QueryCondition
==============

The ``QueryCondition`` class is a data structure representing one condition when querying data using the :doc:`Query </Callables/Implementations/Extractors/Query>` Callable.

Definition
----------

.. py:class:: QueryCondition(field, operator, value)

    :param field: The field to compare data with. A field string **must** follow the format of ``table.field``.
    :param operator: The operator to use when comparing data.
    :param value: The value to compare the selected field with. This **cannot** be a column reference. The value type is inferred.
        The pipeline runner will try to convert the value to a suitable type according to the following order: ``double`` > ``int`` > ``boolean`` > ``string``

Configuration
-------------

A ``QueryCondition`` object has the following representation in JSON:

.. code-block:: javascript 

    { 
        "field": "field",
        "operator": "operator",
        "value": "value"
    }