Thanks Jark for this topic, This will be very useful.
Best, ForwardXu Danny Chan <yuzhao....@gmail.com> 于2019年9月6日周五 上午11:26写道： > 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 >
