How do I know which record is being updated in Update trigger?

Hi All,
Thanks in advance!
I want to generate an XML file in a Update trigger script.
Only the updated record needs to be exported to the XML file.
How do I know which record is being updated in the Update trigger?
Thank you so much!
Regards,
SeanSean,
Could be more than one record. Use the DELETED and INSERTED pseudo/logical
tables available within the firing of the trigger.
HTH
Jerry
"Sean" <ventilla@.hotmail.com> wrote in message
news:eZpeMm5zFHA.1924@.TK2MSFTNGP14.phx.gbl...
> Hi All,
> Thanks in advance!
> I want to generate an XML file in a Update trigger script.
> Only the updated record needs to be exported to the XML file.
> How do I know which record is being updated in the Update trigger?
> Thank you so much!
>
> Regards,
> Sean
>|||Define being updated. If you mean the rows that were touched, even if all
values remain the same:
select *
from inserted
If you mean those that have actually changed:
select *
from inserted
join deleted
on <some unchangable value, like a surrogate (identity)
key>
where inserted.col1 <> deleted.col2 --not nullable
or (inserted.col2 <> deleted.col2
or (inserted.col2 is null and deleted.col2 is not null)
or (inserted.col2 is not null and deleted.col2 is null) )
If you mean something else, then please provide more info.
----
Louis Davidson - http://spaces.msn.com/members/drsql/
SQL Server MVP
"Arguments are to be avoided: they are always vulgar and often convincing."
(Oscar Wilde)
"Sean" <ventilla@.hotmail.com> wrote in message
news:eZpeMm5zFHA.1924@.TK2MSFTNGP14.phx.gbl...
> Hi All,
> Thanks in advance!
> I want to generate an XML file in a Update trigger script.
> Only the updated record needs to be exported to the XML file.
> How do I know which record is being updated in the Update trigger?
> Thank you so much!
>
> Regards,
> Sean
>|||Dear Louis,
I need all the records that have changed and inserted.
That means a modified record and new record.
For example:
CREATE TRIGGER trgUpdate
ON User_Master
FOR UPDATE
AS
DECLARE @.FileName varchar(50),
@.bcpCommand varchar(2000)
SET @.FileName =
REPLACE('c:\result_'+CONVERT(char(8),GET
DATE(),1)+'.xml','/','-')
SET @.bcpCommand = 'bcp "SELECT * FROM KDMNN..User_Master Where UserID=' +
CONVERT(varchar(5),@.@.identity) + ' for xml raw" queryout "'
SET @.bcpCommand = @.bcpCommand + @.FileName + '" -U sa -P -c'
EXEC master..xp_cmdshell @.bcpCommand
I have a problem detecting the @.@.identity. I could not get the information
of which records have been modified and inserted.
Thank you very much!
Regards,
Sean
"Louis Davidson" <dr_dontspamme_sql@.hotmail.com> wrote in message
news:uCMwbb7zFHA.2540@.TK2MSFTNGP09.phx.gbl...
> Define being updated. If you mean the rows that were touched, even if all
> values remain the same:
> select *
> from inserted
> If you mean those that have actually changed:
> select *
> from inserted
> join deleted
> on <some unchangable value, like a surrogate (identity)
> key>
> where inserted.col1 <> deleted.col2 --not nullable
> or (inserted.col2 <> deleted.col2
> or (inserted.col2 is null and deleted.col2 is not null)
> or (inserted.col2 is not null and deleted.col2 is null) )
> If you mean something else, then please provide more info.
> --
> ----
--
> Louis Davidson - http://spaces.msn.com/members/drsql/
> SQL Server MVP
> "Arguments are to be avoided: they are always vulgar and often
> convincing." (Oscar Wilde)
> "Sean" <ventilla@.hotmail.com> wrote in message
> news:eZpeMm5zFHA.1924@.TK2MSFTNGP14.phx.gbl...
>|||Yeah, you cannot rely on identities to identify a row like this. You really
need to have another key that you can expect not to change. Since you
insert the values, you know them and can trust them.
----
Louis Davidson - http://spaces.msn.com/members/drsql/
SQL Server MVP
"Arguments are to be avoided: they are always vulgar and often convincing."
(Oscar Wilde)
"Sean" <ventilla@.hotmail.com> wrote in message
news:uTlSTNG0FHA.908@.tk2msftngp13.phx.gbl...
> Dear Louis,
> I need all the records that have changed and inserted.
> That means a modified record and new record.
> For example:
> CREATE TRIGGER trgUpdate
> ON User_Master
> FOR UPDATE
> AS
> DECLARE @.FileName varchar(50),
> @.bcpCommand varchar(2000)
> SET @.FileName =
> REPLACE('c:\result_'+CONVERT(char(8),GET
DATE(),1)+'.xml','/','-')
> SET @.bcpCommand = 'bcp "SELECT * FROM KDMNN..User_Master Where UserID=' +
> CONVERT(varchar(5),@.@.identity) + ' for xml raw" queryout "'
> SET @.bcpCommand = @.bcpCommand + @.FileName + '" -U sa -P -c'
> EXEC master..xp_cmdshell @.bcpCommand
> I have a problem detecting the @.@.identity. I could not get the information
> of which records have been modified and inserted.
> Thank you very much!
>
> Regards,
> Sean
> "Louis Davidson" <dr_dontspamme_sql@.hotmail.com> wrote in message
> news:uCMwbb7zFHA.2540@.TK2MSFTNGP09.phx.gbl...
>|||Dear Louis,
Thanks for you information.
It helps a lot!
I am trying to copy the modified or new data from User_Master into a
User_MasterTemp table using an Update trigger.
CREATE TRIGGER trgUpdate ON User_Master
FOR UPDATE
AS
Delete From User_MasterTemp
Insert into User_MasterTemp Select * From Inserted
GO
Then do a exporting to XML file from the temp table using an Insert trigger.
CREATE TRIGGER User_MasterInsert ON [dbo].[User_MasterTemp]
FOR INSERT
AS
DECLARE @.FileName varchar(50),
@.bcpCommand varchar(2000)
SET @.FileName =
REPLACE('c:\result_'+CONVERT(char(8),GET
DATE(),1)+'.xml','/','-')
SET @.bcpCommand = 'bcp "SELECT * FROM KDMNN..User_MasterTemp for xml raw"
queryout "'
SET @.bcpCommand = @.bcpCommand + @.FileName + '" -U sa -P -c'
EXEC master..xp_cmdshell @.bcpCommand
Hopefully, the code can work. I am doing the troubleshooting cause the
script in the Insert trigger hangs the SQL Server.
Regards,
Sean
"Louis Davidson" <dr_dontspamme_sql@.hotmail.com> wrote in message
news:O04yriG0FHA.916@.TK2MSFTNGP10.phx.gbl...
> Yeah, you cannot rely on identities to identify a row like this. You
> really need to have another key that you can expect not to change. Since
> you insert the values, you know them and can trust them.
> --
> ----
--
> Louis Davidson - http://spaces.msn.com/members/drsql/
> SQL Server MVP
> "Arguments are to be avoided: they are always vulgar and often
> convincing." (Oscar Wilde)
> "Sean" <ventilla@.hotmail.com> wrote in message
> news:uTlSTNG0FHA.908@.tk2msftngp13.phx.gbl...
>