Add IDENTITY or Unique number to a table – T/SQL
I want to update my table records. However, my existing table does not have any unique columns. So, I need to append Identity column and update all the records based on that Identity column. For example, If my temp table has 1000 records without any unique column values. I need to number all these 1000 records and update the values. There is no need to do an UPDATE. The identity column is going to be populated when it is created….