[ http://issues.apache.org/jira/browse/DERBY-1763?page=all ]
Andrew McIntyre resolved DERBY-1763.
------------------------------------
Fix Version/s: 10.2.1.5
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: 10.1.3.1
> Environment: Windows 2000, Sun JDK 1.4.2_10
> Reporter: Christopher Schick
> Fix For: 10.2.1.5
>
>
> 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 specified.
> This issue is quite urgent for us, as we don't see a workaround to achieve
> the desired results.
> Attached an example table schema and the affected SELECT Statement.
> --------------------------------------------
> CREATE TABLE t1 (
> c1 VARCHAR(10),
> c2 VARCHAR(10)
> );
> INSERT INTO t1 VALUES('a', 'b');
> INSERT INTO t1 VALUES('c', 'd');
> SELECT RTRIM(LTRIM(c1)),
> COUNT(*)
> FROM t1
> GROUP BY c1;
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