This page says: "For the LOB data types varchar(max), nvarchar(max), varbinary(max), image, text, ntext, and xml, the old value will only appear in the update old row if the column actually changed during update. For other data types, the column value will always appear in both update rows."This appears to be incorrect (determined by testing) - at least ntext values seem to always be null on update old rows, regardless of whether the value was changed.http://msdn.microsoft.com/en-us/library/bb51
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