ALTER TABLE global_config
  ADD COLUMN IF NOT EXISTS dingtalk_download_url varchar(500) NULL DEFAULT '' COMMENT '钉钉下载链接',
  ADD COLUMN IF NOT EXISTS qwen_office_download_url varchar(500) NULL DEFAULT '' COMMENT '千问办公下载链接';

UPDATE global_config
SET dingtalk_download_url = 'https://www.dingtalk.com/',
    qwen_office_download_url = 'https://qwenwork.cn/'
WHERE (dingtalk_download_url IS NULL OR dingtalk_download_url = '')
   OR (qwen_office_download_url IS NULL OR qwen_office_download_url = '');