script update data in to same table

below script to update top 5 row a column, into same table:


update tbl_user set user_gift= '99' from (select top 5 user_id from tbl_user ) a where tbl_user.user_id =a.user_id


and below for table:

user_id user_name user_gift
-------- ------------ -------------
1 user01 99
2 user02 99
3 user03 99
4 user04 99
5 user05 99
6 user06 00
7 user07 00