聚合函数的SQL比较

发布时间：2020-12-14 04:54:01 所属栏目：百科来源：网络整理

导读：当我在ACCESS 2007中运行以下SQL时 Select Location, COUNT(ApartmentBuildings) AS TotalIBuildingsManaged From Apartments Where COUNT(ApartmentBuildings) 3 Group By Location Order By COUNT(ApartmentBuildings) DESC; 我收到以下错误：在where子句

当我在ACCESS 2007中运行以下SQL时

Select Location,
COUNT(ApartmentBuildings) AS
TotalIBuildingsManaged From Apartments
Where COUNT(ApartmentBuildings) > 3
Group By Location Order By
COUNT(ApartmentBuildings) DESC;

我收到以下错误：

在where子句中不能有聚合函数.如何构建此查询以获取所有具有大于3的ApartmentBuildings数量的位置？

解决方法

使用而不是在哪里：

Select Location,COUNT(ApartmentBuildings) AS TotalIBuildingsManaged 
From Apartments 
Group By Location
Having COUNT(ApartmentBuildings) > 3  
Order By COUNT(ApartmentBuildings) DESC;

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（编辑：李大同）

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