Merge pull request #2177 from ppodds/patch-1

docs(sql): add @nestjs/typeorm issue 86 solution

Author: kamilmysliwiec

content/techniques/sql.md

@@ -529,6 +529,16 @@ export class AppModule {}
 
 > warning **Notice** If you don't set the `name` for a data source, its name is set to `default`. Please note that you shouldn't have multiple connections without a name, or with the same name, otherwise they will get overridden.
 
+> warning **Notice** If you are using `TypeOrmModule.forRootAsync`, you have to set the data source name outside `useFactory`. For example:
+> ```typescript
+> TypeOrmModule.forRootAsync({
+>   name: 'albumsConnection',
+>   useFactory: ...,
+>   inject: ...,
+> }),
+> ```
+> See [this issue](https://github.com/nestjs/typeorm/issues/86) for more details.
+
 At this point, you have `User` and `Album` entities registered with their own data source. With this setup, you have to tell the `TypeOrmModule.forFeature()` method and the `@InjectRepository()` decorator which data source should be used. If you do not pass any data source name, the `default` data source is used.
 
 ```typescript