GROUP BY not working but is it oracle

Question

i have to write procedures in oracle and use them as datasources in reporting services (microsoft product to create reports). All works well except when I have any query which includes a GROUP BY clause.
For instance this code compiles fine in toad...
CREATE OR REPLACE PROCEDURE RSP_PROJECT_INFO
     IN_PROJECTNAME IN varchar2 :=NULL,
     p_cursor out types.sqlcur
AS
BEGIN
open p_cursor for
SELECT      
          PROJECT.PROJECTID
          MAX(PROJECT.PROJECTNAME) As ProjectName,
          MAX(PROJECT.SUBJECT) AS ProjectCustomer,
          MAX(PROJECT.CATEGORY) As ProjectCategory,
          MAX(PROJECT.AUTHOR) AS ProjectCommission,
          MAX(MANAGER_ID) as ProjectManager,
          MAX(PROJECTED_COMPLETION) AS ProjectedCompletion,
          MAX(PROJECTED_START_DATE) AS ProjectedStartDate,
          MAX(PROJECT.FINISHDATE) AS ProjectFinishDate,
          COUNT(PROJ_TASK.TASKUNIQUEID) as TotalTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_STATUS=2 THEN 1 ELSE 0 END) AS CompletedTasks, 
          SUM(CASE WHEN PROJ_TASK.TASK_STATUS=1 THEN 1 ELSE 0 END) AS  InProgressTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_STATUS=0 THEN 1 ELSE 0 END) AS NotStartedTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_TYPE=1 THEN 1 ELSE 0 END) AS CCCBTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_TYPE=2 THEN 1 ELSE 0 END) AS CCFBTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_TYPE=3 THEN 1 ELSE 0 END) AS ProjectEndMSTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_TYPE=4 THEN 1 ELSE 0 END) AS ProjectEndTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_TYPE=6 THEN 1 ELSE 0 END) AS CMSBTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_TYPE=0 THEN 1 ELSE 0 END) AS OtherTasks
FROM                
          PROJECT
INNER JOIN
        PROJ_TASK
                      ON PROJ_TASK.PROJECTID=PROJECT.PROJECTID
WHERE
       (PROJECT.PROJECTNAME = IN_PROJECTNAME OR IN_PROJECTNAME IS NULL OR IN_PROJECTNAME='All')
       AND (PROJECT.PROJECT_TYPE = 2)
GROUP BY PROJECT.PROJECTID
ORDER BY
       PROJECT.PROJECTNAME;
END;
/But as soon as I run the dataset source in reporting services to obtain the data I get this error message:
Microsoft Development Environment
An error occurred while executing the query.
ORA-00979: not a GROUP BY expression
ORA-06512: at "CONCERTO.RSP_PROJECT_INFO", line 8
ORA-06512: at line 1
OK  
---------------------------But I dont see any issue with my code. I have used the proper aggregate functions and groupped by my id column. What gives and why does this happen only on any query which contains a group by clause.
Even if I did:
Select PROJECTID FROM PROJECT GROUP BY PROJECTIDThis too although very simple sql seems to fail when I try to run the datasource in reporting services with the above error. Can anyone point me to whats wrong ?
Or how to avoid this ?
Thanks,
jon

Answer 1

Thanks mpowel..
very odd I got rid of the ORDER BY clause and it works...
CREATE OR REPLACE PROCEDURE RSP_PROJECT_INFO
     IN_PROJECTNAME IN varchar2 :=NULL,
     p_cursor out types.sqlcur
AS
BEGIN
open p_cursor for
SELECT      
          MAX(PROJECT.PROJECTID),
          MAX(PROJECT.PROJECTNAME) As ProjectName,
          MAX(PROJECT.SUBJECT) AS ProjectCustomer,
          MAX(PROJECT.CATEGORY) As ProjectCategory,
          MAX(PROJECT.AUTHOR) AS ProjectCommission,
          MAX(MANAGER_ID) as ProjectManager,
          MAX(PROJECTED_COMPLETION) AS ProjectedCompletion,
          MAX(PROJECTED_START_DATE) AS ProjectedStartDate,
          MAX(PROJECT.FINISHDATE) AS ProjectFinishDate,
          COUNT(PROJ_TASK.TASKUNIQUEID) as TotalTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_STATUS=2 THEN 1 ELSE 0 END) AS CompletedTasks, 
          SUM(CASE WHEN PROJ_TASK.TASK_STATUS=1 THEN 1 ELSE 0 END) AS  InProgressTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_STATUS=0 THEN 1 ELSE 0 END) AS NotStartedTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_TYPE=1 THEN 1 ELSE 0 END) AS CCCBTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_TYPE=2 THEN 1 ELSE 0 END) AS CCFBTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_TYPE=3 THEN 1 ELSE 0 END) AS ProjectEndMSTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_TYPE=4 THEN 1 ELSE 0 END) AS ProjectEndTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_TYPE=6 THEN 1 ELSE 0 END) AS CMSBTasks,
          SUM(CASE WHEN PROJ_TASK.TASK_TYPE=0 THEN 1 ELSE 0 END) AS OtherTasks
FROM                
          PROJECT
INNER JOIN
        PROJ_TASK
                      ON PROJ_TASK.PROJECTID=PROJECT.PROJECTID
WHERE
       (PROJECT.PROJECTNAME = IN_PROJECTNAME OR IN_PROJECTNAME IS NULL OR IN_PROJECTNAME='All')
       AND (PROJECT.PROJECT_TYPE = 2)
GROUP BY PROJECT.PROJECTID;
END;
/Oracle doesnt seem to like to order when you do a group by and the ordering column doesnt appear in your list? ??
I can live with that...