【赛迪网－it技术报道】问题：我在工作中遇到了难题，一列数据，除了时间戳以外别的都一样，谁能告诉我，应该如何来选择？

解答：

--假如知道timestamp的值

select * from table where timestamp = 0x00000000000007ea

--不知道值

--第二列

select top 1 * from table where timestamp not in (select top 1 timestamp from table )

--第三列

select top 1 * from table where timestamp not in (select top 2 timestamp from table )

--第四列

select top 1 * from table where timestamp not in (select top 3 timestamp from table )