.. _auto_dataset_get_cell_value_keyvalue:

*GET THE CELL VALUE FROM GIVEN DATASET*
=======================================

Extracts a single cell value from a tabular dataset given a row and column index. The column may be addressed by zero-based integer position or by column name. Use this worker whenever you need to pull one scalar value out of a dataset for downstream processing.

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

Classification: **process**.

Tagged: ``cell_value``, ``dataset``, ``index``, ``keyvalue``, ``lookup``, ``scalar_extraction``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Dataset Name
     - datasetname
     - dataset
     - —
     - 
     - The input tabular dataset from which the cell value will be extracted; must be a structured dataset object available in the workflow context.
   * - Row Index
     - row_index
     - scalar
     - 0
     - 
     - Zero-based integer row index of the target cell (default: 0, i.e. the first row); leave at default to read from the first row.
   * - Col Index
     - col_index
     - scalar
     - 0
     - 
     - Zero-based integer column index or column name string of the target cell (default: 0, i.e. the first column); pass a column header string to address by name instead of position.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - dataset_get_cell_value_output_1
     - dataset_get_cell_value_output_1
     - keyvalue
     - Key-value pair containing the extracted cell value; the value is null if the addressed row/column combination does not exist in the dataset.

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

.. 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_get_cell_value_keyvalue</code>. Schema hash: <code>e331a7476801</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>