// Load the documentconst doc = await CharacterModel.findOne({ name: 'Jon Snow' });// Update the document using `Document#updateOne()`// Equivalent to `CharacterModel.updateOne({ _id: doc._id }, update)`const update = { title: 'King in the North' };await doc.updateOne(update);...
使用updateOne,updateMany或findByIdAndUpdate方法,我们可以更新数据库中的数据: Blog.updateOne({ title: 'Mongoose Guide' }, { title: 'Mongoose Guide Updated' }) .then(res => { console.log(res); }) .catch(err => { console.error(err); }); 7.0 删除数据 使用deleteOne,deleteMany或findByIdAnd...
updateOne({ _id: _id }, { $set: { email: 'AVENUE@Q.COM' } }); // update to 'avenue@q.com' As you can see above, setters allow you to transform the data before it stored in MongoDB, or before executing a query. NOTE: we could have also just used the built-in lowercase:...
/*默认情况下会使用新对象来替换旧对象*/db.stu.update({gender:'男'},{gender:'male'}) /*修改指定字段*/db.stu.update({gender:'男'},{$set: {gender:'male'}}) 删除remove(默认同deleteMany), deleteOne, deleteMany /*删除多个*/db.stu.remove({gender:'男'}) /*删除一个*/ db.stu.remove(...
Model.updateOne(conditions, doc, [options], [callback] ) 删除文档 删除文档主要是两个方法,使用方法完全和查询一致。 Model.deleteMany(condition) Model.deleteOne(condition) 再深一点 细品连接 缓存机制 根据上面的例子,你会发现一个奇怪的现象, 我们并没有判断连接是否成功就进行了操作?这是因为Mongoose内部...
deleteOne() deleteMany() findOneAndDelete() findOneAndReplace() findOneAndUpdate() updateOne() updateMany() Defaults to the schema's writeConcern.j option Example: await mongoose.model('Person').deleteOne({ name: 'Ned Stark' }).j(true);Query...
在mongoose nodejs中,在updateOne选项中传递会话与在bulkWrite选项中传递会话的区别如下: 1. updateOne选项中传递会话: - 概念:updateOne是...
You can alsofindOne,findById,update, etc. constinstance=awaitMyModel.findOne({/* ... */});console.log(instance.my.key);// 'hello' For more details check outthe docs. Important!If you opened a separate connection usingmongoose.createConnection()but attempt to access the model throughmongoose...
Model.updateOne() 3.静态方法和实例方法 //varmongoose =require("./db")varUserSchema= mongoose.Schema({name: {type:String, },sn: {type:String,index:true},age:Number,status: {type:Number,default:1//默认参数,可以让数据库没有的属性增加到数据库里} ...
wait Person.updateOne({ _id: ObjectId('61090d4287e3a9a69c50c842'), }, { address: 'guizhou', }); // 增加配置项 {runValidators: true,} 可触发校验 1. 2. 3. 4. 5. 6. 7. 8. update系列的方法主要有 Model.updateOne() Model.updateMany() ...