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:documentationPath: /pipeline/transforms/
:language: en_US
:description: The Row Flattener transform allows you to flatten data sequentially.

= image:transforms/icons/flattener.svg[Row Flattener transform Icon, role="image-doc-icon"] Row Flattener

[%noheader,cols="3a,1a", role="table-no-borders" ]
|===
|
== Description

The Row Flattener transform allows you to flatten data sequentially.

|
== Supported Engines
[%noheader,cols="2,1a",frame=none, role="table-supported-engines"]
!===
!Hop Engine! image:check_mark.svg[Supported, 24]
!Spark! image:question_mark.svg[Maybe Supported, 24]
!Flink! image:question_mark.svg[Maybe Supported, 24]
!Dataflow! image:question_mark.svg[Maybe Supported, 24]
!===
|===


== Options

[options="header"]
|===
|Option|Description
|Transform name|Name of the transform; this name has to be unique in a single pipeline
|The field to flatten|The field that must be flattened into different target fields
|Target fields|The name of the target field to which the field is flattened
|===

== Example

In the sample below, if you begin with the following data set...

[options="header"]
|===
|Field1|Field2|Field3|Flatten
|A|B|C|One
|Z|Y|X|Two
|D|E|F|Three
|W|V|U|Four
|===

The data set can be flattened to the example shown below:

[options="header"]
|===
|Field1|Field2|Field3|Target1|Target2
|A|B|C|One|Two
|D|E|F|Three|Four
|===
