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https://issues.apache.org/jira/browse/CALCITE-5199?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhen Chen updated CALCITE-5199:
-------------------------------
    Summary: The leastRestrictiveStructuredType method should reserve the 
StructKind instead of override it to FULLY_QUALIFIED  (was: 
leastRestrictiveStructuredType should reserve the StructKind instead of 
override it to FULLY_QUALIFIED)

> The leastRestrictiveStructuredType method should reserve the StructKind 
> instead of override it to FULLY_QUALIFIED
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: CALCITE-5199
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5199
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>            Reporter: Wenrui Meng
>            Assignee: krooswu
>            Priority: Major
>              Labels: pull-request-available
>
> {code:java}
> protected @Nullable RelDataType leastRestrictiveStructuredType(
>     final List<RelDataType> types) {
>   final RelDataType type0 = types.get(0); {code}
> It ignores the struct kind from type0 but override it to FULLY_QUALIFIED. 
> I think it's better to keep the original struct kind. 



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