Doesn't this mean that with REF cursors too, you need to know the table and column in advance to pass this to the...
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function, and if so, then what's the real difference between regular and REF cursors?
CREATE OR REPLACE PROCEDURE test_proc (t_name IN VARCHAR2,c_name IN VARCHAR2) AS TYPE refcur IS REF CURSOR; r_cursor refcur; TYPE tabtype IS TABLE OF VARCHAR2(100); r_val tabtype; sql_stmt VARCHAR2(2000); BEGIN -- Formulate the SQL statement based on the column -- and table name passed as inputs to this proc sql_stmt:='SELECT '||c_name||' FROM '||t_name; -- Instantiate the Ref Cursor OPEN r_cursor FOR sql_stmt; -- Bulk collect into the Ref Cursor FETCH r_cursor INTO r_val; CLOSE r_cursor -- Perform other logic on the return results END; /In the above example, I used a REF cursor to dynamically define the cursor's query. With traditional cursors, the cursor's query needs to be known beforehand to be able to compile the stored proc.
Tom Kyte has a lot of information on REF cursors on his Web site. I highly recommend his site for this type of question.
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