Create Elasticsearch curl query for not null and not empty(“”)

Question

How can i create Elasticsearch curl query to get the field value which are not null and not empty(\"\"),

Here is the mysql query:

select field1 from          


        

Answer 1

Here's the query example to check the existence of multiple fields:

{
  "query": {
    "bool": {
      "filter": [
        {
          "exists": {
            "field": "field_1"
          }
        },
        {
          "exists": {
            "field": "field_2"
          }
        },
        {
          "exists": {
            "field": "field_n"
          }
        }
      ]
    }
  }
}