Find empty strings in elasticsearch

Question

I\'m trying to _search documents that has some specific value in the field.

{
  \"query\": {
      \"bool\": {
        \"must\": [
         {\"f         


        

Answer 1

Or another way to do the same thing more efficiently is to use the exists filter:

"exists" : {
  "field" : "advs.status"
}

Both are valid, but this one is better :)