CREATE TABLE `django_session_cleaned` (
  `session_key` varchar(40) NOT NULL,
  `session_data` longtext NOT NULL,
  `expire_date` datetime NOT NULL,
  PRIMARY KEY  (`session_key`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

INSERT INTO `django_session_cleaned` SELECT * FROM `django_session` WHERE `expire_date` > CURRENT_TIMESTAMP;

RENAME TABLE `django_session` TO `django_session_old_master`, `django_session_cleaned` TO `django_session`;

DROP TABLE `django_session_old_master`;
