1UPDATE `users_users` 2 SET 3 `users_users`.`created` = (SELECT UNIX_TIMESTAMP(MIN(`tiki_schema`.`install_date`)) FROM `tiki_schema`), 4 `users_users`.`registrationDate` = `users_users`.`created` 5 WHERE 6 `users_users`.`userId`=1 AND 7 `users_users`.`created` IS NULL; 8