Elasticsearch - check if the parameter is not empty

Question

In SQL, we can perform the following in the where clause:

SELECT * FROM tbl WHERE :parameter <> '' OR :parameter is not null

Is this possible in elastic search to check if the input parameter/value is not null or empty? I checked the exists query but the parameter is a field, not a value.

Answer 1

You can use SQL API or using Exists Query.

Ex:

POST /_sql?format=txt
{
   "query": "SELECT * FROM bar WHERE Id <> '' AND Id is not null"
}