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[Docs] Add warning of incomplete Kibana support to nested fields #107971

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May 13, 2024
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[Docs] Add warning of incomplete Kibana support to nested fields #107971

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2 changes: 2 additions & 0 deletions docs/reference/mapping/types/nested.asciidoc
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Expand Up @@ -11,6 +11,8 @@ independently of each other.
TIP: When ingesting key-value pairs with a large, arbitrary set of keys, you might consider modeling each key-value pair as its own nested document with `key` and `value` fields. Instead, consider using the <<flattened,flattened>> data type, which maps an entire object as a single field and allows for simple searches over its contents.
Nested documents and queries are typically expensive, so using the `flattened` data type for this use case is a better option.

WARNING: Nested fields have incomplete support in Kibana. While they are visible and searchable in Discover, they cannot be used to build visualizations in Lens.

[[nested-arrays-flattening-objects]]
==== How arrays of objects are flattened

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