Custom ORDER BY in report

Question

Dear apex devs!
I need an option to control the order clause in an select statement.
Hence I have a two buttons, which when pressed bind a global page item via Ajax.
I then thought I could reference the content of my Application Item in the sort order of my statement as follows:
select a.ba_lang, b.lng_baumart, b.int_bedeutung
from vt_tbl_baumart a, vt_tbl_baumartenbedeutung b, vt_tbl_gebiet c
where a.cnt_baumart = b.lng_baumart and b.lng_gebiet = c.cnt_gebiet and
lower(b.lng_gebiet)= lower(:p6_lng_gebiet) and instr(upper(a.str_verfahren),upper(nvl(:F_VERFAHREN,a.str_verfahren))) > 0
order by decode( :F_SORT, 'BA_LANG', ba_lang, 'INT_BEDEUTUNG', int_bedeutung )However instead of ordering according to both columns I need to either sort according to column ba_lang or int_bedeutung!
Do you have a hint how to accomplish this?
Thanks for sharing your knowledge!
I appreciate it!
Seb

Answer 1

Hi,
Try
SELECT a.ba_lang,
  b.lng_baumart,
  b.int_bedeutung
FROM vt_tbl_baumart a,
  vt_tbl_baumartenbedeutung b,
  vt_tbl_gebiet c
WHERE a.cnt_baumart                                                        = b.lng_baumart
AND b.lng_gebiet                                                           = c.cnt_gebiet
AND lower(b.lng_gebiet)                                                    = lower(:p6_lng_gebiet)
AND instr(upper(a.str_verfahren),upper(NVL(:F_VERFAHREN,a.str_verfahren))) > 0
ORDER BY
  CASE :F_SORT
    WHEN 'BA_LANG'
    THEN 1
    ELSE 3
  ENDWhen item F_SORT is "BA_LANG" query is sorted by column 1 (ba_lang) else by column 3 (int_bedeutung)
Regards,
Jari
Edited by: jarola on Dec 10, 2010 1:50 PM