Workaround solution for using PLSQL as a source of interactive report?

Hi all!

I have a PL/SQL anonymous block here, I wanted to use as the source for an interactive report. Only, I didn't know that interactive reports supported PL/SQL...
For example, the code:

DECLARE
a_userid NUMBER;

BEGIN
SELECT userid
INTO a_userid
FROM users
WHERE UPPER(username) = :APP_USER;
EXCEPTION
WHEN NO_DATA_FOUND THEN
a_userid := 0;

IF a_userid = 0 THEN
SELECT distinct a.name AS Foodname, a.foodid AS Foodid
FROM food a 
INNER JOIN foodunit c
ON a.foodid = c.foodid
WHERE a.foodlanguageid = :P18_LANGUAGE
OR a.foodlanguageid = :P18_SET_LANGUAGE
AND a.userid = 0
ORDER BY a.name;
 
ELSIF a_userid = :APP_USER THEN
SELECT DISTINCT a.name AS Foodname, a.foodid AS Foodid
FROM food a 
INNER JOIN foodunit c
ON a.foodid = c.foodid
WHERE a.foodlanguageid = :P18_LANGUAGE
OR a.foodlanguageid = :P18_SET_LANGUAGE
AND a.userid = 0 
AND a.userid = a_userid
ORDER BY a.name;
END IF;
END;

Of course this code will not work because I do not understand everything IN the statements, but just trying to understand what it is that I'm aiming.
This code point is that when a user is not logged (and visits as a public user page), it must fetch the 'NAME' and 'FOODID"FOOD table lines. I added a column of this table (named USERID) and all rows having the value '0' for this column.
Now, when a user logs on, he or she has a fixed username (registered in another table, named 'USERS'). A user is able to add foods that they own to the list.

Of course, a visitor is not supposed to see all food products that have been added to the table by registered users. So, I wanted to show the separate data. Visitors (unregistered) only see the default values (all the lines in which the userid = 0) and registered users should see both added their own food (my username is 1, then I want to see all the lines where the userid = 1) and the rows with default values (where userid = 0).

I found a way here:
http://www.oracleapplicationexpress.com/tutorials/71-Oracle-Apex-interactive-report-based-on-PLSQL-function

But it is not only makes sense to me. Y at - it is an easy way to explain how the tutorial in the link, or you know an easier way? Like making a procedure or something, or a function or a process page and somehow, refer to that in the SQL source interactive report?

Any help is greatly appreciated.

APEX version: 4.1.1.00.23

Hi again,

How does this request?

SELECT DISTINCT a.name AS Foodname, a.foodid AS Foodid
  FROM food a INNER JOIN foodunit c ON a.foodid = c.foodid
 WHERE a.foodlanguageid IN (:P18_LANGUAGE, :P18_SET_LANGUAGE)
  AND (a.userid = :P18_USERID OR a.userid = 0)
ORDER BY a.name

Tags: Database

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