用dbms_sql来实现,
例:
CREATE OR REPLACE PROCEDURE demo(salary IN NUMBER) AS
cursor_name INTEGER;
rows_processed INTEGER;
BEGIN
cursor_name := dbms_sql.open_cursor;
DBMS_SQL.PARSE(cursor_name, 'DELETE FROM emp WHERE sal > :x',
dbms_sql.native);
DBMS_SQL.BIND_VARIABLE(cursor_name, ':x', salary);
rows_processed := dbms_sql.execute(cursor_name);
DBMS_SQL.close_cursor(cursor_name);
EXCEPTION
WHEN OTHERS THEN
DBMS_SQL.CLOSE_CURSOR(cursor_name);
END;