code: def all(self):
          
          partitions = []
  
          query = text("""
              SELECT dataset_vid, vid
              FROM partition_index;""")
  
          for result in self.backend.library.database.connection.execute(query):
              dataset_vid, vid = result
              partitions.append(PartitionSearchResult(dataset_vid=dataset_vid, vid=vid, score=1))
          return partitions
docs: Returns list with vids of all indexed partitions.