MissingValueConstantExpression
------------------------------

A missing value constant.  Some languages allow multiple missing value constants.


Properties
~~~~~~~~~~

.. csv-table::
   :header: "Name","Type","","Description"
   :widths: 15,10,5,100

   "Value","`string <https://cogsdata.org/docs/modeler-guide/primitive-types/#string>`_","0..1","The missing value as it appears in the system (e.g., .a, .b, .c).  If Null, this is the system missing value."

Properties Inherited from ExpressionBase
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

No properties are inherited.


Item Type Hierarchy
~~~~~~~~~~~~~~~~~~~

* :doc:`/composite-types/ExpressionBase/index`
    * **MissingValueConstantExpression**


Relationships
~~~~~~~~~~~~~
The following identified item types reference this type.

.. container:: image

   |stub|

.. |stub| image:: ../../images/MissingValueConstantExpression.svg