Running a function in a Cursor

Question

hi. i have an interesting question. i have a cursor that works properly.
Such as :
OPEN p_cursor FOR 'select name,surname,age,height,weight .... '
it works properly.
My question is, i want to add a pl sql function as a column. My cursor must be :
OPEN p_cursor FOR
'select name,surname,age,height,weight,calculate(name,surname,age)' .
the calculate function is a pl sql function that gets column values of running rows. And return a value.
how can i write that cursor EXACTLY.. thanx

Answer 1

Oracle prohibits these things because they potentially voilate data consistency:
Side Effects of PL/SQL functions in SQL
A subprogram called from a query or DML statement may not end the current transaction, create or rollback to a savepoint, or ALTER the system or session.
A subprogram called from a query (SELECT) statement or from a parallelized DML statement may not execute a DML statement or otherwise modify the database.
A subprogram called from a DML statement may not read or modify the particular table being modified by that DML statement.
You can think of autonomous functions but in most cases in SQL it's very dangerous approach.
Rgds.