Help with a large compound statement - sort of

Question

Hi all. Hopefully you can help me. I'm trying to develop a little application in htmldb/ application express and having troubles with one little box.
I have a page item that will have a value between 2003 and 2036. I will be referencing the value of this item from the session state, no worries. The next item in the page will be based on this value and the session state will trigger one of 33 possible queries for this 2nd item. I know that sounds complex but it has to be that way unfortunately, the queries that will be triggered by this :ITEM_1 value are very different so there is no pretty way of doing that bit.
So say the value of Item1 = :ITEM1(session state value)
I need to do something like
IF
:ITEM1 = '2004'
THEN
select column.name from table.name where condition
ELSEIF
:ITEM = '2005'
THEN
select column.name from table.name where condition
ELSEIF
:ITEM = '2006'
THEN
''you get the idea
I need to repeat this the 33 times for 33 different SELECT statements. I've tried to figure out the best way to approach it, whether that is an IF statement, a WHERE statement or similar but am really struggling. I have no training in any of this and am not an IT person or programmer, just a cartograpaher who got an extra job to do :)
Which is the best approach for me here? And what is the syntax I need to use? I tried the IF statements but must be making some really fundamental mistakes in syntax. Forums are the only support available to me. Please help.....
Cheers and thanks for your time. Michael

Answer 1

:ITEM1 = '2004' ... :ITEM = '2005'
select column.name from table.name where conditionAssuming ITEM1 and ITEM is just a typo and if the select statement is the same, you can use
if :ITEM BETWEEN TO_NUMBER('2004') and TO_NUMBER('2005') THEN
select column.name from table.name where condition
end if;
HTH
Ghulam