AWS documentdb documentation change

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

File: documentdb/latest/developerguide/toUpper.md

Summary

Added new documentation page for the $toUpper operator in Amazon DocumentDB with examples in MongoDB Shell, Node.js, and Python

Security assessment

This change adds documentation for the $toUpper string conversion operator. The code examples include standard TLS connection parameters (tls=true, tlsCAFile=global-bundle.pem) which are routine security best practices, but there is no evidence this addresses a specific security vulnerability or incident. The change appears to be routine feature documentation.

Diff

diff --git a/documentdb/latest/developerguide/toUpper.md b/documentdb/latest/developerguide/toUpper.md
index 8b1378917..0018f6e9d 100644
--- a//documentdb/latest/developerguide/toUpper.md
+++ b//documentdb/latest/developerguide/toUpper.md
@@ -0,0 +1 @@
+[](/pdfs/documentdb/latest/developerguide/developerguide.pdf#toUpper "Open PDF")
@@ -1,0 +3,108 @@
+[Documentation](/index.html)[Amazon DocumentDB](/documentdb/index.html)[Developer Guide](what-is.html)
+
+Example (MongoDB Shell)Code examples
+
+# $toUpper
+
+The `$toUpper` operator in Amazon DocumentDB is used to convert a string to uppercase.
+
+**Parameters**
+
+  * `expression`: The string expression to convert to uppercase.
+
+
+
+
+## Example (MongoDB Shell)
+
+The following example demonstrates the usage of the `$toUpper` operator to convert the `Desk` field to uppercase.
+
+**Create sample documents**
+    
+    
+    db.locations.insertMany([
+      { "_id": 1, "Desk": "düsseldorf-bvv-021" },
+      { "_id": 2, "Desk": "munich-hgg-32a" }
+    ]);
+
+**Query example**
+    
+    
+    db.locations.aggregate([
+      { $project: { item: { $toUpper: "$Desk" } } }
+    ]);
+
+**Output**
+    
+    
+    { "_id" : 1, "item" : "DüSSELDORF-BVV-021" }
+    { "_id" : 2, "item" : "MUNICH-HGG-32A" }
+
+## Code examples
+
+To view a code example for using the `$toUpper` command, choose the tab for the language that you want to use:
+
+Node.js
+    
+    
+    
+    const { MongoClient } = require('mongodb');
+    
+    async function example() {
+      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('locations');
+    
+      const result = await collection.aggregate([
+        { $project: { item: { $toUpper: '$Desk' } } }
+      ]).toArray();
+    
+      console.log(result);
+    
+      await client.close();
+    }
+    
+    example();
+
+Python
+    
+    
+    
+    from pymongo import MongoClient
+    
+    def example():
+        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['locations']
+    
+        result = list(collection.aggregate([
+            { '$project': { 'item': { '$toUpper': '$Desk' } } }
+        ]))
+    
+        print(result)
+    
+        client.close()
+    
+    example()
+
+![Warning](https://d1ge0kk1l5kms0.cloudfront.net/images/G/01/webservices/console/warning.png) **Javascript is disabled or is unavailable in your browser.**
+
+To use the Amazon Web Services Documentation, Javascript must be enabled. Please refer to your browser's Help pages for instructions.
+
+[Document Conventions](/general/latest/gr/docconventions.html)
+
+$toString
+
+$trim
+
+Did this page help you? - Yes
+
+Thanks for letting us know we're doing a good job!
+
+If you've got a moment, please tell us what we did right so we can do more of it.
+
+Did this page help you? - No
+
+Thanks for letting us know this page needs work. We're sorry we let you down.
+
+If you've got a moment, please tell us how we can make the documentation better.