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$eq

The $eq operator in Amazon DocumentDB is used to match documents where the value of a field is equal to the specified value. This operator is commonly used in the find() method to retrieve documents that meet the specified criteria.

Parameters

Example (MongoDB Shell)

The following example demonstrates the usage of the $eq operator to find all documents where the name field is equal to "Thai Curry Palace".

Create sample documents

db.restaurants.insertMany([
  { name: "Thai Curry Palace", cuisine: "Thai", features: ["Private Dining"] },
  { name: "Italian Bistro", cuisine: "Italian", features: ["Outdoor Seating"] },
  { name: "Mexican Grill", cuisine: "Mexican", features: ["Takeout"] }
]);

Query example

db.restaurants.find({ name: { $eq: "Thai Curry Palace" } });

Output

{ "_id" : ObjectId("68ee586f916df9d39f3d9414"), "name" : "Thai Curry Palace", "cuisine" : "Thai", "features" : [ "Private Dining" ] }

Code examples

To view a code example for using the $eq command, choose the tab for the language that you want to use:

Node.js

const { MongoClient } = require('mongodb');

async function findByName(name) {
  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('restaurants');

  const results = await collection.find({ name: { $eq: name } }).toArray();
  console.log(results);

  await client.close();
}

findByName("Thai Curry Palace");

Python

from pymongo import MongoClient

def find_by_name(name):
    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["restaurants"]

    results = list(collection.find({ "name": { "$eq": name } }))
    print(results)

    client.close()

find_by_name("Thai Curry Palace")