Subquery help

Question

Hi there,
I have a subquery and based on the result of one of the columns in subquery i need to call a function.if function returns true then i need to call another query else null.
   With target_subquery
(select a column1,b column2,count(c) column3
from table_1,table_2,table_3
where table_1.pk=table_2.pk and table2_.pk=table_3.pk
group by a,b,c
order by c)
                  case when is_parameter_gt_10(column1) then
                                                 select count(d) into l_cnt from table_4,target_subquery where d=column2 and e=column1 and column3 > 12
                          else
                                               l_cnt=0;
                 end case;Thanks
Edited by: user469956 on Dec 19, 2008 2:28 AM

Answer 1

Firstly SQL Does not support BOOLEAN data type. Only PL/SQL does. So you must change your function to return some thing else like 1 or 0.
And about the query you can do something like this
With target_subquery
     SELECT a column1,b column2,count(c) column3
       FROM table_1,table_2,table_3
      WHERE table_1.pk=table_2.pk and table2_.pk=table_3.pk
      GROUP by a,b,c
      ORDER by c
SELECT CASE WHEN is_parameter_gt_10(column1) = 1
         THEN count(d)
         ELSE count(d)-count(d)
     END
  INTO l_cnt
  FROM table_4,target_subquery
WHERE d=column2
   AND e=column1
   AND column3 > 12