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Posted to notifications@iotdb.apache.org by "liaolanyu (Jira)" <ji...@apache.org> on 2022/01/11 10:31:00 UTC

[jira] [Created] (IOTDB-2354) row number is not as expected when using nested expressions containing count() function in 'group by time' clause

liaolanyu created IOTDB-2354:
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             Summary: row number is not as expected when using nested expressions containing count() function in 'group by time' clause
                 Key: IOTDB-2354
                 URL: https://issues.apache.org/jira/browse/IOTDB-2354
             Project: Apache IoTDB
          Issue Type: Bug
    Affects Versions: master branch
            Reporter: liaolanyu
            Assignee: liaolanyu


在使用包含group by time的嵌套表达式时，我们预期的是每个窗口的值都显示出来，包括null。但是当expression中包括count()时，或者我猜想是左右操作数中某一个值为null，另一个值不为null，最后结果为null时，这个窗口却被过滤掉了。



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