gistfile1.txt

Thanks Matt!

That is certainly a valid argument regarding implicit many-many relations, but not for the reason you have described. As I wrote in [339](https://github.com/prisma/specs/issues/339#issuecomment-559534963), I think implicit many-many is a solved problem: Introspection and Lift should both simply follow our convention when printing and reading the schema.

---

The main reason I am interested in including the implicit many-many syntax is that they enable a simpler Photon API for the majority that does not need extra fields on the relation table.

### Traversing implicit many-many relation:

```
model User {
  posts Post[]
}

model Post {
  user User
  title String
}
```

```
prisma.users.findOne(...).posts()[o].title
```

### Traversing explicit many-many relation:

```
model User {
  posts UserPost[]
}

model UserPost {
  user User
  post Post
}

model Post {
  user User
  title String
}
```

```
prisma.users.findOne(..., include: {posts: {post: true}}).posts()[0].post.title
```

So, the call to make is wether the gain from simpler Photon API is worth the extra complexity in the Schema (having both implicit and explicit many-many is more complex than just having the explicit version).