use oracle.INTERVAL for generic interval
Fixed issue in :class:`.Interval` datatype where the Oracle implementation
was not being used for DDL generation, leading to the ``day_precision`` and
``second_precision`` parameters to be ignored, despite being supported by
this dialect. Pull request courtesy Indivar.
Fixes: #10509
Closes: #10513
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/10513
Pull-request-sha:
a3b901978504b1bc726f722fc27ca4827de05274
Change-Id: I074afeeac182567f9104c5175b81c735d87e1352