编写一次MongoDB插入语句以一次多次插入
对于多个插入，请在MongoDB中使用insert()。让我们用文档创建一个集合-
> db.demo689.insert([
... {ClientName:"Chris","ClientAge":34,"ClientCountryName":"US"},
... {ClientName:"David","ClientAge":28,"ClientCountryName":"UK"},
... {ClientName:"Bob","ClientAge":39,"ClientCountryName":"AUS"},
... ]);
BulkWriteResult({
"writeErrors" : [ ],
"writeConcernErrors" : [ ],
"nInserted" : 3,
"nUpserted" : 0,
"nMatched" : 0,
"nModified" : 0,
"nRemoved" : 0,
"upserted" : [ ]
})在find()方法的帮助下显示集合中的所有文档-
> db.demo689.find();
这将产生以下输出-
{ "_id" : ObjectId("5ea580dfa7e81adc6a0b3967"), "ClientName" : "Chris", "ClientAge" : 34, "ClientCountryName" : "US" }
{ "_id" : ObjectId("5ea580dfa7e81adc6a0b3968"), "ClientName" : "David", "ClientAge" : 28, "ClientCountryName" : "UK" }
{ "_id" : ObjectId("5ea580dfa7e81adc6a0b3969"), "ClientName" : "Bob", "ClientAge" : 39, "ClientCountryName" : "AUS" }