Remove field from collection in RavenDB Studio

I am trying to remove a property (whose addition to the documents I asked for help with, see here ), using RavenDB Studio (I accidentally added them to the wrong database collection...).

Again, I'm stuck on the syntax. Also - I can't believe nobody has had the intention of doing this until now - at least intense googling couldn't produce anything useful. The official documentation is also terse on this subject, to say the least. Aside: Why is DDL in RavenDB (and presumably other NoSQL DBs) so cumbersome ?

I tried various versions of

from things  as t
update {
    delete t.field 
}

none of which work, and some of them don't even compile.

With Patching - removing a document field can be done this way from the Client code:

Single document:

session.Advanced.Defer(new PatchCommandData(
    id: "yourDocumentID",
    changeVector: null,
    patch: new PatchRequest
    {
        Script = @"delete this.fieldToDelete"
    },
    patchIfMissing: null));

session.SaveChanges();

See: Patching - Removing Property

Multiple documents:

var operation = store
    .Operations
    .Send(new PatchByQueryOperation("from things update { delete this.field; }"));

operation.WaitForCompletion();

Example was taken from here

For RQL simply use:

from things 
update { 
   delete this.field; 
}