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Elastic Docs ›Elasticsearch Guide [5.3] ›Ingest Node ›Processors

Lowercase Processor

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Lowercase Processor

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Converts a string to its lowercase equivalent.

Table 25. Lowercase Options

Name Required Default Description

field

yes

-

The field to make lowercase

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"
  }
}
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