AWS documentdb documentation change

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

File: documentdb/latest/developerguide/millisecond.md

Summary

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

Security assessment

This change adds documentation for a date/time operator ($millisecond) that extracts milliseconds from date values. The code examples include secure connection parameters (TLS, CA file) but this is standard secure connection practice, not a new security feature or fix for a security issue. The documentation is purely functional and educational about using the operator.

Diff

diff --git a/documentdb/latest/developerguide/millisecond.md b/documentdb/latest/developerguide/millisecond.md
index 8b1378917..3fb37eaa0 100644
--- a//documentdb/latest/developerguide/millisecond.md
+++ b//documentdb/latest/developerguide/millisecond.md
@@ -0,0 +1 @@
+[](/pdfs/documentdb/latest/developerguide/developerguide.pdf#millisecond "Open PDF")
@@ -1,0 +3,142 @@
+[Documentation](/index.html)[Amazon DocumentDB](/documentdb/index.html)[Developer Guide](what-is.html)
+
+Example (MongoDB Shell)Code examples
+
+# $millisecond
+
+The `$millisecond` operator in Amazon DocumentDB is used to extract the millisecond portion of a date value.
+
+**Parameters**
+
+None
+
+## Example (MongoDB Shell)
+
+This example demonstrates how to use the `$millisecond` operator to extract the millisecond portion of a date value.
+
+**Create sample documents**
+    
+    
+    db.events.insert([
+      {
+        "name": "Event 1",
+        "timestamp": ISODate("2023-04-21T10:30:15.123Z")
+      },
+      {
+        "name": "Event 2",
+        "timestamp": ISODate("2023-04-21T10:30:15.456Z")
+      },
+      {
+        "name": "Event 3",
+        "timestamp": ISODate("2023-04-21T10:30:15.789Z")
+      }
+    ])
+
+**Query example**
+    
+    
+    db.events.aggregate([
+      {
+        $project: {
+          name: 1,
+          milliseconds: { $millisecond: "$timestamp" }
+        }
+      }
+    ])
+
+**Output**
+    
+    
+    [
+      {
+        "_id": ObjectId("644332a42054ed1b0d15f0c1"),
+        "name": "Event 1",
+        "milliseconds": 123
+      },
+      {
+        "_id": ObjectId("644332a42054ed1b0d15f0c2"),
+        "name": "Event 2",
+        "milliseconds": 456
+      },
+      {
+        "_id": ObjectId("644332a42054ed1b0d15f0c3"),
+        "name": "Event 3",
+        "milliseconds": 789
+      }
+    ]
+
+## Code examples
+
+To view a code example for using the `$millisecond` command, choose the tab for the language that you want to use:
+
+Node.js
+    
+    
+    
+    const { MongoClient } = require('mongodb');
+    
+    async function main() {
+      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 events = db.collection('events');
+    
+      const result = await events.aggregate([
+        {
+          $project: {
+            name: 1,
+            milliseconds: { $millisecond: '$timestamp' }
+          }
+        }
+      ]).toArray();
+    
+      console.log(result);
+    
+      await client.close();
+    }
+    
+    main();
+
+Python
+    
+    
+    
+    from pymongo import MongoClient
+    
+    client = MongoClient('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false')
+    db = client['test']
+    events = db['events']
+    
+    result = list(events.aggregate([
+        {
+            '$project': {
+                'name': 1,
+                'milliseconds': { '$millisecond': '$timestamp' }
+            }
+        }
+    ]))
+    
+    print(result)
+    
+    client.close()
+
+![Warning](https://d1ge0kk1l5kms0.cloudfront.net/images/G/01/webservices/console/warning.png) **Javascript is disabled or is unavailable in your browser.**
+
+To use the Amazon Web Services Documentation, Javascript must be enabled. Please refer to your browser's Help pages for instructions.
+
+[Document Conventions](/general/latest/gr/docconventions.html)
+
+$mergeObjects
+
+$min
+
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