Can analytic functions be used in a cursor ?

Question

The following pl/sql code gives out the error as given below the code. However when the select staement in the cursor if run alone gives the results. Can someone tell me why. Can't analytic functions be used in cursors
declare
cursor cur1 is
SELECT
col1,
col2,
REGR_SLOPE(col1, LOG(10,col2))
OVER(PARTITION BY col1 ORDER BY col2
ROWS BETWEEN 2 PRECEDING AND UNBOUNDED FOLLOWING)
from datatab;
OVER(PARTITION BY col1 ORDER BY col2
ERROR at line 7:
ORA-06550: line 7, column 5:
PLS-00103: Encountered the symbol "(" when expecting one of the following:
, from

Answer 1

Since it is a cursor, you can put the select statement in quotes which will execute the statement as dynamic SQL and allow the analytical function reference:
open c for
  'SELECT col1, col2, REGR_SLOPE(col1, LOG(10,col2))
                      OVER(PARTITION BY col1 ORDER BY col2
                      ROWS BETWEEN 2 PRECEDING AND UNBOUNDED FOLLOWING)
     from datatab';
loop
  fetch c into v_col1, v_col2, v_col3;
  exit when c%notfound;
  -- do something with values
end loop;
close c;