10774: trigger DML o insert

Suppose I have the following procedure:

Create procedure PA_ActualizarTabla1
Campo_Nuevo Varchar (10)
as
Update Table1
September Field = @ Campo_Nuevo
where id = 1

I want to store in a table of audits before and after registration,
then my question is, which is faster ?,
Add 1 insert statements in this procedure to save the before and after in the table
2 Adding a DML trigger on that table
enrique_aeoAsked:
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Jim HornMicrosoft SQL Server Developer, Architect, and AuthorCommented:
For starters, your proc has an error, as the space in the name [September Field] forces the use of square brackets [] around the name.   Also there's a space after the @.

Not abundantly certain which is faster, but Adding a DML trigger would be the more accurate,

There may be better ways based on your audit table, but give this a whirl..
CREATE TRIGGER tg_upd_PA_ActualizarTabla1
AFTER UPDATE AS

Declare @dt datetime = GETDATE()

INSERT INTO your_audit_table (Col1, col2, col3, action, timestamp) 
SELECT col1, col2, col3, 'new', @dt
FROM inserted
UNION
SELECT col1, col2, col3, 'old', @dt
FROM deleted
GO

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Microsoft SQL Server 2005

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