How to print results of script in MongoDB?


We will use printjson() for this. Let us first create a collection with documents −

> dbprintResultScriptDemoinsertOne({"StudentName":"John","StudentAge":21});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cf22c02b64a577be5a2bc0b")
}
> dbprintResultScriptDemoinsertOne({"StudentName":"Carol","StudentAge":20});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cf22c09b64a577be5a2bc0c")
}
> dbprintResultScriptDemoinsertOne({"StudentName":"David","StudentAge":19});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5cf22c11b64a577be5a2bc0d")
}

Following is the query to display all documents from a collection with the help of find() method −

> dbprintResultScriptDemofind();

This will produce the following document −

{ "_id" : ObjectId("5cf22c02b64a577be5a2bc0b"), "StudentName" : "John", "StudentAge" : 21 }
{ "_id" : ObjectId("5cf22c09b64a577be5a2bc0c"), "StudentName" : "Carol", "StudentAge" : 20 }
{ "_id" : ObjectId("5cf22c11b64a577be5a2bc0d"), "StudentName" : "David", "StudentAge" : 19 }

Following is the query to print results of script −

> var document=dbprintResultScriptDemofind();
> while (documenthasNext()) {
   printjson(documentnext());
}

This will produce the following document −

{
   "_id" : ObjectId("5cf22c02b64a577be5a2bc0b"),
   "StudentName" : "John",
   "StudentAge" : 21
}
{
   "_id" : ObjectId("5cf22c09b64a577be5a2bc0c"),
   "StudentName" : "Carol",
   "StudentAge" : 20
}
{
   "_id" : ObjectId("5cf22c11b64a577be5a2bc0d"),
   "StudentName" : "David",
   "StudentAge" : 19
}
raja
Published on 14-Jun-2019 14:47:00
Advertisements