migrat如何从一个外键值到另一个外键

Question

我正在从一个数据库迁移到另一个数据库。

到目前为止一切正常但有一张桌子我总是得到同样的错误。我还想在此表中迁移外键存在问题。我想我必须为外键声明一些特别的东西吗？

这是我的疑问：

INSERT INTO [asd].HolidayTracker.dbo.AnnualVacation(UserId,WorkingTime,VacationDays,FromDate,ToDate)
SELECT u1.user_htUserId,
       u1.vacationDays,
       u1.workingTime,
       CAST('2013-01-01' AS DATETIME),
       CAST('2013-12-31' AS DATETIME)

FROM    HolidayTracker.dbo.AnnualVacation u1 
            LEFT JOIN  [asd].HolidayTracker.dbo.AnnualVacation u2
                ON u1.user_htUserId = u2.UserId AND 
                   u1.vacationDays = u2.VacationDays AND
                   u1.workingTime = u2.WorkingTime

这是我收到的错误消息：

error message INSERT INTO [asd].HolidayTracker.dbo.AnnualVacation(UserId,WorkingTime,VacationDays‌​,FromDate,ToDate) – `

这是表结构： 来源表

目的地表

Answer 1

对于初学者来说，与您选择的字段相比，您在insert语句中的WorkingTime，VacationDays字段是错误的。

尝试更改字段的顺序，如下所示，看看会发生什么。

错误可能就像你试图将浮点数插入int列而没有转换值一样简单。

INSERT INTO [asd].HolidayTracker.dbo.AnnualVacation(UserId,VacationDays,WorkingTime,FromDate,ToDate)
SELECT u1.user_htUserId,
   u1.vacationDays,
   u1.workingTime,
   CAST('2013-01-01' AS DATETIME),
   CAST('2013-12-31' AS DATETIME)

FROM    HolidayTracker.dbo.AnnualVacation u1 
        LEFT JOIN  [asd].HolidayTracker.dbo.AnnualVacation u2
            ON u1.user_htUserId = u2.UserId AND 
               u1.vacationDays = u2.VacationDays AND
               u1.workingTime = u2.WorkingTime