觸發存儲錯誤信息

Question

以下是我的SQL Server 2008

ALTER TRIGGER [dbo].[Trigger_UpdateLeadMasters] ON [dbo].[LeadMasters] 
FOR UPDATE 
AS 

DECLARE @CompanyName nvarchar(50); 
DECLARE @PersonName nvarchar(50); 
DECLARE @Designation nvarchar(50); 
DECLARE @Number nvarchar(50); 
DECLARE @Number2 nvarchar(50); 
DECLARE @Emailaddress nvarchar(50); 
DECLARE @Address nvarchar(MAX); 
DECLARE @Address2 nvarchar(MAX); 
DECLARE @CityName nvarchar(50); 
DECLARE @State nvarchar(50); 
DECLARE @PinNumber nvarchar(50); 
DECLARE @Product nvarchar(50); 
DECLARE @RemarkNote nvarchar(MAX); 
DECLARE @Audit_Action varchar(100); 


select @CompanyName=i.CompanyName from inserted i; 
select @PersonName=i.PersonName from inserted i;   
select @Designation=i.Designation from inserted i; 
select @Number=i.Number from inserted i;   
select @Number2=i.Number2 from inserted i;  
select @EmailAddress=i.EmailAddress from inserted i;   
select @Address=i.Address from inserted i;  
select @Address2=i.Address2 from inserted i;  
select @CityName=i.CityName from inserted i;   
select @State=i.State from inserted i;  
select @PinNumber=i.PinNumber from inserted i; 
select @Product=i.Product from inserted i;  
select @RemarkNote=i.RemarkNote from inserted i; 

IF UPDATE(CompanyName) 
set @Audit_Action=' Name Modified or Updated' 
IF UPDATE(PersonName) 
set @Audit_Action='Person Name Modified or Updated' 
IF UPDATE(Designation) 
set @Audit_Action='Designation Modified or Updated' 
IF UPDATE(Number) 
set @Audit_Action='1st Phone Number Modified or Updated' 
IF UPDATE(Number2) 
set @Audit_Action='2nd Phone Number Modified or Updated' 
IF UPDATE(EmailAddress) 
set @Audit_Action='Email Address Modified or Updated' 
IF UPDATE(Address) 
set @Audit_Action='Address Modified or Updated' 
IF UPDATE(Address2) 
set @Audit_Action='Alternate Address Modified or Updated' 
IF UPDATE(CityName) 
set @Audit_Action='City Name Modified or Updated' 
IF UPDATE(State) 
set @Audit_Action='State Modified or Updated' 
IF UPDATE(PinNumber) 
set @Audit_Action='PinNumber Modified or Updated' 
IF UPDATE(Product) 
set @Audit_Action='Product Field Modified or Updated' 
IF UPDATE(RemarkNote) 
set @Audit_Action='Remark Note Modified or Updated' 

insert into LoggerLeadMasters(CompanyName,PersonName,Designation,Number,Number2,EmailAddress,Address,Address2,CityName,State,PinNumber,Product,RemarkNote,Audit_Action,Audit_Timestamp) 
Values(@CompanyName,@PersonName,@Designation,@Number,@Number2,@EmailAddress,@Address,@Address2,@CityName,@State,@PinNumber,@Product,@RemarkNote,@Audit_Action,GETDATE()) 

上觸發但問題是，每當我修改LeadMasters表任何領域，觸發轉到行

IF UPDATE(RemarkNote) 
set @Audit_Action='Remark Note Modified or Updated' 

並存儲錯誤信息LoggerLeadMasters.Can任何人可以幫助我解決這個問題

謝謝

Answer 1

基本上，您需要重新設計觸發器，以便能夠在Inserted（和Deleted）僞表格中處理多行 - 即使UPDATE語句影響10,20,50行，觸發器也只會被調用一次。

所以基本上，你的代碼需要看起來像這樣：

ALTER TRIGGER [dbo].[Trigger_UpdateLeadMasters] 
ON [dbo].[LeadMasters] 
FOR UPDATE 
AS 
    INSERT INTO dbo.LoggerLeadMasters(CompanyName, PersonName, Designation, Number, Number2, 
             EmailAddress, Address, Address2, CityName, State, 
             PinNumber, Product, RemarkNote, 
             Audit_Action, Audit_Timestamp) 
     SELECT 
      CompanyName, PersonName, Designation, Number, Number2, 
      EmailAddress, Address, Address2, CityName, State, 
      PinNumber, Product, RemarkNote, 
      '?????', GETDATE() 
     FROM 
      Inserted 

現在最大的挑戰將是拿出那個Audit_Action，因爲你現在可能插入幾行，每行的可能有更新的不同列...

通常，你不能只將它轉換爲一個單一的字符串 - 通常會做的是存儲舊的和新的感興趣的列 - 因此你總是有信息以後可以更新的內容。

另外：SQL服務器和更新有很多已經內置了這個功能 - 這就是所謂的變化數據捕捉，這可能會救你不必寫幾十個觸發器 - 瞧瞧吧！