Question

我是存储过程的新手，如果有人可以帮我，我有一个请求。

我有两个具有以下列的相同模式temp_20130426和temp_20130427的表：

PID SID Relationship    LName   FName   Col1    PII LastUpdated

每天

LastUpdated列都会更改，

我的要求是编写一个SP来比较除LastUpdate之外的每一列的两个表数据，然后将数据写入新的

PID SID Relationship    LName   FName   Col1    PII LastUpdated Delete

Delete列必须在第二天没有记录时标记

感谢您的帮助!!

Answer 1

我认为这就是你所需要的 -

declare @temp_20130427 table (
                           PID INT
                          ,SID INT
                          ,Relationship char(1)
                          ,Lname varchar(50)
                          ,Fname varchar(50)
                          ,Col1 varchar(50)
                          ,PII varchar(50)
                          ,LastUpdated datetime
                            )
insert into @temp_20130427 values (1,1,'P','Khan','Shahrukh','Actor','Famous',GETDATE())
                        ,(2,2,'P','Khan','Salman','Actor','Famous',GETDATE())
                        ,(3,3,'P','Khan','Saif Ali','Actor','Famous',GETDATE())

select * from @temp_20130427


declare @temp_20130426 table (
                           PID INT
                          ,SID INT
                          ,Relationship char(1)
                          ,Lname varchar(50)
                          ,Fname varchar(50)
                          ,Col1 varchar(50)
                          ,PII varchar(50)
                          ,LastUpdated datetime
                          ,[Delete] bit
                            )
insert into @temp_20130426 values (1,1,'P','Khan','Shahrukh','Actor','Famous',GETDATE(),NULL)
                        ,(2,2,'P','Khan','Salman','Actor','Famous',GETDATE(),NULL)
                        ,(3,3,'P','Khan','Saif Ali','Actor','Famous',GETDATE(),NULL)
                        ,(4,4,'P','Kumar','Akshay','Actor','Famous',GETDATE(),NULL)

select * from @temp_20130426

--Insert the compared data in a new #tmp table
IF OBJECT_ID ('tempdb..#tmp') is not null
DROP TABLE #tmp

select PID
      ,SID
      ,Relationship
      ,Lname
      ,Fname
      ,Col1
      ,PII
INTO #tmp
from @temp_20130426

EXCEPT

select PID
      ,SID
      ,Relationship
      ,Lname
      ,Fname
      ,Col1
      ,PII
from @temp_20130427


IF OBJECT_ID('TEMPDB..#NEW_TABLE') IS NOT NULL
DROP TABLE #NEW_TABLE

select told.PID
      ,told.SID
      ,told.Relationship
      ,told.Lname
      ,told.Fname
      ,told.Col1
      ,told.PII 
      ,told.LastUpdated
INTO #NEW_TABLE
from #tmp t
join @temp_20130426 tOld
on tOld.PID = t.PID   

--See the different data set in #NEW_TABLE table

SELECT * FROM #NEW_TABLE

 --Flag Delete column where record does not exist in next day table
    update t
    set t.[Delete] = 1
    from @temp_20130426 t
    where PID not in (select PID from @temp_20130427)


--See the updated flagged data
select * from @temp_20130426

Answer 2

Nullable列需要包装在ISNULL中以进行连接比较，但是这应该可以让您每天丢失所有记录。

select oldt.*,1
from temp_20130426 oldt
left join temp_20130427 newt ON 
        oldt.[PID]=newt.[PID]
    AND oldt.[SID]=newt.[SID]
    AND oldt.[Relationship]=newt.[Relationship]
    AND oldt.[LName]=newt.[LName]
    AND oldt.[FName]=newt.[FName]
    AND oldt.[Col1]=newt.[Col1]
    AND oldt.[PII]=newt.[PII]
WHERE newt.[PID] IS NULL

存储过程来比较两个表并将数据插入到sql server中的新表中

2 个答案: