Error in Inserting data in GTT in Discoverer Desktop

Question

Hi,
I wanted to pass a user entered parameter in Discoverer Desktop as a parameters to the custome SQL query.
I came across a solution where in they are asking to create a separate sheet to take in input parameters from the user and create a condition where in you store the value enterd in a GTT. When i am using this approach i am getting an error message. You cannot perform DML operation in the function. I cam across thread in the forum wherein people are also discussing about the same approach. Can anyone help.
lnk: Passing multiple parameters into Custom Folder...
Thanks
Ashwini

Answer 1

Hi,
It is true that you cannot perform DML operations inside SQL (that is what discoverer do).
The way to work around it is to define the function that perform the insert as AUTONOMOUS_TRANSACTION
You should add the syntax to your function, for example:
CREATE OR REPLACE FUNCTION test1 RETURN INTEGER IS
i INTEGER;
PRAGMA AUTONOMOUS_TRANSACTION;
BEGIN
i := 1:
insert into t
select i from dual;
COMMIT;
RETURN i;
END test1 ;
BTW don't forget the commit although it's GTT and make sure you preserve rows on commit;
Tamir