Services or capabilities described in AWS documentation might vary by Region. To see the differences applicable to the AWS European Sovereign Cloud Region, see the AWS European Sovereign Cloud User Guide.$tsSecond
New from version 8.0.1.
The $tsSecond operator in Amazon DocumentDB returns the seconds portion of a Timestamp value as a long integer (the Unix epoch seconds).
Parameters
Example (MongoDB Shell)
The following example demonstrates how to use the $tsSecond operator to extract the seconds portion from Timestamp values.
Create sample documents
db.events.insertMany([
{_id: 1, ts: Timestamp(1678900000, 1)},
{_id: 2, ts: Timestamp(1678900000, 2)},
{_id: 3, ts: Timestamp(1678900001, 1)}
]);
Query example
db.events.aggregate([
{ $project: { seconds: { $tsSecond: "$ts" } } }
]);
Output
[
{_id: 1, seconds: Long("1678900000")},
{_id: 2, seconds: Long("1678900000")},
{_id: 3, seconds: Long("1678900001")}
]
Code examples
To view a code example for using the $tsSecond operator, choose the tab for the language that you want to use:
- Node.js
-
const { MongoClient, Timestamp } = 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('events');
const result = await collection.aggregate([
{ $project: { seconds: { $tsSecond: "$ts" } } }
]).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['events']
result = list(collection.aggregate([
{'$project': {'seconds': {'$tsSecond': '$ts'}}}
]))
print(result)
finally:
client.close()
example()