SQL Server触发将数据更新到表中，但仅当客户插入或更新一个客户机时才应更新数据

现在触发器看起来是这样的，它部分工作

我的扳机是这样的

   ALTER  trigger [dbo].[tr_EligebilityCheck]
on [dbo].[Clients]
 for INSERT,update
as 

BEGIN
UPDATE Clients 
SET 
StatusID = 5
WHERE 
ClientID IN (Select ClientID
            from Clients c 
            join inserted --ADD THIS JOIN
            on inserted.ClientID = c.ClientID
            join IncomeEligibility i 
            on c.HshldSize = i.HshldSize
            where StatusID in (1,2) 
            and  WIC = 0
            and (c.CategCode = 'SR' 
                and ((MonthlyYearly = 'month' and c.AnnualHshldIncome >= i.SeniorMo) 
                or (c.AnnualHshldIncome >= i.SeniorYr and MonthlyYearly ='year'))
                and DATEDIFF(YEAR,DOB,GETDATE()) < 60)
            or
                (c.CategCode = 'CH' 
                and ((MonthlyYearly = 'month' and c.AnnualHshldIncome >= i.WomanChildMo) 
    or (c.AnnualHshldIncome >= i.WomanChildYr and MonthlyYearly ='year'))
                and DATEDIFF(YEAR,DOB,GETDATE()) > 6))

update Clients
set StatusID = 4 
where WIC =1
from Clients --ADD THIS FROM STATEMENT
join inserted --ADD THIS JOIN
on inserted.ClientID = Clients.ClientID

END

---

如果我用CategCode='CH'插入客户机，它检查收入，但不检查DOB。

只要您对主键有正确的引用，我不明白为什么您需要

而不是

触发器。似乎没有任何情况会阻止插入或更新，对吗？您只需要确保StatusID的值。没有理由必须在更新之前完成

我认为更新太多行的原因是没有将触发器限制为仅插入

表中的那些行。尝试向触发器添加联接，如下所示：

ALTER  trigger [dbo].[tr_EligebilityCheck]
on [dbo].[Clients]
 for INSERT,update
as 

BEGIN
UPDATE Clients 
SET 
StatusID = 5
WHERE 
ClientID IN (Select ClientID
            from Clients c 
            join inserted --ADD THIS JOIN
            on inserted.ClientID = c.ClientID
            join IncomeEligibility i 
            on c.HshldSize = i.HshldSize
            where StatusID in (1,2) 
            and  WIC = 0
            and (c.CategCode = 'SR' 
                and ((MonthlyYearly = 'month' and c.AnnualHshldIncome >= i.SeniorMo) 
                or (c.AnnualHshldIncome >= i.SeniorYr and MonthlyYearly ='year'))
                and DATEDIFF(YEAR,DOB,GETDATE()) < 60)
            or
                (c.CategCode = 'CH' 
                and ((MonthlyYearly = 'month' and c.AnnualHshldIncome >= i.WomanChildMo) 
    or (c.AnnualHshldIncome >= i.WomanChildYr and MonthlyYearly ='year'))
                and DATEDIFF(YEAR,DOB,GETDATE()) > 6))

update Clients
set StatusID = 4 
where WIC =1
from Clients --ADD THIS FROM STATEMENT
join inserted --ADD THIS JOIN
on inserted.ClientID = Clients.ClientID

END

插入表？问题是我不知道如何编写，我可以在插入或插入后编写，但不知道如何在插入时而不是插入时编写。也许可以从更简单的开始。。。另外，你能解释一下为什么你认为这应该是一个触发器而不是触发器吗？最后一次更新的目的是什么？是否要更新表中的每一行？我想我需要它
而不是
，因为如果它只是用于插入，更新它会更改数据库中无法更改的现有数据。例如，申请该计划的人对家庭有一个要求，他在该计划中，他们的要求发生了变化，但他仍然应该在该计划中。如果我使用
进行插入，更新
会将他的状态设置为不合格。正因为如此，我需要在将客户机数据插入表之前检查它，以便它不会更改数据库中的exist记录。据我所知，
而不是INSERT
，它的功能与
Oracle
中使用的
更新之前的
相同。我尝试只更新要插入或更新的记录。但不要修改表中的任何现有数据。第一个变量可以工作，但它只检查DOB howewer Skipping
和（（MonthlyEarly='month'和c.AnnualHshldIncome>=i.SeniorMo）或（c.AnnualHshldIncome>=i.SeniorYr和MonthlyEarly='year'））
部分，我不明白第二个部分的原因和这个部分不工作（年份，出生日期，GETDATE（））>6）您是否认为有任何问题无法解决？所以，与您之前遇到的问题相同。我对此不确定，这就是为什么我没有尝试修改您的
where
子句。如果没有一些样本数据来练习，很难说。您的
where
子句中肯定有问题，但我不确定它在哪里。不过，我的第一个猜测是，它与括号的排列有关。
ALTER  trigger [dbo].[tr_EligebilityCheck]
on [dbo].[Clients]
 for INSERT,update
as 

BEGIN
UPDATE Clients 
SET 
StatusID = 5
WHERE 
ClientID IN (Select ClientID
            from Clients c 
            join inserted --ADD THIS JOIN
            on inserted.ClientID = c.ClientID
            join IncomeEligibility i 
            on c.HshldSize = i.HshldSize
            where StatusID in (1,2) 
            and  WIC = 0
            and (c.CategCode = 'SR' 
                and ((MonthlyYearly = 'month' and c.AnnualHshldIncome >= i.SeniorMo) 
                or (c.AnnualHshldIncome >= i.SeniorYr and MonthlyYearly ='year'))
                and DATEDIFF(YEAR,DOB,GETDATE()) < 60)
            or
                (c.CategCode = 'CH' 
                and ((MonthlyYearly = 'month' and c.AnnualHshldIncome >= i.WomanChildMo) 
    or (c.AnnualHshldIncome >= i.WomanChildYr and MonthlyYearly ='year'))
                and DATEDIFF(YEAR,DOB,GETDATE()) > 6))

update Clients
set StatusID = 4 
where WIC =1
from Clients --ADD THIS FROM STATEMENT
join inserted --ADD THIS JOIN
on inserted.ClientID = Clients.ClientID

END

ALTER  trigger [dbo].[tr_EligebilityCheck]
on [dbo].[Clients]
INSTEAD OF INSERT
as 

BEGIN

--First, set StatusID in the inserted table
UPDATE inserted
SET 
StatusID = 5
WHERE 
ClientID IN (Select ClientID
            from Clients c 
            join IncomeEligibility i 
            on c.HshldSize = i.HshldSize
            where StatusID in (1,2) 
            and  WIC = 0
            and (c.CategCode = 'SR' 
                and ((MonthlyYearly = 'month' and c.AnnualHshldIncome >= i.SeniorMo) 
                or (c.AnnualHshldIncome >= i.SeniorYr and MonthlyYearly ='year'))
                and DATEDIFF(YEAR,DOB,GETDATE()) < 60)
            or
                (c.CategCode = 'CH' 
                and ((MonthlyYearly = 'month' and c.AnnualHshldIncome >= i.WomanChildMo) 
    or (c.AnnualHshldIncome >= i.WomanChildYr and MonthlyYearly ='year'))
                and DATEDIFF(YEAR,DOB,GETDATE()) > 6));

update inserted
set StatusID = 4 
where WIC =1;

--Once the inserted table looks right, proceed with the insert
--You need to explicitly write an insert statement, or nothing will happen
INSERT INTO [dbo].[Clients]
  <column_list>
SELECT <column_list>
FROM inserted;