DOCSP-32718: Compound comments

source/code-snippets/indexes/compound.js

@@ -5,12 +5,15 @@ const { MongoClient } = require("mongodb");
 const uri =
   "mongodb+srv://<user>:<password>@<cluster-url>?writeConcern=majority";
 
+// Create a new client and connect to MongoDB
 const client = new MongoClient(uri);
 
 async function run() {
   try {
     // begin-idx
+    // Connect to the "sample_mflix" database
     const database = client.db("sample_mflix");
+    // Access the database's "movies" collection
     const movies = database.collection("movies");
 
     // Create an ascending index on the "type" and "genre" fields
@@ -20,18 +23,24 @@ async function run() {
     // end-idx
 
     // begin-query
+    // Define a query to find movies in the "Drama" genre
     const query = { type: "movie", genre: "Drama" };
+    // Define sorting criteria for the query results
     const sort = { type: 1, genre: 1 };
+    // Include only the type and genre fields in the query results
     const projection = { _id: 0, type: 1, genre: 1 };
 
+    // Execute the query using the defined criteria and projection
     const cursor = movies
       .find(query)
       .sort(sort)
       .project(projection);
     // end-query
 
   } finally {
+    // Close the MongoDB client connection
     await client.close();
   }
 }
+// Run the function and handle any errors
 run().catch(console.dir);