Updating fields in sql
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This option takes a list of one or more partitions or subpartitions (or both).
If no columns were specified or the select statement did not include a FOR UPDATE clause, all columns may be updated.
Specifies the temporary named result set or view, also known as common table expression (CTE), defined within the scope of the UPDATE statement.SSMS) will be ideal (though if that is ever a need for other projects, then I agree with Vladimir that using is the way to go).In this particular case, I would create a status table that can be updated per each loop with the number of rows updated thus far.And it doesn't hurt to throw in the current time to have a heart-beat on the process.
Given that you want to be able to cancel and restart the process, I am weary of wrapping the the UPDATE of the main table with the UPDATE of the status table in an explicit transaction.
The CTE result set is derived from a simple query and is referenced by UPDATE statement.