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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4433) Cannot insert from EXCEPT/INTERSECT when target table has more columns than the source
Date Wed, 18 Nov 2009 22:50:39 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12779709#action_12779709
] 

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

I think the root cause of failure (1) is DERBY-4448, which can also be seen on a clean trunk
if the query is modified. With the prn.diff patch, RCL.forbidOverrides() is called on UnionNodes
and RowResultSetNodes, whereas on a clean trunk it is called on all ResultSetNodes except
UnionNodes and RowResultSetNodes, which is probably why the patch exposed the problem in these
other queries.

> 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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