Add column to table and then update it inside transaction

Question

I am creating a script that will be run in a MS SQL server. This script will run multiple statements and needs to be transactional, if one of the statement fails the overall

Answer 1

Orthogonal to Remus's comments, what you can do is execute the update in an sp_executesql.

ALTER TABLE [Table] ADD [Xyz] NVARCHAR(256);

DECLARE @sql NVARCHAR(2048) = 'UPDATE [Table] SET [Xyz] = ''abcd'';';
EXEC sys.sp_executesql @query = @sql;

We've needed to do this when creating upgrade scripts. Usually we just use GO but it has been necessary to do things conditionally.