Item Source Types Explanation and Examples

Question

Hi all,
I have been confused about the different type of Item Source Type and how to use them.
I mean i understand for PLSQL Expression or Function, I can just put for example : NVL(:P3_ITEM_NAME,'Default'), GET_SOMETHING(:P0_ITEM_ID)
But I need example for the following types :
1. SQL Query
--> select max(date) from xxx; <--- correct???
2. PL/SQL Function Body
3. Preference
4. PL/SQL anonymous block
I tried
declare
begin
if :P9_LAST_SAVED is NOT NULL then
:P9_WELCOME := 'Welcome '||:P9_ALIAS||' !';
end if;
end;
not working :)
Can anyone enlighten me about this? I tried googling this but to no avail.
Cheers,
Joel
Edited by: joel2 on Mar 3, 2009 5:07 PM

Answer 1

PL/SQL Function Body
declare
begin
if :P9_LAST_SAVED is NOT NULL
then
RETURN 'Welcome '||:P9_ALIAS||' !';
else
return 'foo'; -- functions must return a value
end if;
end;
PL/SQL Anonymous Block
begin
if 1=1 then
htp.p('foo');
else
htp.p('bar');
end if;
end;
Scott