SQL server min和MAX日期

Question

我有一张包含以下数据的表格

我希望输出为

EMP 25FC0938-88EE有3个条目。应在A列中输入最早日期的ID，并在B列中休息。

我如何在SQL

中实现这一目标

Answer 1

您可以使用first_value()：

select firstvalue as columnA, id as columnB
from (select *, first_value(id) over (partition by us order by date) as firstvalue
      from table
     ) t
where id <> firstvalue;

如果要插入前一个查询的结果集，请使用INSERT . . INTO语句

insert into table (columnA, columnB)
select firstvalue as columnA, id as columnB
from (select *, first_value(id) over (partition by us order by date) as firstvalue
      from table
     ) t
where id <> firstvalue;