INSERT INTO `la_dev_crontab` (`name`, `type`, `system`, `remark`, `command`, `params`, `status`, `expression`, `create_time`, `update_time`)
SELECT '资讯AI评论投放', 1, 0, '轮询文章AI评论任务队列，生成并落库虚拟评论', 'article_ai_comment', '', 1, '*/5 * * * *', UNIX_TIMESTAMP(), UNIX_TIMESTAMP()
WHERE NOT EXISTS (
    SELECT 1 FROM `la_dev_crontab`
    WHERE `command` = 'article_ai_comment'
      AND `delete_time` IS NULL
);