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https://issues.apache.org/jira/browse/IOTDB-3263?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Yurong Su reassigned IOTDB-3263:
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Assignee: (was: Steve Yurong Su)
> Support filtering null in expressions for mpp cluster
> -----------------------------------------------------
>
> Key: IOTDB-3263
> URL: https://issues.apache.org/jira/browse/IOTDB-3263
> Project: Apache IoTDB
> Issue Type: Task
> Reporter: Steve Yurong Su
> Priority: Major
>
> Examples：
> select s1, s2 where s2 != null;
> select s1, s2 where s1 != null and s2 != null;
> select s1, s2 where s1 != null and s2 == null;
>
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