Problem while using uid in if condition in a conditional upsert operation

Users Dgraph
2

This isn’t supported. Conditional upserts accepts length functions only, no other feature. Length is the recommended function for this case.

e.g:

upsert {
  query {
    ID  as var(func: eq(user.name, "Matt"))
    check as var(func: uid(ID)) @filter(uid(0x001))
  }

  mutation @if(eq(len(check), 1) ) {
    set {
      uid(check) <user.job> "Engineer"
    }
  }
}