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Elastic Docs ›Elasticsearch Guide [8.2] ›Mapping ›Field data types

Binary field type

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Binary field type

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The binary type accepts a binary value as a Base64 encoded string. The field is not stored by default and is not searchable:

PUT my-index-000001
{
  "mappings": {
    "properties": {
      "name": {
        "type": "text"
      },
      "blob": {
        "type": "binary"
      }
    }
  }
}

PUT my-index-000001/_doc/1
{
  "name": "Some binary blob",
  "blob": "U29tZSBiaW5hcnkgYmxvYg==" 
}

The Base64 encoded binary value must not have embedded newlines \n.

Parameters for binary fields

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The following parameters are accepted by binary fields:

doc_values

Should the field be stored on disk in a column-stride fashion, so that it can later be used for sorting, aggregations, or scripting? Accepts true or false (default).

store

Whether the field value should be stored and retrievable separately from the _source field. Accepts true or false (default).

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