To find the minimum value in MongoDB, you can use sort() along with limit(1). The syntax is as follows −
db.yourCollectionName.find().sort({yourFieldName: 1}).limit(1);
To understand the concept, let us create a collection with the document. The query to create a collection with a document is as follows −
> db.findMinValueDemo.insertOne({"StudentMarks":78}); { "acknowledged" : true, "insertedId" : ObjectId("5c8f80ea2f684a30fbdfd59f") } > db.findMinValueDemo.insertOne({"StudentMarks":69}); { "acknowledged" : true, "insertedId" : ObjectId("5c8f80f02f684a30fbdfd5a0") } > db.findMinValueDemo.insertOne({"StudentMarks":79}); { "acknowledged" : true, "insertedId" : ObjectId("5c8f80f32f684a30fbdfd5a1") } > db.findMinValueDemo.insertOne({"StudentMarks":59}); { "acknowledged" : true, "insertedId" : ObjectId("5c8f80f82f684a30fbdfd5a2") } > db.findMinValueDemo.insertOne({"StudentMarks":91}); { "acknowledged" : true, "insertedId" : ObjectId("5c8f80fb2f684a30fbdfd5a3") }
Display all documents from a collection with the help of find() method. The query is as follows −
> db.findMinValueDemo.find().pretty();
The following is the output −
{ "_id" : ObjectId("5c8f80ea2f684a30fbdfd59f"), "StudentMarks" : 78 } { "_id" : ObjectId("5c8f80f02f684a30fbdfd5a0"), "StudentMarks" : 69 } { "_id" : ObjectId("5c8f80f32f684a30fbdfd5a1"), "StudentMarks" : 79 } { "_id" : ObjectId("5c8f80f82f684a30fbdfd5a2"), "StudentMarks" : 59 } { "_id" : ObjectId("5c8f80fb2f684a30fbdfd5a3"), "StudentMarks" : 91 }
Here is the query to find the minimum value in MongoDB −
> db.findMinValueDemo.find().sort({StudentMarks: 1}).limit(1);
The following is the output −
{ "_id" : ObjectId("5c8f80f82f684a30fbdfd5a2"), "StudentMarks" : 59 }