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https://issues.apache.org/jira/browse/CALCITE-3155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16875628#comment-16875628
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Julian Hyde commented on CALCITE-3155:
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With its use of the DUAL table, the fix is far too dependent on oracle. I would
like to see this problem solved for several databases simultaneously. I think
it would lead to better code structure.
> AssertionError in RelToSqlConverter when visiting empty Values node
> -------------------------------------------------------------------
>
> Key: CALCITE-3155
> URL: https://issues.apache.org/jira/browse/CALCITE-3155
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Musbah EL FIL
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Given the query:
> *select A."department_id" from "foodmart"."employee" A where
> A."department_id" = ( select min( A."department_id") from
> "foodmart"."department" B where 1=2 )*
> The conversion from SqlNode to RelNode is correct, however when going from
> RelNode to SqlNode, an exception was being thrown.
>
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