Search document with empty array field, on ElasticSearch
If address is a mandatory field in location array you can modify your query:
"must_not": { "missing": { "field": "locations.address" }}AFAIK, in ES you cannot query non-leaf elements (like your location field) (see issue), and in case object types ES flattens the nested fields (see nested type, object type). That's why I suggested to query for one of the leaf elements instead. But it requires that one of them is mandatory (which is unfortunately not satisfied in your case).
Anyway I found the solution using the _source parameter inside the source_filtering:
"must_not": { "script": { "script": "_source.locations.size() > 0" }}Note that using "lang":"groovy" you should write: "script": "_source.locations.size > 0"
If you don't want to enable scripting, you can combine the Exists Query with a must_not bool query, e.g:
{ "query":{ "bool":{ "must_not":[ { "exists":{ "field":"tags" } } ] } }}
it looks like a similar question has been answered, I did not test the solution, but you could give it a try: >> elasticsearch filtering by the size of a field that is an array.