Can you nest fragments in GraphQL?

Question

Say you have fragment B, which depends on fragment A. I wonder whether you can plug-and-play fragment B in a query.

Answer 1

Yes, you can!

Take these queries:

fragment Bar on Foo {
  bar {
    id
  }
}

fragment Baz on Foo {
  baz {
    id
  }
}


fragment MetaFoo on Foo {
  id
  ...Bar
  ...Baz
}

query Qux {
  foo {
    ...MetaFoo
  }
}

Qux is a valid GraphQL query.