重複列名

Question

創建兩個表，這兩個具有相同的列名的視圖中，當這裏

CREATE VIEW db.VI_RegionCity AS SELECT 
    Region.Name, 
    City.Name 
FROM 
    db.Region Region, 
    db.City City 
WHERE 
    Region.RegionCode = City.RegionCode 



ERROR: Duplicate column name 'Name' 

Answer 1

所示使用別名列名

如何避免MySQL中的DUP列名錯誤

CREATE VIEW db.VI_RegionCity AS SELECT 
    Region.Name as Region_name, 
    City.Name as City_name 
...//rest of the query 

Answer 2

CREATE VIEW db.VI_RegionCity AS SELECT 
    Region.Name AS RegionName, 
    City.Name AS CityName 
FROM 
    db.Region Region, 
    db.City City 
WHERE 
    Region.RegionCode = City.RegionCode