为一次插入多个内容编写 MongoDB 插入语句
对于多重插入,在 MongoDB 中使用 insert()。让我们创建一个具有文档的集合 -
> 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" : [ ]
})使用 find() 方法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" }
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