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09e999808a
Fixed issue where using :meth:`_schema.Table.to_metadata` (called :meth:`_schema.Table.tometadata` in 1.3) in conjunction with a PostgreSQL :class:`_postgresql.ExcludeConstraint` that made use of ad-hoc column expressions would fail to copy correctly. Fixes: #5850 Change-Id: I062480afb23f6f60962b7b55bc93f5e4e6ff05e4