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I have some ALTER TABLE statements that I am running. Not all of them work (they are the result of running SQL Data Compare) and I want to group them in some transactions and roll back the statements if something goes wrong.

Is this possible, or is it only data that can be rolled back?

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Are you talking about Redgate SQL Compare? One of the synchronization options there is to use transactions IIRC so you could look at the generated script there to see some boiler plate code for this. – Martin Smith Sep 25 '12 at 16:08
Yes I am. I shall take a look at that. – Piers Karsenbarg Sep 26 '12 at 8:46
It is supported, and relatively safe if kept very simple. Mixing DML and DDL can make things very complicated internally, leading to 'interesting' behaviours e.g.… and… – Paul White Sep 26 '12 at 12:57
up vote 3 down vote accepted
        ALTER TABL1...
        ALTER TABLE2
      END TRY
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Yes, this is possible.

Most DDL statements can be rolled back in SQL Server (There are a few exceptions such as CREATE DATABASE)

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You need to look into transactions and exception handling in T-SQL. Check out the last two examples on this page:

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