How do I create a boolean "OR" filter?

Elastic Stack Elasticsearch
2

You can use the should clause to create and OR filter

Here is a complete example

DELETE discuss-test

PUT discuss-test
{
  "mappings": {
    "properties": {
      "type": {
        "type": "keyword"
      },
      "gender": {
        "type": "keyword"
      },
      "name": {
        "type": "keyword"
      }
    }
  }
}


POST discuss-test/_doc
{
  "type" : "feline",
  "gender" : "male",
  "name" : "chuck"
}

POST discuss-test/_doc
{
  "type" : "feline",
  "gender" : "female",
  "name" : "mary"
}

POST discuss-test/_doc
{
  "type" : "canis",
  "gender" : "male",
  "name" : "spot"
}

POST discuss-test/_doc
{
  "type" : "canis",
  "gender" : "female",
  "name" : "mary"
}

Now the query


# This is the equivalent of an OR filter with should 
GET discuss-test/_search
{
  "query": {
    "bool": {
      "should": [ <! -- This mean OR, must means AND
        {
          "term": {
            "type": {
              "value": "canis"
            }
          }
        },
        {
                  "term": {
            "name": {
              "value": "mary"
            }
          }
        }
      ]
    }
  }
}

and the resulting OR.


{
  "took" : 21,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 3,
      "relation" : "eq"
    },
    "max_score" : 1.3862942,
    "hits" : [
      {
        "_index" : "discuss-test",
        "_type" : "_doc",
        "_id" : "U6tJdXsBm1AJFmUV717P",
        "_score" : 1.3862942,
        "_source" : {
          "type" : "canis",
          "gender" : "female",
          "name" : "mary"
        }
      },
      {
        "_index" : "discuss-test",
        "_type" : "_doc",
        "_id" : "UatJdXsBm1AJFmUV716l",
        "_score" : 0.6931471,
        "_source" : {
          "type" : "feline",
          "gender" : "female",
          "name" : "mary"
        }
      },
      {
        "_index" : "discuss-test",
        "_type" : "_doc",
        "_id" : "UqtJdXsBm1AJFmUV7162",
        "_score" : 0.6931471,
        "_source" : {
          "type" : "canis",
          "gender" : "male",
          "name" : "spot"
        }
      }
    ]
  }
}