Deleting all documents in Firestore collection

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I'm looking for a way to clear an entire collection. I saw that there is a batch update option, but that would require me to know all of the document IDs in the collection.

I'm looking for a way to simply delete every document in the collection.

Thanks!

Edit: Answer below is correct, I used the following:

  func delete(collection: CollectionReference, batchSize: Int = 100) {
    // Limit query to avoid out-of-memory errors on large collections.
    // When deleting a collection guaranteed to fit in memory, batching can be avoided entirely.
    collection.limit(to: batchSize).getDocuments { (docset, error) in
      // An error occurred.
      let docset = docset

      let batch = collection.firestore.batch()
      docset?.documents.forEach { batch.deleteDocument($0.reference) }

      batch.commit {_ in
        self.delete(collection: collection, batchSize: batchSize)
      }
    }
  }

There is no API to delete an entire collection (or its contents) in one go.

From the Firestore documentation:

To delete an entire collection or subcollection in Cloud Firestore, retrieve all the documents within the collection or subcollection and delete them. If you have larger collections, you may want to delete the documents in smaller batches to avoid out-of-memory errors. Repeat the process until you've deleted the entire collection or subcollection.

There is even a Swift sample in that documentation, so I recommend you try it.

The documentation for the Firebase CLI seems to hint that it's possible to delete an entire collection with a single command, but I haven't tried this myself. If this would suit your needs, I recommend you check out the (sparse) documentation for the firestore:delete command.

Delete Collections and Subcollections, To delete an entire collection or subcollection in Cloud Firestore, retrieve all the documents within the collection or subcollection and delete them. If you have larger collections, you may want to delete the documents in smaller batches to avoid out-of-memory errors. Solution: Delete data with a Callable Cloud Function. Cloud Function. Client Invocation. Limitations. Deleting data in Cloud Firestore, especially from a resource-limited mobile app, can be


There is now an option in the firebase CLI to delete an entire firestore database:

firebase firestore:delete --all-collections

Deleting all documents in Firestore collection, To delete all documents from a Firebase collection in Firestore we need to get the collection, iterate over its elements and delete each one of  Deleting data in Cloud Firestore, especially from a resource-limited mobile app, can be difficult to implement correctly for the following reasons: There is no operation that atomically deletes a


The following javascript function will delete any collection:

deleteCollection(path) {
    firebase.firestore().collection(path).listDocuments().then(val => {
        val.map((val) => {
            val.delete()
        })
    })
}

This works by iterating through every document and deleting each.

Alternatively, you can make use of Firestore's batch commands and delete all at once using the following function:

deleteCollection(path) {
    // Get a new write batch
    var batch = firebase.firestore().batch()

    firebase.firestore().collection(path).listDocuments().then(val => {
        val.map((val) => {
            batch.delete(val)
        })

        batch.commit()
    })
}

How to delete all documents from a collection in Firebase firestore?, Hi, Here is my code. var jobskill_ref = db.collection('job_skills').where('job_id','==',​post.job_id); jobskill_ref.delete(); Error which i am receiving  To delete an entire collection or subcollection in Cloud Firestore, retrieve all the documents within the collection or subcollection and delete them. If you have larger collections, you may want to delete the documents in smaller batches to avoid out-of-memory errors. Repeat the process until you've deleted the entire collection or subcollection. There is even a Swift sample in that documentation, so I recommend you try it.


Tested in VueJS

db.collection(path).onSnapshot(snapshot => {
    snapshot.docs.forEach(doc => {
        ref.doc(doc.id).delete()
        .catch(error => {
            console.log(error)
        })
    })
})

How to delete multiple document from firestore using where clause , to contain your various users, each represented by a document: collections_bookmark users. To delete an entire collection or subcollection in Cloud Firestore, retrieve all the documents within the collection or subcollection and delete them. If you have larger collections, you may want


You have to get all the documents then use batch to delete them in bulk P.S. i prefer try...catch syntax

    let deleteInBatch = async (query, size = 100) => {
    try{

        let batch = firestore().batch();

        //get documents
        let values = await query.get();
        if(values.size>0){
            values.foreach(value=> {
                batch.delete(value.ref);
            })

            //Delete the documents in bulk
            batch.commit();
            if(values.size>0){
                //Recusively call the function again to finish
                //deleting the rest of documents
                deleteInBatch(query,size);
            }
        }else{
            //exist function
            return;
        }
    }catch(err){
        throw err;
    }
}

Cloud Firestore Data model, Deleting an entire collection from Firestore should be handled on a backend server. Collections can grow infinitely large, so deleting a millions of documents can  The names of documents within a collection are unique. You can provide your own keys, such as user IDs, or you can let Cloud Firestore create random IDs for you automatically. You do not need to


Delete a Firestore Collection, However, you can do it using it the Firebase CLI: firebase firestore:delete --all-​collections -y. This command will delete your entire database. A Cheat Sheet for Firestore to manipulate data.. “[Firebase] Cloud Firestore — Add, Set, Update, Delete Get data” is published by Aaron Lu.


How to delete all the data from your Firestore database, Executing firebase firestore:delete --all-collections produces the following output: You are about to delete YOUR ENTIRE DATABASE. Are you sure? Yes Deleting​  Sharing a function to delete all documents in named collections, by batches. It returns a promise with total number of deleted documents. It does not delete subcollections. Internally, uses rxjs to do the magic of streaming and batching values to be deleted.


How to Delete all documents in collection in Firestore with Flutter , If everything goes well, you should have a collection called users with five documents. add-  By default, Cloud Firestore retrieves all documents that satisfy the query in ascending order by document ID, but you can order and limit the data returned. Get all documents in a collection. In addition, you can retrieve all documents in a collection by omitting the where() filter entirely: