how to execute query for Memcached Buckets

As I know I can use view to execute query for couchbase buckets

such as

function (doc, meta) {
  if (doc.type && doc.type == "beer" && doc.name) {    
     emit(doc.name, null);
  }
}

but there is no option in Memcached Buckets

enter image description here

Your comment welcome

Memcache buckets does not support persistence. Views are in fact materialized index, stored on the disk. So everything is correct on your screenshots: it is not possible to query memory-only buckets.