SQL Update with row_number()

Question

I want to update my column CODE_DEST with an incremental number. I have:

CODE_DEST   RS_NOM
null        qsdf
null        sdfqsdfqsdf
null        qsdfqsdf
         


        

Answer 1

I did this for my situation and worked

WITH myUpdate (id, myRowNumber )
AS
( 
    SELECT id, ROW_NUMBER() over (order by ID) As myRowNumber
    FROM AspNetUsers
    WHERE  UserType='Customer' 
 )

update AspNetUsers set EmployeeCode = FORMAT(myRowNumber,'00000#') 
FROM myUpdate
    left join AspNetUsers u on u.Id=myUpdate.id