如何根据sql中的条件过滤重复行？

Question

我有一名员工 table 有重复的记录，包括雇用合同或更换徽章的详细信息。

FullName	Status	Current Position
John Doe	Inactive	Finance Analyst
John Doe	Active	Finance Manager
Mike Wood	Active	Project Manager
Mike Wood	Inactive	Consultant
Sam Hyke	Inactive	Director
Ahmed Saeed	Active	Supply Chain Manager

我想 select 所有记录，不管状态如何，只有在重复的情况下，它应该过滤并选择状态为 'Active' 的行。

预期结果

FullName	Status	Current Position
John Doe	Active	Finance Manager
Mike Wood	Active	Project Manager
Sam Hyke	Inactive	Director
Ahmed Saeed	Active	Supply Chain Manager

Answer 1

select top 1 with ties FullName,Status,[Current Position]
from yourtable
order by row_number() over(partition by FullName order by case Status when 'Active' then 1 else 0 end)

Answer 2

您可以 select DISTINCT FullName，按 FullName、Status、

订购 table

SELECT DISTINCT FullName,
       Status,       
       [Current Position]
FROM employees
ORDER BY FullName, Status;

重新排序后，'Active'将始终排在第一位。 （如果存在）

Answer 3

试试这个：

select top 1 with ties full_name "Full Name",Status,current_position "Current Position"
from employee
order by row_number() over(partition by full_name order by case Status when 'Active' then 0 else 1 end)

如何根据sql中的条件过滤重复行？

How to filter duplicate rows based on a condition in tsql?

sql

tsql

filter

duplicates