電子紫出版社 【例71】为uers表的用户名列创建索引 Use users Create index user id on username th pad index, fillfactor 9 gnore dup key drop existing statistics norecompute on primary 区回目录• 【例7.1】为users表的用户名列创建索引。 • Use users • Create index user_id on username • with • pad_index, • fillfactor = 9, • ignore_dup_key, • drop_existing, • statistics_norecompute • on [primary] 返回目录