def order_by_col_from_union(self):
        """target database supports ordering by a column from a SELECT
        inside of a UNION
        E.g.  (SELECT id, ...) UNION (SELECT id, ...) ORDER BY id
        """

        return exclusions.closed()

 def cross_schema_fk_reflection(self):
     return exclusions.closed()

 def independent_connections(self):
     return exclusions.closed()

 def precision_numerics_enotation_large(self):
     """target backend supports Decimal() objects using E notation
     to represent very large values."""
     return exclusions.closed()

    def time_microseconds(self):
        """target dialect supports representation of Python
        datetime.time() with microsecond objects."""

        return exclusions.closed()

 def returning(self):
     """target platform supports RETURNING."""
     return exclusions.closed()

 def server_side_cursors(self):
     """Target dialect must support server side cursors."""
     return exclusions.closed()

 def broken_cx_oracle6_numerics(self):
     return exclusions.closed()

 def schema_reflection(self):
     return exclusions.closed()

 def view_reflection(self):
     return exclusions.closed()

 def self_referential_foreign_keys(self):
     return exclusions.closed()

 def bound_limit_offset(self):
     """target database can render LIMIT and/or OFFSET using a bound
     parameter
     """
     return exclusions.closed()

 def offset(self):
     """target database can render OFFSET, or an equivalent, in a
     SELECT.
     """
     return exclusions.closed()

 def implements_get_lastrowid(self):
     """"target dialect implements the executioncontext.get_lastrowid()
         method without reliance on RETURNING."""
     return exclusions.closed()

 def empty_strings_varchar(self):
     """target database can persist/return an empty string with a
     varchar. """
     return exclusions.closed()

 def temp_table_names(self):
     """target dialect supports listing of temporary table names"""
     return exclusions.closed()

 def parens_in_union_contained_select_w_limit_offset(self):
     return exclusions.closed()

 def primary_key_constraint_reflection(self):
     return exclusions.closed()

 def floats_to_four_decimals(self):
     return exclusions.closed()

 def foreign_key_constraint_reflection(self):
     return exclusions.closed()