不能使用最小值、最大值等SQL Server 2012

Can#39;t use MIN, MAX etc. SQL Server 2012(不能使用最小值、最大值等SQL Server 2012)
本文介绍了不能使用最小值、最大值等SQL Server 2012的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我有这样的查询:

 select 
      FirstName, LastName, BirthDate,
      GETDATE() AS [Today],
      CAST (DATEDIFF (DD, BirthDate, GETDATE())/365.25 AS INT) AS [Age]
FROM
      Employees
WHERE CAST (DATEDIFF (DD, BirthDate, GETDATE())/365.25 AS INT) >=55
ORDER BY LastName ASC

我想找到最大、最小和平均的年龄,我认为我可以做到这一点,但显然我做不到。如何才能做到这一点?

 select 
     FirstName, LastName, BirthDate,
     GETDATE() AS [Today],
     CAST (DATEDIFF (DD, BirthDate, GETDATE())/365.25 AS INT) AS [Age],
     MIN (DATEDIFF (DD, BirthDate, GETDATE())/365.25 AS INT)
FROM
     Employees
WHERE 
     CAST (DATEDIFF (DD, BirthDate, GETDATE())/365.25 AS INT) >=55
ORDER BY 
     LastName ASC

错误:

消息195,级别15,州10,第5行
"min"不是可识别的内置函数名。

推荐答案

这是我找到的解决方案。感谢大家的帮助!

SELECT
       MAX (CAST (DATEDIFF (DD, BirthDate, GETDATE())/365.25 AS INT)) AS [The Biggest Age]
     , MIN (CAST (DATEDIFF (DD, BirthDate, GETDATE())/365.25 AS INT)) AS [The Smallest Age]
     , AVG (CAST (DATEDIFF (DD, BirthDate, GETDATE())/365.25 AS INT)) AS [The Average Age]
FROM
      Employees

这篇关于不能使用最小值、最大值等SQL Server 2012的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持编程学习网!

本站部分内容来源互联网,如果有图片或者内容侵犯您的权益请联系我们删除!

相关文档推荐

Execute complex raw SQL query in EF6(在EF6中执行复杂的原始SQL查询)
SSIS: Model design issue causing duplications - can two fact tables be connected?(SSIS:模型设计问题导致重复-两个事实表可以连接吗?)
SQL Server Graph Database - shortest path using multiple edge types(SQL Server图形数据库-使用多种边类型的最短路径)
Invalid column name when using EF Core filtered includes(使用EF核心过滤包括时无效的列名)
How should make faster SQL Server filtering procedure with many parameters(如何让多参数的SQL Server过滤程序更快)
How can I generate an entity–relationship (ER) diagram of a database using Microsoft SQL Server Management Studio?(如何使用Microsoft SQL Server Management Studio生成数据库的实体关系(ER)图?)