根据2个条件更新SQL

Question

给出以下表结构

地点

LocationName|Easting|Northing

事故

LocationString|Easting|Northing|LocationName

LocationString是一个格式错误的地铁站名称,应用程序的用户可以键入任何旧垃圾.然而,东边和北边(坐标)是一致的.使用它们,我可以通过在查找表中查找这些值来为位置提供一致的名称.

在ACCESS SQL中,我将执行以下操作

UPDATE INCIDENTS, Locations
SET Incidents.LocationName = Locations.LocationsName
WHERE Incidents.Easting = Locations.Easting
AND
Incidents.Northing = Locations.Northing

我如何在T-SQL中完成相同的工作？

Answer 1

UPDATE I
SET I.LocationName = L.LocationsName
FROM Incidents I
JOIN Locations L
ON I.Easting = L.Easting AND I.Northing = L.Northing