Unable to use multiple named DataSources

[ccaspanello]

Is there an existing issue for this?

• [X] I have searched the existing issues

Current behavior

My goal is to be able to have a single NestJS to communicate to do different databases on the same cluster. One another team manages (read only) and one we manage (read/write). My understanding is TypeORM can handle this. However I'm not able to get this to to work. It's not able to create or inject the data service into repositories created by NestJS.

In the attached project you will see basic config. In the AppService I'm not injecting the items needed yet. So I think this may be a bug in NestJS OR I need to configure it another way that is different from documentation.

Documentation reference: https://docs.nestjs.com/techniques/database#multiple-databases

Minimum reproduction code

https://github.com/ccaspanello/nestjs-multiple-databases

Steps to reproduce

Checkout repo:

1. In the mysql folder run docker-compose up -d to start up a mysql instance
   • This may or may not even be needed because I don't think the app is even connecting yet)
2. Run yarn start

Expected behavior

I'm expecting to be able to have 2 databases that I can connect to and inject repositories for each as well as being able to use one of the repos (to do a cross database query as mentioned is possible in this Issue: https://github.com/typeorm/typeorm/issues/1196 )

Example for using Repository: @InjectRepository(UserEntity, 'DsSchemaA') userRepo: Repository, @InjectRepository(CompanyEntity, 'DsSchemaB') companyRepo: Repository,

Package

• [ ] I don't know. Or some 3rd-party package
• [ ] code>@nestjs/common</code
• [ ] code>@nestjs/core</code
• [ ] code>@nestjs/microservices</code
• [ ] code>@nestjs/platform-express</code
• [ ] code>@nestjs/platform-fastify</code
• [ ] code>@nestjs/platform-socket.io</code
• [ ] code>@nestjs/platform-ws</code
• [ ] code>@nestjs/testing</code
• [ ] code>@nestjs/websockets</code
• [X] Other (see below)

Other package

@nestjs/typeorm / @nestjs/config

NestJS version

No response

Packages versions

See attached GitHub Repo for full version

Node.js version

v22.4.1

In which operating systems have you tested?

• [X] macOS
• [ ] Windows
• [ ] Linux

Other

No response

[micalevisk]

see https://github.com/nestjs/typeorm/issues/86#issuecomment-476573888

[ccaspanello]

@micalevisk - I just wanted to take a quick moment to thank you. After hours of beating my head against the desk you saved me. Thanks again! You rock!