How to write BATCH QUERY

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1

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DGraph version: v21.12.0

Models
type Director {
DirectorName: string
Actor: uid
}
type Actor {
ActorName
movies: [string]
}

Requests

  1. I have 10,000 director items, and 100,000 actor items.
  2. I Want query 3000 director and corresponding actor items.

My Solution(not work)
{
dires as q(func: type(Director), first: 7000)
q(func: type(Director)) @filter(uid_in(DirectorName, uid(dires))) {
uid
DirectorName
DirectorActor() {
uid
ActorName
}
}
}

Could anyone figures out mistakes? thx