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https://issues.apache.org/jira/browse/IGNITE-22306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maksim Zhuravkov updated IGNITE-22306:
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Summary: Sql. NATURAL JOIN. Column name when encountered more than once
must be ambiguous. (was: Sql. NATURAL join. Column name when encountered more
than once must be ambiguous.)
> Sql. NATURAL JOIN. Column name when encountered more than once must be
> ambiguous.
> ---------------------------------------------------------------------------------
>
> Key: IGNITE-22306
> URL: https://issues.apache.org/jira/browse/IGNITE-22306
> Project: Ignite
> Issue Type: Bug
> Components: sql
> Reporter: Maksim Zhuravkov
> Priority: Major
> Labels: ignite-3
> Fix For: 3.0.0-beta2
>
>
> Query:
> {noformat}
> select * from (values (1)) t1(i) join (values (1)) t2(i) on (t1.i=t2.i)
> natural join (values (1)) t3(i);
> {noformat}
> Should return an error because the left table of the outermost join consists
> of two columns named "i".
> *Query breakdown*
> Q1 (wrapped in select )
> {noformat}
> select * from (
> (values (1)) t1(i) join (values (1)) t2(i) on (t1.i=t2.i)
> ) q1
> # returns i, i
> # 1, 1
> {noformat}
> Q2 (wrapped in select )
> {noformat}
> select * from (
> (values (1)) t3(i);
> ) q2
> # returns i
> # 1
> {noformat}
> Since Q1 consists of two columns named "i" it is not possible to reference
> this column.
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