More and more SQL engines start supporting streaming functions, like TUMBLE(rowtime, INTERVAL '1' HOUR) described here https://calcite.apache.org/docs/stream.html#tumbling-windows-improved Is it possible to support parameter list like "rowtime, INTERVAL '1' HOUR"? Other functions like: DATE_ADD(input_value, INTERVAL quantity_expr unit_of_time) DATE_SUB(input_value, INTERVAL quantity_expr unit_of_time)