[ 
https://issues.apache.org/jira/browse/CALCITE-1430?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jiarong Wei updated CALCITE-1430:
---------------------------------
    Description: When {{segmentGranularity}} is coarse, all data may be fit 
into just one segment. But 
[it|https://github.com/apache/calcite/blob/master/druid/src/main/java/org/apache/calcite/adapter/druid/DruidConnectionImpl.java#L192]
 should not assume there's only one segment, so {{pagingIdentifiers}} may have 
more than one value.  (was: In 
[code|https://github.com/apache/calcite/blob/master/druid/src/main/java/org/apache/calcite/adapter/druid/DruidConnectionImpl.java#L192],
 it presumes {{pagingIdentifiers}} just has one value but actually not.)

> Error of deciding pagingIdentifiers in select query for Druid
> -------------------------------------------------------------
>
>                 Key: CALCITE-1430
>                 URL: https://issues.apache.org/jira/browse/CALCITE-1430
>             Project: Calcite
>          Issue Type: Bug
>          Components: druid
>            Reporter: Jiarong Wei
>            Assignee: Julian Hyde
>
> When {{segmentGranularity}} is coarse, all data may be fit into just one 
> segment. But 
> [it|https://github.com/apache/calcite/blob/master/druid/src/main/java/org/apache/calcite/adapter/druid/DruidConnectionImpl.java#L192]
>  should not assume there's only one segment, so {{pagingIdentifiers}} may 
> have more than one value.



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