AWS documentdb documentation change

Service: documentdb · 2026-03-31 · Documentation low

File: documentdb/latest/developerguide/position.md

Summary

Added new documentation page for the $position modifier in Amazon DocumentDB, including syntax, parameters, examples in MongoDB Shell, and code examples in Node.js and Python

Security assessment

This change adds general documentation for a MongoDB operator ($position) used with $push to insert elements at specific array positions. The examples show task management scenarios (adding 'Security audit' and 'Performance review' tasks) but these are example task names, not security-related documentation. The code examples include standard TLS connection parameters but these are routine security best practices already documented elsewhere, not new security features.

Diff

diff --git a/documentdb/latest/developerguide/position.md b/documentdb/latest/developerguide/position.md
index 8b1378917..c1ecb6595 100644
--- a//documentdb/latest/developerguide/position.md
+++ b//documentdb/latest/developerguide/position.md
@@ -0,0 +1 @@
+[](/pdfs/documentdb/latest/developerguide/developerguide.pdf#position "Open PDF")
@@ -1,0 +3,156 @@
+[Documentation](/index.html)[Amazon DocumentDB](/documentdb/index.html)[Developer Guide](what-is.html)
+
+Example (MongoDB Shell)Code examples
+
+# $position
+
+The `$position` modifier in Amazon DocumentDB specifies the location in the array at which the `$push` operator inserts elements. Without the `$position` modifier, the `$push` operator inserts elements to the end of the array.
+
+**Parameters**
+
+  * `field`: The array field to update.
+
+  * `num`: The position in the array where elements should be inserted, based on zero-based indexing.
+
+
+
+
+**Note** : To use the `$position` modifier, it must appear with the `$each` modifier.
+
+## Example (MongoDB Shell)
+
+The following example demonstrates how to use the `$position` operator to insert tasks at specific positions in a project management system.
+
+**Create sample documents**
+    
+    
+    db.projects.insertOne({ "_id": 1, "name": "Website Redesign", "tasks": ["Design mockups"] })
+
+**Query example 1 - Add urgent tasks at the beginning**
+    
+    
+    db.projects.updateOne(
+       { _id: 1 },
+       {
+         $push: {
+            tasks: {
+               $each: ["Security audit", "Performance review"],
+               $position: 0
+            }
+         }
+       }
+    )
+
+**Output 1**
+    
+    
+    { "_id": 1, "name": "Website Redesign", "tasks": ["Security audit", "Performance review", "Design mockups"] }
+
+**Query example 2 - Add tasks at specific position**
+    
+    
+    db.projects.insertOne({ "_id": 2, "name": "Mobile App", "tasks": ["Setup project", "Create wireframes", "Deploy to store"] })
+    
+    db.projects.updateOne(
+       { _id: 2 },
+       {
+         $push: {
+            tasks: {
+               $each: ["Code review", "Testing phase"],
+               $position: 2
+            }
+         }
+       }
+    )
+
+**Output 2**
+    
+    
+    { "_id": 2, "name": "Mobile App", "tasks": ["Setup project", "Create wireframes", "Code review", "Testing phase", "Deploy to store"] }
+
+## Code examples
+
+To view a code example for using the `$position` command, choose the tab for the language that you want to use:
+
+Node.js
+    
+    
+    
+    const { MongoClient } = require('mongodb');
+    
+    async function insertTasksAtPosition() {
+      const client = await MongoClient.connect('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false');
+      const db = client.db('test');
+      const collection = db.collection('projects');
+    
+      await collection.updateOne(
+        { _id: 1 },
+        {
+          $push: {
+            tasks: {
+              $each: ["Security audit", "Performance review"],
+              $position: 0
+            }
+          }
+        }
+      );
+    
+      const updatedProject = await collection.findOne({ _id: 1 });
+      console.log(updatedProject);
+    
+      await client.close();
+    }
+    
+    insertTasksAtPosition();
+
+Python
+    
+    
+    
+    from pymongo import MongoClient
+    
+    def insert_tasks_at_position():
+        client = MongoClient('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false')
+        db = client['test']
+        collection = db['projects']
+    
+        result = collection.update_one(
+            {'_id': 1},
+            {
+                '$push': {
+                    'tasks': {
+                        '$each': ['Security audit', 'Performance review'],
+                        '$position': 0
+                    }
+                }
+            }
+        )
+    
+        updated_project = collection.find_one({'_id': 1})
+        print(updated_project)
+    
+        client.close()
+    
+    insert_tasks_at_position()
+
+![Warning](https://d1ge0kk1l5kms0.cloudfront.net/images/G/01/webservices/console/warning.png) **Javascript is disabled or is unavailable in your browser.**
+
+To use the Amazon Web Services Documentation, Javascript must be enabled. Please refer to your browser's Help pages for instructions.
+
+[Document Conventions](/general/latest/gr/docconventions.html)
+
+$pop
+
+$pull
+
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+
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+
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+
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