ExpressionBase
--------------

The SDTL types in  ExpressionBase are used in expressions, which may be numeric, text or logical. 


Properties
~~~~~~~~~~

This type contains no properties.


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

* **ExpressionBase**
    * :doc:`/composite-types/BooleanConstantExpression/index`
    * :doc:`/composite-types/DateTimeConstant/index`
    * :doc:`/composite-types/FunctionCallExpression/index`
    * :doc:`/composite-types/GroupedExpression/index`
    * :doc:`/composite-types/IteratorSymbolExpression/index`
    * :doc:`/composite-types/MissingValueConstantExpression/index`
    * :doc:`/composite-types/NumberRangeExpression/index`
    * :doc:`/composite-types/NumericConstantExpression/index`
    * :doc:`/composite-types/NumericMaximumValueExpression/index`
    * :doc:`/composite-types/NumericMinimumValueExpression/index`
    * :doc:`/composite-types/StringConstantExpression/index`
    * :doc:`/composite-types/StringRangeExpression/index`
    * :doc:`/composite-types/TimeDurationConstant/index`
    * :doc:`/composite-types/UnhandledValuesExpression/index`
    * :doc:`/composite-types/ValueListExpression/index`
    * :doc:`/composite-types/VariableReferenceBase/index`


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

* :doc:`/composite-types/AppendFileDescription/index`
* :doc:`/composite-types/CompositeVariableNameExpression/index`
* :doc:`/composite-types/Compute/index`
* :doc:`/composite-types/DoIf/index`
* :doc:`/composite-types/DropCases/index`
* :doc:`/composite-types/FunctionArgument/index`
* :doc:`/composite-types/GroupedExpression/index`
* :doc:`/composite-types/IfRows/index`
* :doc:`/composite-types/IteratorDescription/index`
* :doc:`/composite-types/KeepCases/index`
* :doc:`/composite-types/LoopWhile/index`
* :doc:`/composite-types/MergeFileDescription/index`
* :doc:`/composite-types/NumberRangeExpression/index`
* :doc:`/composite-types/RecodeRule/index`
* :doc:`/composite-types/ReshapeItemDescription/index`
* :doc:`/composite-types/SetMissingValues/index`
* :doc:`/composite-types/ValueListExpression/index`

.. container:: image

   |stub|

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