PLS-00386: type mismatch found between FETCH cursor and INTO variables

Question

The following package throws : PLS-00386: type mismatch found at \'V_STUDYTBL\' between FETCH cursor and INTO variables

Purpose of the code: Define

Answer 1

you'd need to use the object constructor on the select:

SELECT OBJTYP(A, B, C)
   FROM my_table
  WHERE Study_Number = p_StudyNum(i)

but you can simplify the procedure to this instead of all those loops:

begin
select cast(multiset(select /*+ cardinality(s, 10) */ a, b, c
                        from my_table t, table(p_StudyNum) s
                      where t.study_number = s.column_value) as OutputTyp)
   into p_StdyDtl
   from dual;
end;

Answer 2

Try declaring your cursor as:

CURSOR c_StudyTbl
IS
  SELECT OBJTYP(A, B, C)
    FROM my_table
    WHERE Study_Number = p_StudyNum(i);