.. _auto_keyvalue_unique:

*RETURN THE UNIQUE KEY VALUES FROM THE GIVEN RESPONSE*
======================================================

Extracts all unique values from a specified column of a key-value response object. Use this worker when you need a deduplicated set of values from a particular field in a structured response, for example to enumerate distinct categories or identifiers.

When to use
-----------

Classification: **process**.

Tagged: ``column``, ``deduplicate``, ``keyvalue``, ``response``, ``set``, ``unique``.

Inputs
------

.. list-table::
   :header-rows: 1
   :widths: 20 20 20 20 20 20

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Response
     - response
     - keyvalue
     - —
     - 
     - Key-value response object (d3VIEW keyvalue type) from which unique values will be extracted; connect the upstream response output here.
   * - Column Name
     - column_name
     - scalar
     - —
     - 
     - Name of the column (field key) within the response whose values should be deduplicated; provide as a quoted string matching the exact column label.

Outputs
-------

.. list-table::
   :header-rows: 1
   :widths: 20 20 20 20

   * - Label
     - ID
     - Type
     - Description
   * - keyvalue_unique_output_1
     - keyvalue_unique_output_1
     - set
     - A set (deduplicated collection) of all unique values found in the specified column of the input response.

Disciplines
-----------

- cae.postprocessing.response
- data.dataset.transform

Runnable example
----------------

A runnable example is registered for this worker. Open the example workflow on the d3VIEW canvas: `/api/workflow/example?id=keyvalue_unique <https://www.d3view.com/api/workflow/example?id=keyvalue_unique>`_

.. raw:: html

   <hr style="margin-top:2em">
   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>keyvalue_unique</code>. Schema hash: <code>13c14492653c</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>