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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4380) SOME not allowed in ON clause
Date Fri, 18 Sep 2009 09:34:57 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12757078#action_12757078
] 

Knut Anders Hatlen commented on DERBY-4380:
-------------------------------------------

I commented out the code above and ran a couple of small tests, and it appears to do the right
thing. So unless the SQL standard prohibits subqueries in ON clauses, I suggest we just remove
that restriction and add some test cases to verify the functionality in the regression tests.

> SOME not allowed in ON clause
> -----------------------------
>
>                 Key: DERBY-4380
>                 URL: https://issues.apache.org/jira/browse/DERBY-4380
>             Project: Derby
>          Issue Type: Bug
>          Components: Store
>            Reporter: Bernt M. Johnsen
>
> 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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