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https://issues.apache.org/jira/browse/DERBY-4433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12779903#action_12779903
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Knut Anders Hatlen commented on DERBY-4433:
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I agree that this issue could be seen as part of DERBY-4442, so it might make
sense to shift the effort to that bug. I'm cautiously optimistic, though, that
the suggested approach in this issue could serve as a first step towards
DERBY-4442.
If you want to get going on DERBY-4442, then I'd say just go ahead. I haven't
looked much at this issue after the initial evaluation, and put it on hold and
revisit it after DERBY-4442 (when there hopefully will be nothing more to do
except writing a test case). If you can use some of the code I've posted here,
feel free to recycle it over at that issue.
> Cannot insert from EXCEPT/INTERSECT when target table has more columns than
> the source
> --------------------------------------------------------------------------------------
>
> Key: DERBY-4433
> URL: https://issues.apache.org/jira/browse/DERBY-4433
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.6.0.0
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Attachments: prn.diff
>
>
> If an INSERT statement takes the rows to insert from an EXCEPT query or an
> INTERSECT query, the statement fails with "Column position 'X' out of range"
> if the target table contains more columns than the result returned from
> EXCEPT or INTERSECT.
> Example:
> ij> create table t (x int, y int);
> 0 rows inserted/updated/deleted
> ij> insert into t(x) select x from t except select x from t;
> ERROR 42X77: Column position '2' is out of range for the query expression.
> ij> insert into t(x) select x from t intersect select x from t;
> ERROR 42X77: Column position '2' is out of range for the query expression.
> The corresponding UNION query works:
> ij> insert into t(x) select x from t union select x from t;
> 0 rows inserted/updated/deleted
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