摘要：//MySQL 8.0写法 select * from( select row_number() over (partition by UserName order by CheckTime desc) as rn,u.* from kq_record u where CheckDate = '20 阅读全文

摘要：/// <summary> /// 生成模拟数据 /// </summary> /// <param name="vp">间隔时间秒</param> /// <param name="StartDate">统计的时间段</param> /// <param name="EndDate"></para 阅读全文