MongoDB文档大容量插入
对于批量插入，可以insert()在MongoDB中使用。让我们创建一个包含文档的集合-
> var manyDocument = db.demo255.initializeUnorderedBulkOp();
> manyDocument.insert( { "Name":"Chris",Age:24} );
> manyDocument.insert( {"Name":"Bob",Age:22 } );
> manyDocument.insert( { "Name":"David",Age:23 } );
> manyDocument.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.demo255.find();
这将产生以下输出-
{ "_id" : ObjectId("5e47a25e1627c0c63e7dba82"), "Name" : "Chris", "Age" : 24 }
{ "_id" : ObjectId("5e47a25e1627c0c63e7dba83"), "Name" : "Bob", "Age" : 22 }
{ "_id" : ObjectId("5e47a25e1627c0c63e7dba84"), "Name" : "David", "Age" : 23 }