Hi Yuhong, The design doc is not ready. You can refer FLINK-4679. There are some discussions under the issue.
- Jark Wu > 在 2017年1月6日，下午3:08，Hongyuhong <hongyuh...@huawei.com> 写道： > > Thanks Jark > > Do you have any design documents or instructions about row window? We are > interested in adding supports of window in streamsql side and it’s greate if > can have some reference. > Thanks very much. > > Best > Yuhong > > > 发件人: Jark Wu [mailto:wuchong...@alibaba-inc.com] > 发送时间: 2017年1月6日 11:01 > 收件人: user@flink.apache.org > 主题: Re: Som question about Flink stream sql > > Hi Yuhong, > > I have assigned an issue for tumble row-window, but the progress is still > under design and discuss. The implementation of row window is more complex > than group window. > I will push forward this issue in the next days. > > - Jark Wu > > 在 2017年1月5日，下午7:00，Hongyuhong <hongyuh...@huawei.com > <mailto:hongyuh...@huawei.com>> 写道： > > Hi Fabian, > > Thanks for the reply. > As you noticed, row windows are already supported by Calcite and FLIP-11 has > planned, > Can you tell something about the progress of the row windows in Table API? > > Regards. > Yuhong > > > > > 发件人: Fabian Hueske [mailto:fhue...@gmail.com <mailto:fhue...@gmail.com>] > 发送时间: 2017年1月5日 17:43 > 收件人: user@flink.apache.org <mailto:user@flink.apache.org> > 主题: Re: Som question about Flink stream sql > > Hi Yuhong, > > as you noticed, FLIP-11 is about the window operations on the Table API and > does not include SQL. > The reason is that the Table API is completely Flink domain, i.e., we can > design and implement the API. For SQL we have a dependency on Calcite. > > You are right, that Calcite's JIRA issue for group windows [1] seems to be > stale. I don't have more information on that. You could ping there and ask > what the status is. > Row windows are already supported by Calcite (SQL's OVER and WINDOW clauses), > so these could be implemented for SQL as well. > Maybe it's even easier to start from the SQL side and add the Table API later > to ensure a compatible compilation process. > > Best, Fabian > > > > 2017-01-05 4:40 GMT+01:00 Hongyuhong <hongyuh...@huawei.com > <mailto:hongyuh...@huawei.com>>: > Hi, > We are currently exploring on Flink streamsql , > And I see the group-window has been implemented in Table API, and row-window > is also planning in FLIP-11. It seems that row-window grammar is more similar > to calcite over clause. > I’m curious about the detail plan and roadmap of stream sql, cause FLIP-11 > just mentioned Table API. > And is that streamsql priority implement row-window? Or if group-window is > considered, what is the status on calcite integration? > The issue on calcite jira was raised in August, what’s the status right now? > Thanks in advance! > > Regards > Yuhong
