[ https://issues.apache.org/jira/browse/DERBY-4380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Knut Anders Hatlen updated DERBY-4380:
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Summary: Subqueries not allowed in ON clause (was: SOME not allowed in ON clause)
Changed "SOME" to "Subqueries" in the summary, since the problem is not limited to SOME subqueries.
> Subqueries not allowed in ON clause
> -----------------------------------
>
> Key: DERBY-4380
> URL: https://issues.apache.org/jira/browse/DERBY-4380
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Reporter: Bernt M. Johnsen
> Assignee: Knut Anders Hatlen
> Attachments: on_subquery.diff
>
>
> SOME is not allowed in ON-clause:
> ij> create table t1 (i integer);
> 0 rows inserted/updated/deleted
> ij> create table t2 (i integer);
> 0 rows inserted/updated/deleted
> ij> create table t3 (i integer);
> 0 rows inserted/updated/deleted
> ij> insert into t1 values (1);
> 1 row inserted/updated/deleted
> ij> insert into t2 values (2);
> 1 row inserted/updated/deleted
> ij> insert into t3 values 2,3,4;
> 3 rows inserted/updated/deleted
> ij> select * from t1 where t1.i = some (select i from t3);
> I
> -----------
> 0 rows selected
> ij> select * from t1 inner join t2 on t1.i = some (select i from t3);
> ERROR 42972: An ON clause associated with a JOIN operator is not valid.
> ij>
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