[shadow] Duplicate column name error when the MarkupField is used in an abstract Model

[trentm]

_This is a _shadow issue* for Issue 32 on Google Code (from which this project was moved).
Added 2009-11-26T17:37:11.000Z by George.N...@gmail.com. Closed (Invalid).
Labels: Type-Defect, Priority-Medium.
Please make updates to the bug there.*

Original description

Consider two Models (News & Article) that derive from an abstract model
(Content). The MarkupField is set to two fields (summary & body) in the
abstract Model (Content). Then when running 'syncdb' I get the followijng
error:

_mysql_exceptions.OperationalError: (1060, "Duplicate column name
'_summary_rendered'")

A wild guess would be to include the Model's class name in the _rendered field.