Requesting help-On a report Getting ora-00920 invalid relational operator.

Question

Hi everyone,
I am having a report region with the following query:
select CASE
WHEN ISITRECENTADDENDUM(meckey_fk,code)
THEN
'<a href="javascript:popUp2('''
               || 'f?p=&APP_ID.:61:&SESSION.::NO::P61_MECKEY_FK:'
               || &P60_MECKEY.
               || ''', 700, 700);">'
|| '<img src="#IMAGE_PREFIX#gobut.gif">'
|| '</a>'
ELSE NULL
END EditAddendum,
'<a href="javascript:popURL('''
               ||'&REPORTS_URL.keynewmec&P_1=&P60_MECNUM.'
               || ''', 700, 700);">'
|| '<img src="#WORKSPACE_IMAGES#printer.jpg">'
|| '</a>'
PrintMEC,
"CODE",
"MECKEY_FK",
"ADDENDUM",
"WHO_CREATED",
"WHEN_CREATED"
from "C_ADDENDUMS"
where "MECKEY_FK" = v('P60_MECKEY')
And my function returning boolean is as follows:
create or replace FUNCTION "ISITRECENTADDENDUM"
(meckeyi in number,
codei in varchar2)
return Boolean
is
x varchar2(1);
begin
select max(code) into x from c_addendums where meckey_fk = meckeyi;
if x = codei then
return true;
else
return false;
end if;
exception
when others then
return FALSE;
end;
But I am getting ORA-00920 invalid relational operator. Can anyone please help me out? I am not knowing where the error is. When I run the function by itself I am getting "False" returned as expected. Appreciate any advice on this.
Rgds,
Suma.

Answer 1

Suma,
It looks like what you are trying to do is display a link for the record with the highest value in the Code column, and nothing for the other records.
If that is the case, you can eliminate the function and just use a SQL query like this:
(not tested)
select CASE
          WHEN code = Max(code) over (partition by meckey_fk)
             THEN
               '<a href="#">'
               || ' '
               || '< img class="TargetAlertIcon" src="chrome://targetalert/content/skin/internal.png"></a>'
          ELSE NULL
       END EditAddendum,
       '<a href="#">'
       || ' '
       || '< img class="TargetAlertIcon" src="chrome://targetalert/content/skin/internal.png"></a>' PrintMEC,
       "CODE", "MECKEY_FK", "ADDENDUM", "WHO_CREATED", "WHEN_CREATED"
  from "C_ADDENDUMS"
where "MECKEY_FK" = :P60_MECKEYIs that what you're trying to do?
Doug