--Declare your variables

declare @ssn varchar(9)

declare @id_user int

--Declare your Cursor

DECLARE MyCursor CURSOR FOR

select ssn,id_user  from users where userid like '%588717fndjor645%'

OPEN MyCursor 

--Get first Cursor Record...

FETCH NEXT FROM MyCursor INTO @ssn,@id_user

WHILE @@FETCH_STATUS = 0 

BEGIN

select  @id_user

update top (1) users set ssn = 'hello 2' where id_user = @id_user

FETCH NEXT FROM MyCursor INTO @ssn,@id_user

END

--Cleanup...

CLOSE MyCursor 

DEALLOCATE MyCursor