Get the rowcount from a PL/SQL report

Question

Hi every body,
I got issues about get the rowcount, or just the number of rows return from a report.
Because the report is based on some parameters that users provide, so it is not a straghtforward sql syntax.
The thing is for the PDF printing server I use (Apache FOP), if the total rows return around less than 5000, it work OK, more than that I got the "Java outofmemory"
I want to find a way that give users a warning message that if
the report is more than 5000 rows, the PDF print server cannot work.
Here is my pl/sql for the report
Thanks in advance.
declare
q varchar2(32767);
begin
q:= 'SELECT "DAILYLOG"."LOGID" "LOGID", '||
' "DAILYLOG"."CLIENTID" "CLIENTID", '||
' "DAILYLOG"."CLIENT" "CLIENT", '||
' "DAILYLOG"."LOGDATE" "LOGDATE", '||
' "DAILYLOG"."STAFF" "STAFF", '||
' "DAILYLOG"."ACTIVITY" "Activity", '||
' "DAILYLOG"."COMMENTS" "COMMENTS", '||
' "DAILYLOG"."INCIDENTS" "INCIDENTS", '||
' "DAILYLOG"."SELFHARM" "SELFHARM", '||
' "DAILYLOG"."VIOLENCESTAFF" "VIOLENCE STAFF", '||
' "DAILYLOG"."VIOLENCEYOUTH" "VIOLENCE YOUTH", '||
' "DAILYLOG"."CONTRABAND" "CONTRABAND", '||
' "DAILYLOG"."INTERFERENCE" "INTERFERENCE", '||
' "DAILYLOG"."PROPERTYABUSE" "PROPERTY ABUSE", '||
' "DAILYLOG"."RESTRAINTS" "RESTRAINTS", '||
' "DAILYLOG"."MISBEHAVIOUR" "MISBEHAVIOUR", '||
' "DAILYLOG"."ABSCONDING" "ABSCONDING"'||
' FROM "DAILYLOG"'||
' WHERE DAILYLOG.STAFFID= :P14_STAFFLIST ';
IF trim(:P14_STARTDATE) IS NOT NULL THEN
q:= q || 'and DAILYLOG.LOGDATE >= TO_DATE(:P14_STARTDATE,''DD/MM/YYYY'')';
END IF;
IF trim(:P14_ENDDATE) IS NOT NULL THEN
q:= q || ' and DAILYLOG.LOGDATE <= TO_DATE(:P14_ENDDATE,''DD/MM/YYYY'')';
END IF;
return q;
end;
Cheers,
Ann L.

Answer 1

I'm not entirely sure of what you want, but...
if you just want to find out how many rows a query has, you could just select the max(rownum) from the query.
eg...
select max(rownum)
from (
-- inner query
)And that'll give you a number that = the number of rows.
There are a few other ways of doing it :P
could do a count(*), same thing.