在连接字符串中 添加设置节点 ConnectionLifeTime(计量单位为 秒).超过设定的连接会话 会被杀死! Connection Lifetime, ConnectionLifeTime 0 When a connection is returned to the pool, its creation time is compared with the current time, and the connection is destroyed if that time span (i
MySQL按时间统计每个小时记录数 方案1: ? 1 2 3 4 5 6 7 SELECT @rownum := @rownum + 1 AS ID, CONCAT((CASE WHEN t.hour = 24 THEN 0 ELSE t.hour END),':00:00') AS TIME, COUNT(*) AS COUNT FROM (SELECT id, HOUR(DATE_FORMAT(createtime,'%H:%i:%s'))+1 AS HOUR FROM b
Manjaro 与 Windows 双系统时间相差8小时 产生原因: Windows 将本地硬件时间作为设定时区(如 UTC+8)的区时,而 Linux 默认将其作为 UTC 时间. 解决方式: 让 Manjaro 不要将其作为 UTC 时间: sudo timedatectl set-local-rtc 1