ORACLE 游标使用的一个例子

declare
v_xm tb.姓名%type;
v_kc tb.课程%type;
v_fs tb.分数%type;
CURSOR cv_id_cursor IS
select tb.姓名,tb.课程,tb.分数
from tb;
begin
open cv_id_cursor;
loop
fetch cv_id_cursor into v_xm,v_kc,v_fs;
exit when cv_id_cursor %NOTFOUND;
dbms_output.put_line(v_xm||' '||v_kc||' '||v_fs||' ' );
end loop;
close cv_id_cursor;
end;