Creating Select List with multiple columns

Question

I want to create a select list with multiple columns. I followed the demo application model described in the by Denes Kubicek (Currently my reference for APEX !!)
The code is as follows:
CREATE OR REPLACE FUNCTION getcrops(p_cropid IN NUMBER)
RETURN VARCHAR2
IS
v_cropid VARCHAR2 (400);
v_fcode VARCHAR2 (400);
v_product VARCHAR2 (400);
v_var VARCHAR2 (400);
v_fname VARCHAR2 (400);
v_acres VARCHAR2 (400);
v_style_start VARCHAR2 (400);
v_style_end VARCHAR2 (400);
v_return VARCHAR2 (400);
BEGIN
FOR c IN (select "CROP"."CROPID" as "CROP ID",
     "CROP"."FIELDCODE" as "FIELD CODE",
     "CARROTPRODUCTLIST"."CARROTPRODUCTNAME" as "PRODUCT",
     "VARIETYLIST"."VARIETYNAME" as "VARIETY",
     "FIELD"."FIELDNAME" as "FIELD NAME",
     "CROP"."SIZEINACRES" as "ACRES"
from     "FIELD" "FIELD",
     "CARROTPRODUCTLIST" "CARROTPRODUCTLIST",
     "VARIETYLIST" "VARIETYLIST",
     "CROP" "CROP"
where "CROP"."CARROTPRODUCTTYPE"="CARROTPRODUCTLIST"."CARROTPRODUCTID"
and     "CROP"."VARIETYID"="VARIETYLIST"."VARIETYLISTID"
and     "CROP"."FIELDID"="FIELD"."FIELDID")
LOOP
v_cropid := TO_CHAR (c.'CROP ID', 'FML999G999G999G999G990');
v_fcode := c.'FIELD CODE';
v_product := c.'PRODUCT';
v_var := c.'VARIETY';
v_fname :=c.'FIELD NAME';
v_acres :=c.'ACRES';
FOR i IN 1 .. 12 - LENGTH (c."CROP ID")
LOOP
v_cropid := v_cropid || ' ';
END LOOP;
FOR i IN 1 .. 12 - LENGTH (c.'FIELD CODE')
LOOP
v_fcode := v_fcode || ' ';
END LOOP;
FOR i IN 1 .. 12 - LENGTH (c.'PRODUCT')
LOOP
v_product := v_product || ' ';
END LOOP;
FOR i IN 1 .. 12 - LENGTH (c.'VARIETY')
LOOP
v_var := v_var || ' ';
END LOOP;
FOR i IN 1 .. 12 - LENGTH (c.'FIELD NAME')
LOOP
v_fname := v_fname || ' ';
END LOOP;
FOR i IN 1 .. 12 - LENGTH (c.'ACRES')
LOOP
v_acres := v_acres || ' ';
END LOOP;
v_return := v_cropid || v_fcode || v_product || v_var || v_fname || v_acres;
END LOOP;
RETURN v_return;
END;
I created this anonymous Pl/SQL function at a application level ..Then I followed up to create a select list with a function inside. However I could not create select list with the command suggested in the demo which is
select getcrops(cropid) d, cropid r from crop;
APEX (2.1) returns a error message. What am I missing ? Should the function be called from somewhere else after creating a regular select list..? Where the functions (Pl/SQL) should be ideally stored for application level access..? and for across application level access ? How can I check the function works good. Help is appreciated.

Answer 1

Still really one column.
If they need to be independent then you've got to have three selection lists.
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