【Helpers】实用 T-SQL 集合

更新奇数行记录

update t
set [field1] = 1
from (select ROW_NUMBER() OVER(ORDER BY [field2]) % 2 as odd_even, [field1]
      from table) as t
where odd_even = 1;

注：where odd_even = 0 为偶数行记录。