use distinct ids

Author: do4gr

server/connectors/api-connector-mongo/src/main/scala/com/prisma/api/connector/mongo/database/AggregationQueryBuilder.scala

@@ -26,7 +26,7 @@ trait AggregationQueryBuilder extends FilterConditionBuilder with ProjectionBuil
                        selectedFields: SelectedFields,
                        rowValueOpt: Option[GCValue]): Future[Seq[Document]] = {
     aggregationQueryForId(database, model, queryArguments, rowValueOpt).flatMap { ids =>
-      val bsonIds = ids.map(GCToBson(_))
+      val bsonIds = ids.distinct.map(GCToBson(_))
       database.getCollection(model.dbName).find(in("_id", bsonIds: _*)).projection(projectSelected(selectedFields)).toFuture.map { seq =>
         bsonIds.map(id => seq.find(doc => doc.get("_id").get == id).get) //sort according to ids ordering
       }