def visit_drop_sequence(self, drop):

        if self.dialect._version_two:
            return "DROP SEQUENCE %s" % \
                self.preparer.format_sequence(drop.element)
        else:
            return "DROP GENERATOR %s" % \
                self.preparer.format_sequence(drop.element)
Generate a ``DROP GENERATOR`` statement for the sequence.
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/dialects/firebird/base.py/FBDDLCompiler.visit_drop_sequence