[ADSM-L] "group by" assistance.

I'm having some trouble with the group by clause.  It seems I can't group
data that has been "cast"ed

First start with:
select cast((bytes/1024/1024/1024) as decimal(8,2)) AS "GB", cast(end_time
as date) as "Date" from summary where activity='STGPOOL BACKUP'

                          1794.26     2009-10-19
                          1026.27     2009-10-19
                          1371.60     2009-10-20
                          1524.60     2009-10-20
                          1053.99     2009-10-21
                          1755.08     2009-10-21

As expected, it shows one line per process.  I would like to group these
by the date so we have a total amount of Gigabytes per day.
But when I add the "sum" and "group by" clauses, it doesn't change the
output:

select sum(CAST((bytes/1024/1024/1024) as decimal(8,2))) AS "GB",
cast(end_time as date) as "Date" from summary where activity='STGPOOL
BACKUP' group by end_time

                          1794.26     2009-10-19
                          1026.27     2009-10-19
                          1371.60     2009-10-20
                          1524.60     2009-10-20
                          1053.99     2009-10-21
                          1755.08     2009-10-21


Also, it doesn't let me group by "Date".  It needs to be grouped by the
"end_time"
Any ideas to produce what I'm looking for?


TSM 5.5.3 on AIX 6.1


Regards,
Shawn
________________________________________________
Shawn Drew
Data Protection Engineer
Core IT Production
BNP Paribas RCC, Inc.
Office:   201.850.6998
Mobile: 917.774.8141


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