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https://issues.apache.org/jira/browse/CALCITE-5253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Evgeny Stanilovsky updated CALCITE-5253:
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Summary: Natural join fields validation partially broken after CALCITE-5171
(was: Join fields validation partially broken after CALCITE-5171)
> Natural join fields validation partially broken after CALCITE-5171
> ------------------------------------------------------------------
>
> Key: CALCITE-5253
> URL: https://issues.apache.org/jira/browse/CALCITE-5253
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.31.0
> Reporter: Evgeny Stanilovsky
> Assignee: Evgeny Stanilovsky
> Priority: Major
>
> Such issue is not possible for now:
> {code:java}
> CREATE TABLE t1(a INTEGER, b INTEGER, c INTEGER);
> CREATE TABLE t2(b INTEGER, c INTEGER, d INTEGER);
> CREATE TABLE t3(c INTEGER, d INTEGER, e INTEGER);
> SELECT t1.c, t2.d, t1.b, t1.a, t3.e FROM t1 natural join t2 natural join t3
> WHERE t1.a=1;
> {code}
> cause:
> {noformat}
> SqlValidatorException: Column name 'C' in NATURAL join or USING clause is not
> unique on one side of join
> {noformat}
> Was broken by:
> [1] https://issues.apache.org/jira/browse/CALCITE-5171
> So this is a regression.
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