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SQL Server 2005 row update

Experts,

We have a table with very large number of rows in our production, and users complain some information change every night a flag field gets set to a wrong value. We want to create a process to capture changed rows, and the time of each update. What would be the easiest to do so? Please explain.
Thanks,
Lynn

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ToddBeaulieu

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lludden

If you have a base table like this:
CREATE TABLE [dbo].[MyTable](
      [EntryID] [int] IDENTITY(1,1) NOT NULL,
      [EntryDate] [datetime] NOT NULL,
      [CustomerID] [int] NOT NULL,
      [ProductID] [int] NOT NULL
)
Then you can create a log table
CREATE TABLE [dbo].[MyTable_History](
      [EntryID] [int] IDENTITY(1,1) NOT NULL,
      [EntryDate] [datetime] NOT NULL,
      [CustomerID] [int] NOT NULL,
      [ProductID] [int] NOT NULL,
      [DateModified] [datetime] NOT NULL,
      [ModifiedBy] [varchar](30) NOT NULL
)

Then add a trigger on the base table:
CREATE TRIGGER [dbo].[MyTable_TrackChanges] ON [dbo].[MyTable]
FOR INSERT, UPDATE
AS

SET NOCOUNT ON

INSERT INTO MyTable_History (EntryID, EntryDate, CustomerID, ProductID, DateModified, ModifiedBy)
SELECT EntryID, EntryDate, CustomerID, ProductID, getdate(), suser_sname()
FROM inserted

yrcdba7

ASKER

Thanks!