求一条sql ~~
SELECT NAME, (DECODE (kpi_id, '210504', kpi_value, '0')) 铁塔角度x,
  (DECODE (kpi_id, '210505', kpi_value, '0')) 铁塔角度y, (DECODE (kpi_id, '210501', kpi_value, '0')) 温度
  FROM (SELECT his.kpi_value,
  TO_CHAR (his.cll_time, 'MM-DD HH24:MI:SS') AS NAME,
  his.kpi_id
  FROM table1 his where his.kpi_id IN ('210505', '210504','210501'))

这样一条sql

得出的结果是 同一时间多条记录 

 NAME 铁塔角度x 铁塔角度y 温度
 
 09-01 00:01:32 1 0 0 
 09-01 00:01:32 0 1 0 
 09-01 00:01:32 0 0 1 
 09-01 00:02:32 2 0 0 
  09-01 00:02:32 0 0 2 
   
要求是 把多条数据在同时间合并 

 NAME 铁塔角度x 铁塔角度y 温度 
  09-01 00:01:32 1 1 1 
  09-01 00:02:32 2 0 2 
   
  各个帮忙看看sql怎么写


------解决方案--------------------

SQL code

--try
select
    TO_CHAR (his.cll_time, 'MM-DD HH24:MI:SS') AS NAME,
    max(DECODE (kpi_id, '210504', kpi_value, '0')) 铁塔角度x,
    max(DECODE (kpi_id, '210505', kpi_value, '0')) 铁塔角度y,
    max(DECODE (kpi_id, '210501', kpi_value, '0')) 温度
from table1 his
where his.kpi_id IN ('210505', '210504','210501')
group by TO_CHAR (his.cll_time, 'MM-DD HH24:MI:SS');