带索引的 SimpleRepository 自动迁移
我在开发中使用 subsonic simplerepo 进行迁移,这使事情变得非常简单,但我一直遇到带有索引的 nvarchar 列的问题。出于显而易见的原因,我的用户表在用户名列上定义了一个索引,但每次我启动项目时,亚音速都会执行以下操作:
ALTER TABLE [Users] ALTER COLUMN Username nvarchar(50);
这会导致此问题:
The index 'IX_Username' is dependent on column 'Username'.ALTER TABLE ALTER COLUMN Username failed because one or more objects access this column
有什么办法可以解决此问题吗?
I am using subsonic simplerepo with migrations in dev and it makes things pretty easy but I keep running into issues with my nvarchar columns that have an index. My users table has an index defined on the username column for obvious reasons but each time I start the project subsonic is doing this:
ALTER TABLE [Users] ALTER COLUMN Username nvarchar(50);
which causes this:
The index 'IX_Username' is dependent on column 'Username'.ALTER TABLE ALTER COLUMN Username failed because one or more objects access this column
Is there any way around this issue?
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您使用哪个数据库管理系统? SQL服务器?
MySQL 从未遇到过这样的问题,但您的 DBMS 似乎不允许更改带有索引的列。这不是 SubSonic 相关的问题。
也许你应该这样做:
Which DBMS are you using? Sql Server?
Never had a problem like this with MySQL, but it seems that your DBMS does not allow to alter a column with an index on it. This is not a SubSonic related issue.
Maybe you should do:
这是其中之一或另一个。如果您选择通过 Subsonic 管理数据库(使用迁移),则无法使用索引和其他内容。对不起,伙计。
It is one or the other. If you choose to manage your DB by Subsonic (use migrations), you can't use indexes and stuff. Sorry mate.