为表中未使用的列重写旧的数据库迁移是否很好？

Question

Removing unused code is a good practice. But is DB migrations script file an exception in this practice?

I have to maintain a Laravel application and I'm in the process of cleaning up unused code and I found out I have lots migrations scripts. My migration includes adding and dropping table columns.

Anyone who have encountered the same situation? Thanks!

Answer 1

If the migration does not affect anything on the database, then it is fine to remove them.

But, if they affect, even a little part like adding/removing (same or different) columns, changing types ... then look up current data carefully if your in PRODUCTION ; otherwise, refactoring before production is good.

Answer 2

如果您知道在项目寿命的后期不需要迁移文件，请将其删除，但是我建议您之前备份应用程序。