TheinsertMany()method has the following syntax: db.collection.insertMany( [<document 1> , <document 2>, ... ], { writeConcern: <document>, ordered: <boolean> } ) Parameter Type Description document document An array of documents to insert into the collection. ...
db.collection.insertMany()¶ 3.2 新版功能. Inserts multiple documents into a collection. TheinsertMany()method has the following syntax: db.collection.insertMany({[<document1>,<document2>,...]},{writeConcern:<document>,ordered:<boolean>}) ...
A few documents were inserted into the address collection. Now let’s add a few documents to another collection: db.userInfo.insertMany( [ { "contact_name": "Bob", "age": 27, "sex" : "male", "citizenship" : "Filipino" }, { "contact_name": "Jack", "age": 22, "sex" : "mal...
insertMany( [ { _id: 100, sku: "abc123", description: "Single line description." }, { _id: 101, sku: "abc789", description: "First line\nSecond line" }, { _id: 102, sku: "xyz456", description: "Many spaces before line" }, { _id: 103, sku: "xyz789", description: "...
$lte 匹配字段值小于等于指定值的文档 { <field>: { $lte: <value> } } $ne 匹配字段值不等于指定值的文档,包括没有这个字段的文档 { <field>: { $ne: <value> } } $in 匹配字段值等于指定数组中的任何值 { field: { $in: [<value1>, <value2>, ... <valueN> ] } } ...
the source-available, free-to-use, and self-managed version of mongodb syntax the $push operator has the form: { $push : { < field1 > : < value1 > , ... } } to specify a <field> in an embedded document or in an array, use dot notation . behavior starting in mongodb 5.0,...
insert_many.js const mongo = require('mongodb'); const MongoClient = mongo.MongoClient; const ObjectID = mongo.ObjectID; const url = 'mongodb://localhost:27017'; MongoClient.connect(url, { useNewUrlParser: true }, (err, client) => { if (err) throw err; const db = client.db("...
If you would like to test these examples on your own installation, you can insert them with the bulk command below. use 3tdb db.universities.insertMany([ { country : 'Spain', city : 'Salamanca', name : 'USAL', location : {
db.collection.insertMany( [<document1>,<document2>, ... ], { writeConcern:<document>, ordered:<boolean>} ) db.collection.save 插入一个新的文档 更新一个已经存在的文档(需通过_id字段进行覆盖式更新) 插入主键相同的文档时,insert 方法会报错,save 方法会覆盖原文档 ...
Syntax: { field: { $lt: value } } $lt selects the documents where the value of the field is less than (i.e. <) the specified value. For most data types, comparison operators only perform comparisons on fields where the BSON type matches the query value's type. MongoDB supports limi...