WARNING: Version 6.1 of Elasticsearch has passed its EOL date.

This documentation is no longer being maintained and may be removed. If you are running this version, we strongly advise you to upgrade. For the latest information, see the current release documentation.

› › ›

Lowercase Processor

edit

Lowercase Processor

edit

Converts a string to its lowercase equivalent.

Table 26. Lowercase Options

Name	Required	Default	Description
`field`	yes	-	The field to make lowercase
`target_field`	no	`field`	The field to assign the converted value to, by default `field` is updated in-place
`ignore_missing`	no	`false`	If `true` and `field` does not exist or is `null`, the processor quietly exits without modifying the document

{
  "lowercase": {
    "field": "foo"
  }
}

« KV Processor Remove Processor »