TYPESCRIPT

exists query elasticsearch 5.4

GET /_search
{
    "query": {
        "exists": {
            "field": "user"
        }
    }
}

exists query elasticsearch 5.4

GET /_search
{
    "query": {
        "bool": {
            "must_not": {
                "exists": {
                    "field": "user"
                }
            }
        }
    }
}