Min and max values of an array in MongoDB?

To get the min and max values, use $min and $max. Let us create a collection with documents −

> db.demo286.insertOne({"details":[{Value1:70,Value2:50},{Value1:30,Value2:36}]}); {    "acknowledged" : true,    "insertedId" : ObjectId("5e4ac743f49383b52759cbbc") }

Display all documents from a collection with the help of find() method −

> db.demo286.find().pretty();

This will produce the following output −

{    "_id" : ObjectId("5e4ac743f49383b52759cbbc"),    "details" : [       {          "Value1" : 70,          "Value2" : 50       },       {          "Value1" : 30,          "Value2" : 36       }    ] }

Here is the query to get min and max values of an array −

> db.demo286.aggregate([   { "$project": { "name": 1, "MinValue1": { "$min": "$details.Value1" },     "MaxValue2": { "$max": "$details.Value2" } }} ])

This will produce the following output −

{ "_id" : ObjectId("5e4ac743f49383b52759cbbc"), "MinValue1" : 30, "MaxValue2" : 50 }