[jira] Commented: (DERBY-4433) Cannot insert from EXCEPT/INTERSECT when target table has more columns than the source

["Knut Anders Hatlen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DERBY-4433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12773025#action_12773025 ] 

Knut Anders Hatlen commented on DERBY-4433:
-------------------------------------------

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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