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
#!/usr/bin/env python #-*- coding:utf-8 -*- ''' 计算某个目录下所有文件的MD5值 ''' import os import sys import hashlib def md5sum(path): for i in os.listdir(path): md5 = hashlib.md5() files = os.path.join(path, i) if os.path.isfile(files): with open(files) as fd: