$toUpper
The $toUpper operator in Amazon DocumentDB is used to convert a string to uppercase.
Parameters
Example (MongoDB Shell)
The following example demonstrates the usage of the $toUpper operator to convert the Desk field to uppercase.
Create sample documents
db.locations.insertMany([
{ "_id": 1, "Desk": "düsseldorf-bvv-021" },
{ "_id": 2, "Desk": "munich-hgg-32a" }
]);
Query example
db.locations.aggregate([
{ $project: { item: { $toUpper: "$Desk" } } }
]);
Output
{ "_id" : 1, "item" : "DüSSELDORF-BVV-021" }
{ "_id" : 2, "item" : "MUNICH-HGG-32A" }
Code examples
To view a code example for using the $toUpper 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('locations');
const result = await collection.aggregate([
{ $project: { item: { $toUpper: '$Desk' } } }
]).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['locations']
result = list(collection.aggregate([
{ '$project': { 'item': { '$toUpper': '$Desk' } } }
]))
print(result)
client.close()
example()
