MongoDB sort()

MongoDB sort() method for beginners and professionals with examples on CRUD, insert document, query document, update document, delete document, use database, projection etc.

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MongoDB sort() method

In MongoDB, sort() method is used to sort the documents in the collection. This method accepts a document containing list of fields along with their sorting order.

The sorting order is specified as 1 or -1.

1 is used for ascending order sorting.
-1 is used for descending order sorting.

Syntax:

db.COLLECTION_NAME.find().sort({KEY:1})

Scenario

Consider an example which has a collection name TheDeveloperBlog.

This collection has following fields within it.

    [
      {
        Course: "Java",
        details: { Duration: "6 months", Trainer: "Sonoo Jaiswal" },
        Batch: [ { size: "Medium", qty: 25 } ],
        category: "Programming Language"
      },
      {
        Course: ".Net",
        details: { Duration: "6 months", Trainer: "Prashant Verma" },
        Batch: [ { size: "Small", qty: 5 }, { size: "Medium", qty: 10 }, ],
        category: "Programming Language"
      },
      {
        Course: "Web Designing",
        details: { Duration: "3 months", Trainer: "Rashmi Desai" },
        Batch: [ { size: "Small", qty: 5 }, { size: "Large", qty: 10 } ],
        category: "Programming Language"
      }
    ];

Execute the following query to display the documents in descending order.

db.TheDeveloperBlog.find().sort({"Course":-1})

This will show the documents in descending order.

{ "_id" : ObjectId("564dbced8e2c097d15fbb603"), "Course" : "Web Designing", "det
ails" : { "Duration" : "3 months", "Trainer" : "Rashmi Desai" }, "Batch" : [ { "
size" : "Small", "qty" : 5 }, { "size" : "Large", "qty" : 10 } ], "category" : "
Programming Language" }
{ "_id" : ObjectId("564dbced8e2c097d15fbb601"), "Course" : "Java", "details" : {
 "Duration" : "6 months", "Trainer" : "Sonoo Jaiswal" }, "Batch" : [ { "size" :
"Medium", "qty" : 25 } ], "category" : "Programming Language" }
{ "_id" : ObjectId("564dbced8e2c097d15fbb602"), "Course" : ".Net", "details" : {
 "Duration" : "6 months", "Trainer" : "Prashant Verma" }, "Batch" : [ { "size" :
 "Small", "qty" : 5 }, { "size" : "Medium", "qty" : 10 } ], "category" : "Progra
mming Language" }

Note: By default sort() method displays the documents in ascending order. If you don't specify the sorting preference, it will display documents in ascending order.

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Java

Core Array ArrayList HashMap String 2D Cast Character Console Deque Duplicates File For Format HashSet If IndexOf Lambda Math ParseInt Process Random Regex Replace Sort Split StringBuilder Substring Switch Vector While

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