Return the most recent record from ElasticSearch index

Question

I would like to return the most recent record (top 1) from ElasticSearch index similar to the sql query below;

SELECT         


        

Answer 1

For information purpose, _timestamp is now deprecated since 2.0.0-beta2. Use date type in your mapping.

A simple date mapping JSON from date datatype doc:

{
  "mappings": {
     "my_type": {
        "properties": {
          "date": {
          "type": "date" 
        }
      }
    }
  }
}

You can also add a format field in date:

{
  "mappings": {
    "my_type": {
      "properties": {
        "date": {
          "type":   "date",
          "format": "yyy-MM-dd HH:mm:ss||yyyy-MM-dd||epoch_millis"
        }
      }
    }
  }
}