Hi, I would like to add support in the SqlImplementor class for the Nulls First/Nulls Last feature that has been recently added to Hive.https://issues.apache.org/jira/browse/HIVE-12994
I know that i need to modify the method "addOrderItem", however I also realize that if I do so, i will break the compatibility for versions of Hive that are less that 2.1.0 (since the feature was added only in 2.1.0) I also know that there is an active PR https://issues.apache.org/jira/browse/CALCITE-1913which attempts to add a version field in the SqlDialect However, it seems that it will take time to complete. What do you think I should do? Should i go ahead and add the "null direction" feature for Hive without consideration for backward compatibility? ThanksAbbas Gadhia
