Zhongyi Pei created IOTDB-1962:
----------------------------------

             Summary: Much less items are returned
                 Key: IOTDB-1962
                 URL: https://issues.apache.org/jira/browse/IOTDB-1962
             Project: Apache IoTDB
          Issue Type: Bug
          Components: Client/Python
            Reporter: Zhongyi Pei
         Attachments: image-2021-11-08-17-18-03-734.png, 
image-2021-11-08-17-18-29-516.png, image-2021-11-08-17-19-57-198.png, 
image-2021-11-08-17-22-43-236.png, image-2021-11-08-17-23-16-781.png, 
image-2021-11-08-17-23-47-595.png

The following SQL shows that the number of items should be more than 30,000 
under such a time condition.

!image-2021-11-08-17-18-29-516.png!

 

However, if I use python client to resample the data, the number is much 
smaller and inconstant.

!image-2021-11-08-17-19-57-198.png!

Some results:

14096 rows are returned.

!image-2021-11-08-17-22-43-236.png!

18192 rows are returned.

!image-2021-11-08-17-23-16-781.png!

No row is returned.

!image-2021-11-08-17-23-47-595.png!



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