Thanks Jark for bring up this topic, this is definitely an import feature for the SQL, especially the DDL users.
I would spend some time to review this design doc, really thanks. Best, Danny Chan 在 2019年9月6日 +0800 AM11:19，Jark Wu <imj...@gmail.com>，写道： > 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
