Returning a count from a query using Union

Question

Hi. I'm attempting to select a count from this query and then display the total in a message, but I'm getting a 'Too many rows returned' (ORA-01422). Can anyone tell me how I can achieve a total for this query?
         SELECT nvl(count(*),0)
       INTO conflict_cnt
       FROM dropper_assign
       WHERE dropper_id = :dropper_vacations.dropper_id AND
            trunc(sched_date) between :begin_dt and :end_dt
          union                          
   SELECT nvl(count(*),0)
    FROM exfc.bundle a, splits b
    WHERE a.bundle = b.bundle AND
         b.dropper_id = :dropper_vacations.dropper_id AND
         trunc(a.actual_dt) between :begin_dt and :end_dt;
          call_alert.the_error('test: '||to_char(conflict_cnt));Any help would be greatly appreciated.

Answer 1

Thanks Christian, I can know return to my favourite present occupation named HOLIDAYS ;)
btw with count function as the first message
WITH
  data AS
    SELECT
      COUNT(*) cnt
    FROM
      dual
      CONNECT BY level <= 10
    UNION
    SELECT
      COUNT(*) cnt
    FROM
      dual
      CONNECT BY level <= 20
SELECT
  SUM(cnt)
FROM
  data
SUM(CNT)              
30        
/* and */
WITH
  data AS
    SELECT
      COUNT(*) cnt
    FROM
      dual
      CONNECT BY level <= 10
    UNION ALL /****** returns me also 30 *****/
    SELECT
      COUNT(*) cnt
    FROM
      dual
      CONNECT BY level <= 20
SELECT
  SUM(cnt)
FROM
  data
SUM(CNT)              
30       result will defer only if both count return exactly the same value so definitely UNION ALL for that case or the simple solution I have provided before ...
but leave it. that's enough messages for this thread ;)
Jean-Yves
Edited by: JeanYves Bernier on 9 août 2011 17:42