.. _auto_dataset_merge_dataset_column:

*DATASET MERGE DATASET COLUMN*
==============================

Merges (concatenates) the values of one or more selected columns within a dataset into a single combined column. Use this worker when you need to consolidate multiple dataset columns into one unified field for downstream processing.

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

Classification: **process**.

Tagged: ``column``, ``concatenate``, ``dataset``, ``merge``, ``transform``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Dataset
     - dataset_1
     - dataset
     - —
     - 
     - Input dataset containing the columns to be merged; connect any tabular dataset produced by an upstream worker.
   * - Columns to Merge
     - col_name
     - scalar
     - —
     - 
     - One or more column names from dataset_1 whose values will be merged together; select from the dynamic list populated by the connected dataset.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - Merged Dataset
     - merged_dataset
     - dataset
     - Resulting dataset with the selected columns merged into a single combined column, preserving all other original columns.

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

- 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=dataset_merge_dataset_column <https://www.d3view.com/api/workflow/example?id=dataset_merge_dataset_column>`_

.. raw:: html

   <hr style="margin-top:2em">
   <p style="font-size:11px;color:#888">
   Auto-generated from <code>transformation</code> schema. Worker id: <code>dataset_merge_dataset_column</code>. Schema hash: <code>0525ea92f96a</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>