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https://issues.apache.org/jira/browse/CALCITE-2227?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde resolved CALCITE-2227.
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Resolution: Fixed
Fix Version/s: 1.17.0
Fixed in
[92f7259b|http://git-wip-us.apache.org/repos/asf/calcite/commit/92f7259b].
> "SELECT *" in a NATURAL JOIN and JOIN USING query should output join columns
> only once
> --------------------------------------------------------------------------------------
>
> Key: CALCITE-2227
> URL: https://issues.apache.org/jira/browse/CALCITE-2227
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Julian Hyde
> Priority: Major
> Fix For: 1.17.0
>
>
> "SELECT *" in a NATURAL JOIN and JOIN USING query should output join columns
> only once.
> For example,
> {code:java}
> SELECT * FROM Emp NATURAL JOIN Dept{code} should give columns {deptno, empno,
> ename, dname}. Note that deptno, the join key, has been moved to the start of
> the list only occurs once.
> This behavior is specified in the SQL standard. I don't know how I missed it.
> For outer joins, the value is coalesce(left.key, right.key) therefore never
> null.
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