步骤1:连接MongoDB数据库 在代码中使用以下代码来连接MongoDB数据库: // 引入mongoose模块constmongoose=require('mongoose');// 连接MongoDB数据库mongoose.connect('mongodb://localhost:27017/myDatabase',{useNewUrlParser:true,useUnifiedTopology
obj[key] = tmp[key];} } this._db._initExtraInfo();this._mongo.insert(this._fullName, obj);this._lastID = obj._id;this._db._getExtraInfo("Inserted");} > db.user.save function (obj) { if (obj == null || typeof obj == "undefined") { throw "can't save a ...
> db.name.save({"_id" : ObjectId("50592253955cfb1fd75066ce")}, {"fname" : "dongren", "lname" : "zeng"}) > db.name.find() #检查发现,数据修改过来了,但和预期的结果不一样,跟之前插入数据一样,save方法也同样将第二个参数"忽略"了. { "_id" : ObjectId("5059221f955cfb1fd75066cb"...
MongoDB 存储过程是存储在db.system.js表中的,我们想象一个简单的sql 自定义函数如下:function addNumbers( x , y ) { return x + y; } 下面我们将这个sql 自定义函数转换为MongoDB 的存储过程,使用save()方法保存:> db.system.js.save({_id:"addNumbers", value:function(x, y){ return x + y;...
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const schema = Schema({ name: String, age: Number });schema.pre('save', function() { this.$locals.start = Date.now();});schema.post('save', function() { console.log('Saved in', Date.now() - this.$locals.start, 'ms');});const Person = mongoose.model('Person', schema);...
uri:'mongodb://127.0.0.1:27017/test', collection:'savetomongo', bulk:{ mode:'unordered' } }); //go!!! fs.createReadStream(path.join(__dirname,'./accounts.json')); .pipe(JSONStream.parse('*')) .pipe(saveToMongo) .on('execute-error',function(err){ ...
MongoDB If your data store of choice isn't listed here please create an engine and send me a pull request. To see an example of how to create an engine, please seesave-mongodb. Installation npm install save Example varsave=require('save'),s=save('person')s.on('create',function(){...
public function index(){ $query = Db::query("select * from `book`"); // 输出查询出的结果集数组 dump($query); } execute方法用来执行MySql新增和修改的操作 public function index(){ $execute = Db::execute("insert into `book` values(0,'大话数据结构','40','大牛')"); // 输出查询出...
问猫鼬.save()不使用回调ENmongoose.connect('mongodb://localhost:27017/zohaibdb')；