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Editorial Team
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Asked: 2026-05-13T22:20:08+00:00

I created a trigger on a table for updates. If any update happens, I

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I created a trigger on a table for updates. If any update happens, I want to store the old value in separate table. I am trying to get the old value from “inserted” table, but this table is not populated with old values after update.

Here is the sample code:

CREATE TRIGGER [dbo].[Logs_Update]
   ON  [dbo].[Logs] AFTER  UPDATE
AS 

 DECLARE @url varchar(50)

BEGIN

 SELECT @url =  i.url 
   FROM INSERTED i

 INSERT INTO dbo.Triggers_tbl
   (ID, URL) 
 VALUES
   (1000, @url)

END

I get @url as null from the inserted table.

Please let me know what is wrong with the trigger

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1 Answer

  1. Editorial Team

    The DELETED table contains the “old” values and the “INSERTED” table contains the “new” values.

    To add to this, the INSERTED and DELETED tables may contain multiple rows if your update affects multiple rows and therefore you should probably run your insert with an INSERT SELECT rather than a variable.

    INSERT INTO dbo.Triggers_tbl(URL) SELECT d.url FROM DELETED d
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