查询user表中,user_name字段值重复的数据及重复次数
select user_name,count(*) as count from user group by user_name having count>1;
查询user表中,user_name字段值重复的数据及重复次数
select user_name,count(*) as count from user group by user_name having count>1;
Vultr Global Cloud Hosting – Brilliantly Fast SSD […]
2011 年成立以来,七牛云致力于成为全球领先的一站式场景化智能视频云服务商,围绕数字化浪潮下的在线音视频需求 […]
腾讯云为数百万的企业和开发者提供安全稳定的云计算服务,涵盖云服务器、云数据库、云存储、视频与CDN、域名注册等 […]
选择您的网站托管解决方案,打造完美网站!从共享主机和域名到VPS – 我们拥有您网上成功所需的一切 […]
Helping millions of developers easily build, test, mana […]
Deploy more with Linux virtual machines, global infrast […]
评论已关闭