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$bitOr
New from version 8.0.1.
The $bitOr operator in Amazon DocumentDB performs a bitwise OR operation on integer or long values.
Parameters
Example (MongoDB Shell)
The following example shows how to use the $bitOr operator to perform bitwise OR on two fields.
Create sample documents
db.flags.insertMany([
{_id: 1, a: 13, b: 10},
{_id: 2, a: 7, b: 5},
{_id: 3, a: 15, b: 9}
]);
Query example
db.flags.aggregate([
{ $project: { result: { $bitOr: ["$a", "$b"] } } }
]);
Output
[
{_id: 1, result: 15},
{_id: 2, result: 7},
{_id: 3, result: 15}
]
In binary: 13 (1101) OR 10 (1010) = 15 (1111); 7 (0111) OR 5 (0101) = 7 (0111); 15 (1111) OR 9 (1001) = 15 (1111).
Code examples
To view a code example for using the $bitOr operator, choose the tab for the language that you want to use:
- Node.js
-
const { MongoClient } = require('mongodb');
async function example() {
const client = new MongoClient('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false');
try {
await client.connect();
const db = client.db('test');
const collection = db.collection('flags');
const result = await collection.aggregate([
{ $project: { result: { $bitOr: ["$a", "$b"] } } }
]).toArray();
console.log(result);
} finally {
await client.close();
}
}
example();
- Python
-
from pymongo import MongoClient
def example():
client = MongoClient('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false')
try:
db = client['test']
collection = db['flags']
result = list(collection.aggregate([
{'$project': {'result': {'$bitOr': ['$a', '$b']}}}
]))
print(result)
finally:
client.close()
example()