Method _modify

test/engine/test_execute.py:2214–2218

(
            conn, clauseelement, multiparams, params, execution_options
        )

        @event.listens_for(connection, "before_execute", retval=True)
        def _modify(
            conn, clauseelement, multiparams, params, execution_options
        ):
            m1.run_event()
            return clauseelement.replace("hi", "there"), multiparams, params

        # the event does not take effect for the "driver SQL" option
        eq_(connection.exec_driver_sql("select 'hi'").scalar(), "hi")