All data will be lost as migration files have changed

Bug description

When creating a new migration, I “randomly” get something like:

How to reproduce

Not sure exactly. It’s happening after creating new migrations but not every time. More information on what actually triggers this notification would be helpful in me determining how to reproduce it. How does it determine the files have changed, because the content is the same according to my source control?

Expected behavior

The latest migration I’ve just added is just adding: isAdmin Boolean? to a table. I wouldn’t expect ALL my data to need clearning.

Prisma information

I don’t want to share this publicly.

Environment & setup

• OS: Windows
• Database: Mysql
• Node.js version: 14.17.0

Prisma Version

prisma               : 2.21.0
@prisma/client       : 2.21.0
Current platform     : windows
Query Engine         : query-engine e421996c87d5f3c8f7eeadd502d4ad402c89464d (at ..\..\node_modules\@prisma\engines\query-engine-windows.exe)
Migration Engine     : migration-engine-cli e421996c87d5f3c8f7eeadd502d4ad402c89464d (at ..\..\node_modules\@prisma\engines\migration-engine-windows.exe)
Introspection Engine : introspection-core e421996c87d5f3c8f7eeadd502d4ad402c89464d (at ..\..\node_modules\@prisma\engines\introspection-engine-windows.exe)
Format Binary        : prisma-fmt e421996c87d5f3c8f7eeadd502d4ad402c89464d (at ..\..\node_modules\@prisma\engines\prisma-fmt-windows.exe)
Default Engines Hash : e421996c87d5f3c8f7eeadd502d4ad402c89464d
Studio               : 0.371.0
Preview Features     : orderByAggregateGroup, selectRelationCount

[webnoob]

Confirming that 2.29.0 has resolved this issue. One of my colleagues had the issue so I told him to update to .29 to see if it was fixed. It solved it immediately.

Nice job guys, thanks.

[Jolg42]

Thanks @webnoob for the confirmation

A fix just got released in the dev channel on npm (not recommended for production).

If you can try this specific version 2.29.0-dev.20 to confirm it’s fixing the issue for you and let us know it will be greatly appreciated! 💚

It will be released next Tuesday in our biweekly release.