Hi everyone, I would like to start discussion about how to support time attribute in SQL DDL. In Flink 1.9, we already introduced a basic SQL DDL to create a table. However, it doesn't support to define time attributes. This makes users can't apply window operations on the tables created by DDL which is a bad experience.
In FLIP-66, we propose a syntax for watermark to define rowtime attribute and propose to use computed column syntax to define proctime attribute. But computed column is another big topic and should deserve a separate FLIP. If we have a consensus on the computed column approach, we will start computed column FLIP soon. FLIP-66: https://docs.google.com/document/d/1-SecocBqzUh7zY6HBYcfMlG_0z-JAcuZkCvsmN3LrOw/edit# Thanks for any feedback! Best, Jark
