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https://issues.apache.org/jira/browse/CALCITE-544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde updated CALCITE-544:
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Issue Type: Sub-task (was: Bug)
Parent: CALCITE-418
> Implement Union in Interpreter
> ------------------------------
>
> Key: CALCITE-544
> URL: https://issues.apache.org/jira/browse/CALCITE-544
> Project: Calcite
> Issue Type: Sub-task
> Reporter: Julian Hyde
> Assignee: Julian Hyde
> Labels: newbie
>
> Interpreter can handle scan, filter, project, values and (with CALCITE-543)
> aggregate. This task would add union.
> You probably need to add a method {{public void visit(Union union)}} to
> {{CoreCompiler}}. Add tests to InterpreterTest for union and union all.
> This is a good task for a beginner (as evidenced by the "newbie" label).
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