oracle中for循环

DECLARE

   str Varchar(10);-- 定义一个字符串变量str

BEGIN

   for i in 1 .. 10000000 loop

      -- INSERT INTO FW_TEST(NAME) VALUES('bbb' + i);DECODE('1','','',DECODE('2','','',DECODE('3','','','2'||'3'))) NVL2('1',NVL2('2',NVL2('3','2'||'3',''),''),'')

      SELECT DECODE('','','',DECODE('','','',DECODE('','','',''||''))) AS str INTO str FROM dual;-- 把查询出来的值赋值给str

       sys.dbms_output.put_line(str || i);-- 打印该字符串

   end loop;

   commit;

END;

/

因为循环次数太多，需要在命令行首先执行SQL语句：

set   serveroutput   on   size   10000000

Decode

oracle中for循环