.. _auto_keyvalue_value_sum:

*COMPUTE THE SUM OF ALL THE VALUES IN THE KEYVALUE*
===================================================

Computes the arithmetic sum of all numeric values stored in a key-value map. Use this worker whenever you need a single scalar total from a flat key-value collection inside a workflow.

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

Classification: **process**.

Tagged: ``aggregation``, ``keyvalue``, ``scalar``, ``sum``, ``transform``.

Inputs
------

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

   * - Label
     - ID
     - Type
     - Default
     - Required
     - Description
   * - Keyvalue 1
     - kv1
     - keyvalue
     - —
     - 
     - Input key-value map whose numeric values will be summed; all values must be numeric (or castable to numeric) — leave empty/optional if no map is available and the worker will return zero.

Outputs
-------

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

   * - Label
     - ID
     - Type
     - Description
   * - keyvalue_value_sum_output_1
     - keyvalue_value_sum_output_1
     - scalar
     - Scalar total equal to the arithmetic sum of all values in the input key-value map; dimensionless and unitless unless the source values carry implicit units.

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

- data.dataset.transform
- data.statistics

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

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

.. 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_value_sum</code>. Schema hash: <code>4f85192c8df9</code>. Hand-curated docs in <code>workerexamples/</code> override this page when present.
   </p>