docs: def insert_many(objects, using="default"):
      """Insert list of Django objects in one SQL query. Objects must be
      of the same Django model. Note that save is not called and signals
      on the model are not raised.
  
      Mostly from: http://people.iola.dk/olau/python/bulkops.py
      """
      if not objects:
          return
  
      import django.db.models
      from django.db import connections
      from django.db import transaction
      con = connections[using]
  
      model = objects[0].__class__
      fields = [f for f in model._meta.fields
                if not isinstance(f, django.db.models.AutoField)]
      parameters = []
      for o in objects:
          params = tuple(f.get_db_prep_save(f.pre_save(o, True), connection=con)
                         for f in fields)
          parameters.append(params)
  
      table = model._meta.db_table
      column_names = ",".join(con.ops.quote_name(f.column) for f in fields)
      placeholders = ",".join(("%s",) * len(fields))
      con.cursor().executemany("insert into %s (%s) values (%s)"
                               % (table, column_names, placeholders), parameters)
      transaction.commit_unless_managed(using=using)