AWS documentdb documentation change

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

File: documentdb/latest/developerguide/push-aggregation.md

Summary

Added new documentation page for the $push aggregation operator with MongoDB Shell, Node.js, and Python code examples

Security assessment

This change adds standard documentation for a database aggregation operator ($push) with code examples. The examples include TLS connection parameters (tls=true, tlsCAFile=global-bundle.pem) which are standard security practices for database connections, but this is not addressing a specific security vulnerability or incident. The change appears to be routine feature documentation.

Diff

diff --git a/documentdb/latest/developerguide/push-aggregation.md b/documentdb/latest/developerguide/push-aggregation.md
index 8b1378917..7edecfb52 100644
--- a//documentdb/latest/developerguide/push-aggregation.md
+++ b//documentdb/latest/developerguide/push-aggregation.md
@@ -0,0 +1 @@
+[](/pdfs/documentdb/latest/developerguide/developerguide.pdf#push-aggregation "Open PDF")
@@ -1,0 +3,126 @@
+[Documentation](/index.html)[Amazon DocumentDB](/documentdb/index.html)[Developer Guide](what-is.html)
+
+Example (MongoDB Shell)Code examples
+
+# $push
+
+The `$push` aggregation operator returns an array of all values from a specified expression for each group. It is typically used within the `$group` stage to accumulate values into an array.
+
+**Parameters**
+
+  * `expression`: The expression to evaluate for each document in the group.
+
+
+
+
+## Example (MongoDB Shell)
+
+The following example demonstrates using the `$push` operator to collect all product names for each category.
+
+**Create sample documents**
+    
+    
+    db.sales.insertMany([
+      { _id: 1, category: "Electronics", product: "Laptop", amount: 1200 },
+      { _id: 2, category: "Electronics", product: "Mouse", amount: 25 },
+      { _id: 3, category: "Furniture", product: "Desk", amount: 350 },
+      { _id: 4, category: "Furniture", product: "Chair", amount: 150 },
+      { _id: 5, category: "Electronics", product: "Keyboard", amount: 75 }
+    ]);
+
+**Query example**
+    
+    
+    db.sales.aggregate([
+      {
+        $group: {
+          _id: "$category",
+          products: { $push: "$product" }
+        }
+      }
+    ]);
+
+**Output**
+    
+    
+    [
+      { _id: 'Furniture', products: [ 'Desk', 'Chair' ] },
+      { _id: 'Electronics', products: [ 'Laptop', 'Mouse', 'Keyboard' ] }
+    ]
+
+## Code examples
+
+To view a code example for using the `$push` aggregation operator, 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('sales');
+    
+      const result = await collection.aggregate([
+        {
+          $group: {
+            _id: "$category",
+            products: { $push: "$product" }
+          }
+        }
+      ]).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['sales']
+    
+        result = list(collection.aggregate([
+            {
+                '$group': {
+                    '_id': '$category',
+                    'products': { '$push': '$product' }
+                }
+            }
+        ]))
+    
+        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.**
+
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+
+[Document Conventions](/general/latest/gr/docconventions.html)
+
+$pow
+
+$project
+
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