cf\u66f4\u65b0\u6570\u636e\u6280\u5de7<\/h2>\n\n\n\n
\/\/ \u65b9\u5f0f\u4e00
\/*
* \u8fd9\u91cc\u7684User\u662f\u5b9a\u4e49\u597d\u7684\u6570\u636e\u6a21\u578b
*\/
const User = require('.\/..\/models\/userSchema')
const res =  User.updateMany({ $or: [{ userId: 10001 }, { userId: 10002 }] },{state:2})
\/*
* \u8868\u793a\u5c06userId 10001,10002\u6570\u636e\u4e2d\u7684 state \u6539\u4e3a 2
*\/
\u200b
\/\/ \u65b9\u5f0f\u4e8c
const User = require('.\/..\/models\/userSchema')
const res = User.updateMany({userId:{$in:[10001,10002]}},{state:2})<\/code><\/pre>\n\n\n\n
\u4e0a\u9762\u4e24\u79cd\u65b9\u6cd5\u90fd\u4f1a\u8fd4\u56de\u5220\u9664\u540e\u7684\u6761\u6570<\/p>\n\n\n\n
\n\n\n\n
\u67e5\u627e\u5e76\u66f4\u65b0\u6570\u636e<\/h2>\n\n\n\n
const User = require('.\/..\/models\/userSchema')
\/*
* \u8fd9\u91cc\u7684User\u662f\u5b9a\u4e49\u597d\u7684\u6570\u636e\u6a21\u578b
* \u67e5\u627e User\u96c6\u5408\u4e2d userId\u4e3a100\u7684\u6570\u636e\uff0c\u66f4\u65b0\u5b57\u6bb5 mobile\u3001job \u4e24\u4e2a\u5b57\u6bb5
*\/
const res = await User.findOneAndUpdate({ userId:\"100\" }, { mobile:123, job:456 });<\/code><\/pre>\n\n\n\n
findOneAndUpdate \u4f7f\u7528\u573a\u666f—-\u81ea\u589eID<\/h3>\n\n\n\n
\u65b0\u5efa\u6570\u636e\u6a21\u578b counterSchema<\/p>\n\n\n\n
\u200b
\/**
 *\u7ef4\u62a4\u7528\u6237ID\u81ea\u589e\u957f\u8868
 *\/
const mongoose = require(\"mongoose\")
const userSchema =  mongoose.Schema({
  _id:String,
  sequence_value:Number
})
module.exports = mongoose.model(\"counter\",userSchema,\"counters\")
\/**\u63a5\u53d7\u4e09\u4e2a\u53c2\u6570
 * \u6a21\u578b\u540d\u79f0
 * \u6a21\u578b
 * \u96c6\u5408\u540d\u79f0
 *\/
\u200b<\/code><\/pre>\n\n\n\n
\u4f7f\u7528<\/p>\n\n\n\n
const doc = await Counter.findOneAndUpdate({ _id: 'userId' }, { $inc: { sequence_value: 1 } }, { new: true })
\/*
*  \u7b2c\u4e00\u4e2a\u53c2\u6570\u4e3a\u8981\u81ea\u589e\u7684\u5b57\u6bb5\u3002{ _id: 'userId' }
*  \u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e3a $inc\u4fee\u9970\u7b26 sequence_value \u5b57\u6bb5\u52a0\u4e00 
*  \u7b2c\u4e09\u4e2a\u53c2\u6570\u4e3a new:true \u8868\u793a\u8fd4\u56de\u66f4\u65b0\u540e\u7684\u5bf9\u8c61\uff0c\u4e3afalse\u8868\u793a\u66f4\u65b0\u524d\u7684\u5bf9\u8c61\uff0c\u9ed8\u8ba4\u662ffalse
*\/<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u67e5\u627e\u76f8\u5173\u7684\u6280\u5de7<\/h2>\n\n\n\n
\/*
*   \u8fd9\u91cc\u7684User\u662f\u5b9a\u4e49\u597d\u7684\u6570\u636e\u6a21\u578b
*   \u4f7f\u7528 $or \u4fee\u9970\u7b26 {$or:[{\u67e5\u627e\u7684key:\u67e5\u627e\u7684value,key:value}]},\"\u8868\u793a\u8fd4\u56de\u7684\u5b57\u6bb51 \u8fd4\u56de\u7684\u5b57\u6bb52 \u8fd4\u56de\u7684\u5b57\u6bb53\"
*\/
const User = require('.\/..\/models\/userSchema')
const res = await User.findOne({$or:[{userName:\"admin\",userEmail:\"admin@qq.com\"}]},\"_id userName userEmail\")<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u521b\u5efa\u6216\u63d2\u5165\u6587\u6863<\/h2>\n\n\n\n
\/*
* \u8fd9\u91cc\u7684User\u662f\u5b9a\u4e49\u597d\u7684\u6570\u636e\u6a21\u578b
*\/
const User = require('.\/..\/models\/userSchema')
const user = new User({
        userId:doc.sequence_value,
        userName,
        userPwd:md5('admin'),
        userEmail,
        role:1,\/\/ \u9ed8\u8ba4\u4e3a\u666e\u901a\u7528\u6237
        roleList,
        job,
        state,
        deptId,
        mobile
})
user.save()<\/code><\/pre>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6570\u636e\u5e93\u6982\u5ff5\u5bf9\u6bd4 SQL Mongo \u8868\uff08Table\uff09 \u96c6\u5408 \uff08collection\uff09 \u884c \uff08Row\uff09 \u6587\u6863 \uff08 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"class_list":["post-390","post","type-post","status-publish","format-standard","hentry","category-monggodb"],"_links":{"self":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts\/390","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=390"}],"version-history":[{"count":1,"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts\/390\/revisions"}],"predecessor-version":[{"id":391,"href":"https:\/\/gjweb.top\/index.php?rest_route=\/wp\/v2\/posts\/390\/revisions\/391"}],"wp:attachment":[{"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=390"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gjweb.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}