如何根据条件在SQL Server中派生新列？

Question

我有下表。

我希望基于以下条件编写一个SQL查询：其中阶段为筛选，状态为状态=（已选择/已拒绝/已删除）作为面试日期的数据的最小值（实际为日期）

Answer 1

尝试一下

select 
    t1.stage, t1.status, t2.data 
from 
    table as t1 
inner join
    (select 
         stage, min(data) as data 
     from 
         table 
     group by 
         stage) as t2 on t1.stage = t2.stage and t1.data = t2.data