"Invalid column name" SQL 中的错误

Question

这段代码有什么问题？

我收到此错误：

Invalid column name 'Distance'

代码：

SELECT 
    Company.CompanyId as Id,
    ( 6371  * acos( cos( radians(47.8423155) ) * cos( radians( Company.Latitude  ) ) * cos( radians( Company.Longitude  ) - radians(35.232933) ) + sin( radians(47.8423155) ) * sin( radians( Company.Latitude ) ) ) ) AS Distance
FROM 
    Company 
INNER JOIN  
    Product ON Company.CompanyId = Product.CompanyId 
WHERE
    Distance< 5000   
ORDER BY
    Distance

Answer 1

根据您使用的 rdbms，某些 RDBMS 不允许引用 where 和 order by 列中的列别名。只需使用实际的列名：

SELECT      Company.CompanyId as Id,
            Company.VisitCount AS myVisitCount 
FROM        Company
INNER JOIN  Product ON  Company.CompanyId = Product.CompanyId 
WHERE       Company.VisitCount < 5000   
ORDER BY    Company.VisitCount

Answer 2

将 select 包裹在 subselect

内

   select * from(SELECT 
    Company.CompanyId as Id,
    ( 6371  * acos( cos( radians(47.8423155) ) * cos( radians( Company.Latitude  ) ) * cos( radians( Company.Longitude  ) - radians(35.232933) ) + sin( radians(47.8423155) ) * sin( radians( Company.Latitude ) ) ) ) AS Distance
FROM 
    Company 
INNER JOIN  
    Product ON (Company.CompanyId = Product.CompanyId) 
) AS P
WHERE
    P.Distance< 5000   
ORDER BY
    P.Distance;

内部子查询 returns 您使用别名 Distance 进行过滤所依据的函数。

"Invalid column name" SQL 中的错误

"Invalid column name" error in SQL

sql

sql-server

select

group-by

where