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https://issues.apache.org/jira/browse/DERBY-4433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12773025#action_12773025
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Knut Anders Hatlen commented on DERBY-4433:
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This bug is only seen on branches where DERBY-4420 has been fixed. On branches
without the fix for DERBY-4420, a NullPointerException is seen instead.
> 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
>
> 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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