Posible bug building gantt chart in apex 4

Question

Hi fellows,
When building "Project gantt" chart in apex 4 enter the following query:
select 'null' ,
'Proyecto X' ,
1 ,
null,
sysdate ,
sysdate+10 ,
0
from dual
I picked up the parameters from the "Chart query example" and the following error displays:
*1 error has occurred*
** Invalid Gantt chart query: Wrong here:12*
Use the following syntax:
SELECT LINK, ID, TASK_NAME, START_DATE, END_DATE, STATUS FROM ...
LINK     Action Link
ID     Task ID
TASK_NAME     Text that displays along a chart task.
START_DATE     Date column that specifies the actual start date of the task.
END_DATE     Date column that specifies the actual end date of the task.
STATUS     Numeric column that specifies the percentage of progress made for the task.
or
SELECT LINK, ID, TASK_NAME, START_DATE, END_DATE, STATUS, PLANNED_START_DATE,
PLANNED_END_DATE FROM ...
LINK     Action Link
ID     Task ID
TASK_NAME     Text that displays along a chart task.
START_DATE     Date column that specifies the actual start date of the task.
END_DATE     Date column that specifies the actual end date of the task.
STATUS     Numeric column that specifies the percentage of progress made for the task.
PLANNED_START_DATE     Date column that specifies the planned start date of the task.
PLANNED_END_DATE     Date column that specifies the planned end date of the task
As you can see the parameters are diferent ¿? !, I have tried both (lots of variations) but nothing appears to work.
Is this a bug or am I wrong?.
Can u post a simple query like mine that works please?
Thx 4 your help.

Answer 1

Hi Marco,
Just to clarify, tryapexnow.com is running Oracle APEX 4.0 EA3, and http://apex.oracle.com is running Oracle APEX 4.0 Pre-production.
You are correct, the syntax outlined in the error message is incorrect, and I've logged bug *9799373* to track this. As a workaround, you can view sample syntax for Gantt charts on the 'Query' page of the Create wizard, in the 'Chart Query Example for Gantt' Show/Hide region below the text area for entering your chart query, and also in the Oracle APEX 4.0 User's Guide that will be available with our new release. Just in case other users hit the same issue and are unsure of the expected format:
Chart Query Examples for Project Gantt Charts:
SELECT NULL LINK,
TASK_NAME NAME,
TASK_ID ID,
NULL PARENT_ID,
START_DATE ACTUAL_START,
END_DATE ACTUAL_END,
STATUS_NUMBER PROGRESS
FROM TASKS
SELECT 'f?p=4000:2:'||:APP_SESSION||':::P2_ID:'||ID LINK
TASK_NAME NAME,
TASK_ID ID,
PARENT_TASK_ID PARENT_ID,
START_DATE ACTUAL_START,
END_DATE ACTUAL_END,
STATUS_NUMBER PROGRESS
FROM TASKS
SELECT NULL LINK,
TASK_NAME NAME,
TASK_ID ID,
NULL PARENT_ID,
START_DATE ACTUAL_START,
END_DATE ACTUAL_END,
STATUS_NUMBER PROGRESS,
START_DATE-3 PLANNED_START,
END_DATE+1 PLANNED_END
FROM TASKS
Chart Query Examples for Resource Gantt Charts:
SELECT NULL LINK,
RESOURCE_ID ID,
NULL NAME,
NULL PARENT_ID,
START_DATE ACTUAL_START,
END_DATE ACTUAL_END
FROM TASKS
SELECT 'f?p=4000:2:'||:APP_SESSION||':::P2_ID:'||ID LINK
RESOURCE_ID ID,
RESOURCE_NAME NAME,
PARENT_ID PARENT_ID,
START_DATE ACTUAL_START,
END_DATE ACTUAL_END
FROM TASKS
Thanks for reporting this issue, and I'm happy you were able to successfully generate your chart.
Regards,
Hilary