How to write a SQL Server 2008 SQL stat't to populate a 3 character Branch field with the COSTCENTER field starting at position 4?

I am using SQL Server 2008.
How would you write a SQL   UPDATE statement to populate the
BRANCH field, a 3 character field. The source would be the 4th position (up to 3 characters in length) of the COSTCENTER field.

for ex:

UPDATE dbo.tblPSEmail
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Scott PletcherSenior DBACommented:
Honestly, I wouldn't, I'd use a computed column for Branch.

ALTER TABLE dbo.tblPSEmail

If there might be only 1 or 2 bytes, and you need to zero-fill them, you could do this:

ALTER TABLE dbo.tblPSEmail

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Microsoft SQL Server 2008

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