ArcPy.Mapping "Update Layer" - Support Definition Query

Idea created by Rachel_Lerm on Oct 12, 2010

    When using the UpdateLayer function in ArcPyMapping, please add a parameter for the definition_query.



    This parameter could be set to true, false.

    True - to update the definition query using the source_layer.
    False - to leave the definition query of the update_layer.


    This would allow the symbology of a layer to be updated, while leaving the existing definition query.
    This would be extremely useful in a mapbooks environment (a layer is used for different layouts/scale pages with different layer definition queries).