Oracle/PLSQL: OPEN Statement
Once you've declared your cursor, the next step is to open the cursor.
The basic syntax to OPEN the cursor is:
OPEN cursor_name;


For example, you could open a cursor called c1 with the following command:
OPEN c1;


Below is a function that demonstrates how to use the OPEN statement:
CREATE OR REPLACE Function FindCourse
( name_in IN varchar2 )
RETURN number
IS
cnumber number;
CURSOR c1
IS
SELECT course_number
from courses_tbl
where course_name = name_in;
BEGIN
open c1;
fetch c1 into cnumber;
if c1%notfound then
cnumber := 9999;
end if;
close c1;
RETURN cnumber;
END;

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