[jira] [Assigned] (IOTDB-2590) group by [interval, step], allow step and interval to be small, and there can be overlapping Windows

["Minghui Liu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IOTDB-2590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Minghui Liu reassigned IOTDB-2590:
----------------------------------

    Assignee: Minghui Liu

> group by [interval, step], allow step and interval to be small, and there can be overlapping Windows
> ----------------------------------------------------------------------------------------------------
>
>                 Key: IOTDB-2590
>                 URL: https://issues.apache.org/jira/browse/IOTDB-2590
>             Project: Apache IoTDB
>          Issue Type: New Feature
>            Reporter: gongning
>            Assignee: Minghui Liu
>            Priority: Major
>
> group by 【interval， step】，允许 step 小于 interval ，可有重叠窗口
> 比如： select count(status), max_value(temperature) from root.ln.wf01.wt01 group by ([2017-11-01T00:00:00, 2017-11-07T23:00:00), 60,15m);
> 按60分钟开窗，支持15分钟滑窗。当前step 必须要大于等于 interval。



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