Question

我已经看到了对这个常见错误的一些回复，但没有一个符合我的特定查询。

我收到'如果指定了SELECT DISTINCT，则ORDER BY项必须出现在选择列表中'

以下是查询：

SELECT DISTINCT TOP 40 LocatorID, DisplayAddress 
FROM [UKStreetsAndPlaces].[dbo].[OS_Locator] 
WHERE (SearchAddress LIKE 'Bal%') 
ORDER BY (Longitude + 0.537143) * (Longitude + 0.537143) + (Latitude - 51.253741) * (Latitude - 51.253741) ASC

我已经尝试将纬度和经度字段添加到SELECT行中，我也尝试为这些字段添加GROUP BY，但是我得到了同样的错误。

Answer 1

而是使用group by和聚合函数。我认为这样做你想要的：

SELECT TOP 40 LocatorID, DisplayAddress 
FROM [UKStreetsAndPlaces].[dbo].[OS_Locator] 
WHERE (SearchAddress LIKE 'Bal%') 
GROUP BY LocatorID, DisplayAddress 
ORDER BY MIN((Longitude + 0.537143) * (Longitude + 0.537143) + (Latitude - 51.253741) * (Latitude - 51.253741)) ASC;

Answer 2

您需要按项目将订单添加到select语句中。即。

SELECT DISTINCT TOP 40 LocatorID, DisplayAddress, 
(Longitude + 0.537143) * (Longitude + 0.537143) + (Latitude - 51.253741) * (Latitude - 51.253741) as MyPosition 
FROM [UKStreetsAndPlaces].[dbo].[OS_Locator] 
WHERE (SearchAddress LIKE 'Bal%') 
ORDER BY (Longitude + 0.537143) * (Longitude + 0.537143) + (Latitude - 51.253741) * (Latitude - 51.253741) ASC

如果在使用计算的ORDER BY时指定了SELECT DISTINCT，则ORDER BY项必须出现在选择列表中

2 个答案: