gistfile1.txt

curl -XPUT 'http://localhost:9200/exists/'

curl -XPUT 'http://localhost:9200/exists/obj1/_mapping' -d '{
  "obj1": {
    "properties": {
      "testtext": {
        "type": "string",
        "index_name": "1.testtext",
        "analyzer": "standard"
      }
    }
  }
}'

curl -XPUT 'http://localhost:9200/exists/obj2/_mapping' -d '{
  "obj2": {
    "properties": {
      "testtext": {
        "type": "string",
        "index_name": "2.testtext",
        "analyzer": "standard"
      }
    }
  }
}'

curl -XPUT localhost:9200/exists/obj1/1 -d '{ "id": "1", "testtext": [ "foo" ]}'
curl -XPUT localhost:9200/exists/obj2/2 -d '{ "id": "2", "testtext": [ "bar" ]}'



GET _search
{
  "query": {
    "filtered": {
      "query": {
        "query_string": {
          "query": "_exists_: testtext"
        }
      }
    }
  }
}