Ordering and limiting Firestore queries with a filter

Ordering and limiting Firestore queries with a filter

Explore further

For detailed documentation that includes this code sample, see the following:

• Order and limit data
• Order and limit data with Cloud Firestore

Code sample

C#

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

Query query = citiesRef
    .WhereGreaterThan("Population", 2500000)
    .OrderBy("Population")
    .Limit(2);

Go

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

query := cities.Where("population", ">", 2500000).OrderBy("population", firestore.Desc).Limit(2)

Java

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

Query query = cities.whereGreaterThan("population", 2500000L).orderBy("population").limit(2);

Node.js

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

const biggestRes = await citiesRef.where('population', '>', 2500000)
  .orderBy('population').limit(2).get();

PHP

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

$query = $citiesRef
    ->where('population', '>', 2500000)
    ->orderBy('population')
    ->limit(2);

Python

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

cities_ref = db.collection("cities")
query = (
    cities_ref.where(filter=FieldFilter("population", ">", 2500000))
    .order_by("population")
    .limit(2)
)
results = query.stream()

Ruby

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

query = cities_ref.where("population", ">", 2_500_000).order("population").limit(2)

What's next

To search and filter code samples for other Google Cloud products, see the Google Cloud sample browser.