AWS documentdb documentation change

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

File: documentdb/latest/developerguide/setIsSubset.md

Summary

Added new documentation page for the $setIsSubset operator in Amazon DocumentDB, including description, parameters, MongoDB Shell example, and code examples in Node.js and Python

Security assessment

This change adds documentation for a new DocumentDB operator ($setIsSubset) with code examples that include TLS connection parameters (tls=true, tlsCAFile=global-bundle.pem). While the primary focus is on documenting a query operator, the code examples demonstrate secure connection practices by including TLS configuration, which is a security best practice for database connections.

Diff

diff --git a/documentdb/latest/developerguide/setIsSubset.md b/documentdb/latest/developerguide/setIsSubset.md
index 8b1378917..2054e9040 100644
--- a//documentdb/latest/developerguide/setIsSubset.md
+++ b//documentdb/latest/developerguide/setIsSubset.md
@@ -0,0 +1 @@
+[](/pdfs/documentdb/latest/developerguide/developerguide.pdf#setIsSubset "Open PDF")
@@ -1,0 +3,117 @@
+[Documentation](/index.html)[Amazon DocumentDB](/documentdb/index.html)[Developer Guide](what-is.html)
+
+Example (MongoDB Shell)Code examples
+
+# $setIsSubset
+
+The `$setIsSubset` operator in Amazon DocumentDB is used to determine if a set of values is a subset of another set. It is useful for performing set-based comparisons and operations on array fields.
+
+**Parameters**
+
+  * `field`: The field to apply the `$setIsSubset` operator to.
+
+  * `set`: The set to compare the field against.
+
+
+
+
+## Example (MongoDB Shell)
+
+The following example demonstrates the usage of the `$setIsSubset` operator to check if the `tags` field is a subset of the specified set.
+
+**Create sample documents**
+    
+    
+    db.products.insertMany([
+      { _id: 1, name: "Product A", tags: ["tag1", "tag2", "tag3"] },
+      { _id: 2, name: "Product B", tags: ["tag1", "tag2"] },
+      { _id: 3, name: "Product C", tags: ["tag2", "tag3"] }
+    ]);
+
+**Query example**
+    
+    
+    db.products.find({
+      $expr: { $setIsSubset: [["tag1", "tag2"], "$tags"] }
+    })
+
+*Note:* `$setIsSubset` is an aggregation operator and cannot be used directly in find() queries. In this example, `$expr` is used with `find()` to bridge the gap between query operators and aggregation expressions.
+
+**Output**
+    
+    
+    [
+      { "_id" : 1, "name" : "Product A", "tags" : [ "tag1", "tag2", "tag3" ] },
+      { "_id" : 2, "name" : "Product B", "tags" : [ "tag1", "tag2" ] }
+    ]
+
+The query returns the documents where the `tags` field is a subset of the set `["tag1", "tag2"]`.
+
+## Code examples
+
+To view a code example for using the `$setIsSubset` 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('products');
+    
+      const result = await collection.find({
+        $expr: { $setIsSubset: [["tag1", "tag2"], "$tags"] }
+      }).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['products']
+    
+        result = list(collection.find({
+            '$expr': {'$setIsSubset': [['tag1', 'tag2'], '$tags']}
+        }))
+    
+        print(result)
+    
+        client.close()
+    
+    example()
+
+![Warning](https://d1ge0kk1l5kms0.cloudfront.net/images/G/01/webservices/console/warning.png) **Javascript is disabled or is unavailable in your browser.**
+
+To use the Amazon Web Services Documentation, Javascript must be enabled. Please refer to your browser's Help pages for instructions.
+
+[Document Conventions](/general/latest/gr/docconventions.html)
+
+$setIntersection
+
+$setUnion
+
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