In SQLite, I have a db view which selects from a second db view.  When
accessing this view as a sqlalchemy Table with autoload, the fields
are being treated as Decimal.  This raises an InvalidOperation
exception when I attempt to access a varchar value.
When I have a view selecting from table fields (tables created with
sqlalchemy) instead of another view, this problem does not occur.  Why
is the type information being lost in multiple layers of views?

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