Question

在两个具有相同列名的表上创建VIEW时，如何避免MySQL中的重复列名错误

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

使用列名称的别名

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

SQL查询中的列名重复

2 个答案: