Conditional dropdown list in parameter form

Question

I have a report with a parameter form containing a parameter called "person_name". As of now, it is a dropdown list which is built using a select query over my "people" table and displays all the people in the table. I need to add a checkbox on the parameter page which says "Show only current people" and when this checkbox is checked, the "person_name" dropdown list should be limited to only current people. I don't know how to add a checkbox to the parameter form, and how to implement this conditional if-then-else on the dropdown list.
My current query for the dropdown list is:
SELECT 1 co11,' ALL - ALL' col2
FROM dual
UNION
SELECT person_seq_num col1, last_name||','||first_name col2
FROM people
ORDER BY 2 ascWhen the checkbox is checked, my query needs to be:
SELECT 1 co11,' ALL - ALL' col2
FROM dual
UNION
SELECT person_seq_num col1, last_name||','||first_name col2
FROM people
WHERE person_current_flag='Y'
ORDER BY 2 ascCan anyone help with this problem? Thanks in advance.

Answer 1

Hi,
you can use 2 parameters with LOVs. The first one for All People/Current People, the second for your people-parameter. How to get them dependent is described in Note 185951.1 SAMPLE - How to create a parameter LOV based on another parameter value?
Regards
Rainer