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Get the maximum element in MongoDB collection?
To get the maximum element from the collection, sort in descending order with limit. Let us create a collection with documents −
> > db.demo669.insertOne({"Marks":76}); { "acknowledged" : true, "insertedId" : ObjectId("5ea3133c04263e90dac943d9") } > db.demo669.insertOne({"Marks":55}); { "acknowledged" : true, "insertedId" : ObjectId("5ea3133f04263e90dac943da") } > db.demo669.insertOne({"Marks":89}); { "acknowledged" : true, "insertedId" : ObjectId("5ea3134204263e90dac943db") } > db.demo669.insertOne({"Marks":88}); { "acknowledged" : true, "insertedId" : ObjectId("5ea3134504263e90dac943dc") } > db.demo669.insertOne({"Marks":79}); { "acknowledged" : true, "insertedId" : ObjectId("5ea3134e04263e90dac943dd") }
Display all documents from a collection with the help of find() method −
> db.demo669.find();
This will produce the following output −
{ "_id" : ObjectId("5ea3133c04263e90dac943d9"), "Marks" : 76 } { "_id" : ObjectId("5ea3133f04263e90dac943da"), "Marks" : 55 } { "_id" : ObjectId("5ea3134204263e90dac943db"), "Marks" : 89 } { "_id" : ObjectId("5ea3134504263e90dac943dc"), "Marks" : 88 } { "_id" : ObjectId("5ea3134e04263e90dac943dd"), "Marks" : 79 }
Following is the query to get the maximum element from the collection −
> db.demo669.find().sort({"Marks":-1}).limit(1);
This will produce the following output −
{ "_id" : ObjectId("5ea3134204263e90dac943db"), "Marks" : 89 }
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