要在MongoDB中批量插入,请使用initializeUnorderedBulkOp()
。让我们创建一个包含文档的集合-
> var bulkInsertDoc = db.demo663.initializeUnorderedBulkOp(); > bulkInsertDoc.insert( { Name: "John",CountryName:"US"} ); > bulkInsertDoc.insert( { Name: "Chris",CountryName:"UK"} ); > bulkInsertDoc.insert( { Name: "David",CountryName:"AUS"} ); > bulkInsertDoc.execute(); 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.demo663.find();
这将产生以下输出-
{ "_id" : ObjectId("5ea1b41424113ea5458c7d05"), "Name" : "John", "CountryName" : "US" } { "_id" : ObjectId("5ea1b41424113ea5458c7d06"), "Name" : "Chris", "CountryName" : "UK" } { "_id" : ObjectId("5ea1b41424113ea5458c7d07"), "Name" : "David", "CountryName" : "AUS" }