Question

有没有人能告诉我如何从这个陈述中获取记录

选择在过去x个月内不是当月员工的随机员工

表员工
ID
员工姓名

表EmployeeOfTheMonth
ID
雇员
MonthStartedDate
MonthEndedDate

非常感谢

Answer 1

select top 1 id from employee as emp 
where not exist(
    select top 1 * 
      from employeeofthemonth as em 
      where em.id = emp.id and dateadd(m, -6, getdate()) < monthendeddt )
order by newid()

......或者接近那个的东西。我没有运行sql，但是在mssql服务器上，这应该是正确的。

Answer 2

修改上一个答案，我更喜欢使用IN语句


DECLARE @xMonth INT
SET @xMonth = 3

SELECT TOP 1 ID
FROM Employee
WHERE ID NOT IN (SELECT EmployeeID 
FROM EmployeeOfTheMonth
WHERE DATEADD(m, -@xMonth, GETDATE()) < MonthEndedDate)
ORDER BY NEWID()

SQL查询帮助：选择当月的随机员工

2 个答案: