Question

我有来自此查询的数据：

with countedresult As  
(
    select ROW_NUMBER() over(partition by d_hotbox order by d.D_hotbox,d.start_date) as ADS,d.ID,
           d.D_hotbox,
           d.D_PWM_location,
           d.start_date,
           d.Last_date--, 
           h.SERIAL_NUMBER
    from   D_FLEET d
) 
select   countedresult.ID,
         countedresult.D_HOTBOX,        
         countedresult.D_PWM_location,
         countedresult.start_date,
         countedresult.Last_date, 
         LAG(ID, 1) over (partition by d_hotbox order by d_hotbox, start_date) as previous_id, 
         ads HB_Run_Number
from     countedresult
order by d_hotbox, HB_Run_Number DESC

我必须只更新表中的两列，它们是PREVIOUS_ID，RUN_NO。

我想在另一个表中插入这些值

[dbo].[D_FLEET]
(
[ID] [int] IDENTITY(1,1) NOT NULL,
[D__LOCATION] [int] NOT NULL,
[D_BOX] [int] NULL,
[D__MODULE] [int] NULL,
[ST_DATE] [date] NULL,
[LT_DATE] [date] NULL,
[S_START_DATE] [date] NULL,
[S_LAST_DATE] [date] NULL,
[LT_DATE_@1A] [date] NULL,
[C_LAST_SS] [float] NULL,
[S_AVG] [float] NULL,
[SP_MIN] [float] NULL,
[SP_MAX] [float] NULL,
[H_TYPE] [nvarchar](50) NULL,
[R_FRU] [nvarchar](50) NULL,
[NILD] [nvarchar](50) NULL,
[RLACE] [nvarchar](50) NULL,
[HRADE] [float] NULL,
[HTUS] [nvarchar](50) NULL,
[HDULE] [nvarchar](50) NULL,
[HT_DATE] [date] NULL,
[OAG] [nvarchar](50) NULL,
[ID_DATE] [datetime] NULL,
[UPDATED_DATE] [datetime] NULL,
[Run_Type] [nvarchar](50) NULL,
[RUN_NO] [nvarchar](50) NULL,
[PREVIOUS_ID] [int] NULL
)

我想更新以下值：

Previous_id 从表D_FLEET查询到 PREVIOUS_ID ，并参考ID列。
HB_RUN_NUMBER 从表D_FLEET查询到 [RUN_NO] 并参考ID列。

这是正确的方法吗？

我无法理解如何执行此操作，因为我正在执行从查询到表的更新。

感谢任何帮助。

Answer 1

您需要将结果加入目标表并更新，如下所示。

请注意JOIN（标准中存在错误）以及我们如何在UPDATE中使用别名。

with countedresult As  
(
    select ROW_NUMBER() over(partition by d_hotbox order by d.D_hotbox,d.start_date) as ADS,d.ID,
           d.D_hotbox,
           d.D_PWM_location,
           d.start_date,
           d.Last_date--, 
           h.SERIAL_NUMBER
    from   D_FLEET d
)
UPDATE T
SET
     RUN_NO = LAG(ID, 1) over (partition by d_hotbox order by d_hotbox, start_date)
     PREVIOUS_ID = ads
from     countedresult
join     D_FLEET AS T ON T.ID = countedresult.ID
order by d_hotbox, HB_Run_Number DESC

Answer 2

with countedresult As  
( select ROW_NUMBER() over (partition by d_hotbox order by start_date) as ADS
       , LAG(ID, 1)   over (partition by d_hotbox order by start_date) as previous_id
       , ID
    from D_FLEET 
) 
update D_FLEET 
   set HB_RUN_NUMBER = countedresult.ADS 
     , PREVIOUS_ID   = countedresult.PREVIOUS_ID 
  from D_FLEET  
  join countedresult 
    on D_FLEET.ID = countedresult.ID

如何将数据从查询更新到表格？

2 个答案: