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From "Andrew McIntyre (JIRA)" <derby-...@db.apache.org>
Subject [jira] Resolved: (DERBY-1763) Using RTRIM(LTRIM(col)) and group by col gives NPE
Date Sat, 30 Sep 2006 06:48:19 GMT
     [ http://issues.apache.org/jira/browse/DERBY-1763?page=all ]

Andrew McIntyre resolved DERBY-1763.

    Fix Version/s:
       Resolution: Fixed

Original reporter verified this as fixed in 10.2.x, probably a side-effect of the work for
DERBY-883. Marking this issue resolved. Please reopen if you feel this is in error.

> Using RTRIM(LTRIM(col)) and group by col gives NPE
> --------------------------------------------------
>                 Key: DERBY-1763
>                 URL: http://issues.apache.org/jira/browse/DERBY-1763
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions:
>         Environment: Windows 2000, Sun JDK 1.4.2_10
>            Reporter: Christopher Schick
>             Fix For:
> When trying to execute a simple SQL Statement that includes both the RTRIM() and LTRIM()
functions on a column in the SELECT clause and contains a GROUP BY clause on that column,
the following Nullpointer Exception is thrown:
> ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
> This does NOT happen, if only RTRIM() OR LTRIM() is used, or if no GROUP BY clause is
> This issue is quite urgent for us, as we don't see a workaround to achieve the desired
> Attached an example table schema and the affected SELECT Statement.
> --------------------------------------------
> c1 VARCHAR(10),
> c2 VARCHAR(10)
> );
> INSERT INTO t1 VALUES('a', 'b');
> INSERT INTO t1 VALUES('c', 'd');
>                  COUNT(*)
> FROM t1
> GROUP BY c1;

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