apache / apache/iotdb

why UDAF function "Median" can not work with "group by"

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Description

Version: 1.0.0

IoTDB> select Median(temperature) from root.iot.wf0abcdefsjdfksjfkjsd001.ksjfisfisjfjsf001 group by ([2023-02-08, 2023-02-09T23:00:00),1m);
Msg: 701: Common queries and aggregated queries are not allowed to appear at the same time

Contributor guide

Open the contributing guide

Research direction

Reproduce the reported Median query with GROUP BY in IoTDB 1.0.0 and start by tracing the query validation that emits error 701 for common and aggregated queries. Identify the handling of UDAF Median with grouped time windows; done when the query executes and returns grouped median results without the reported error.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
databases
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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