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;
WordPress采集插件WP-JPost,Linode,Vultr,Ramnode,优惠码 Coupon,Gift Code,VPS推荐评测,专注Linux,Apache,Mysql,MariaDB,PHP,Nginx技术
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;