Github user snuyanzin commented on the issue:
https://github.com/apache/flink/pull/6007
@walterddr thank you for your comment
it is just DOW implementation because to implement EPOCH we have to wait
for CALCITE-2303 resolution
about DECADE - there are 2 ways: one is also to wait for CALCITE-2303
another one is to do the same changes in
_org.apache.calcite.avatica.util.DateTimeUtils#julianExtract_ (Flink has its
own version of this class) as proposed in CALCITE-2303 and then do other stuff
in Flink
---
