Count in package

Question

Is this possible in a package? Count1 is a local variable.
SELECT COUNT(
     SELECT location
     FROM table1
     WHERE IDNo = p_IDNo
     AND orderNo = '1241'
     UNION
     SELECT x.location
     FROM table2 x, table3 y
     WHERE x.name = y.name
     AND y.IDNo = p_IDNo
     ) INTO Count1
FROM dual
Thanks!

Answer 1

i think it is not valid. e.g.
SQL> select count( select empno
  2                  from emp )
  3    from dual;
select count( select empno
ERROR at line 1:
ORA-00936: missing expression
SQL> why not use a sub-query instead. e.g.
SQL> select count(*)
  2    from (select empno from emp);
  COUNT(*)
        14
SQL> your code would look something like:
SELECT COUNT(*)
  INTO Count1
  FROM (SELECT location
          FROM table1
         WHERE IDNo = p_IDNo
           AND orderNo = '1241'
        UNION
        SELECT x.location
          FROM table2 x, table3 y
         WHERE x.name = y.name
           AND y.IDNo = p_IDNo);