Hi, Great work! Eric Pai <[email protected]> 于2021年12月27日周一 17:00写道：
> Excellent work! Now our query is more completed and can support more real > world requirements! Besides the feature, the GroupByFillDataSet is almostly > decoupled from GroupByEngineDataSet. Now I can develop the UDF nesting > aggregations in GROUP BY FILL query easily __ > > 在 2021/12/27 下午4:54，“Mr.Crazy”<[email protected]> 写入: > > Hi! > I'm working on Group By Fill Query these days, to enrich the > capabilities of group by fill. Formerly, group by fill only support > last_value aggregation using PreviousFill. But now group by fill supports > all aggregation functions and fill methods! I modified the fill syntax and > GroupByFillDataSet to make this feature work, you can get an overview of > the changes below. > Firstly, our old fill syntax perform Fill by specifying the > fill method for each type. But specifying multiple fill methods in a single > SQL can impose a significant logic burden of GroupByFill. So we simplify > the fill syntax from FILL(<data_type>(fill_method)(, > <data_type>(fill_method))*) to FILL(fill_method) (on Previous or Linear > fill) and FILL(constant) (on Value Fill). While the old syntax can be > compatible. You should notice that even the old fill syntax doesn't allow > for multiple fill methods in a single SQL. > You can get more information of fill syntax updates from our > UserGuide in master branch. Click here for English version. > The GroupByFillDataSet is also rebuilt for supporting new > feature. You can see this doc for new group by fill examples and get > more rebuilt details. > > Rongzhao Chen > School of Software, Tsinghua university > > -- Best, Xiangwei Wei
