2017年11月16日

ulimit
摘要： echo "* soft nofile 65535" >> /etc/security/limits.conf echo "* hard nofile 65535" >> /etc/security/limits.conf echo "* soft nproc 65535" >> /etc/security/limits.conf echo "* hard nproc 65535" >> ... 阅读全文
posted @ 2017-11-16 11:52 星期六男爵 阅读(130) 评论(0) 推荐(0)
SQL语句 分组排序、去重复
摘要： select * from biao1 where (Openid,OperateTime) in (select Openid,max(OperateTime) from biao1 group by Openid); SELECT Openid, max(OperateTime), SourceIndex FROM ... 阅读全文
posted @ 2017-11-16 11:48 星期六男爵 阅读(591) 评论(0) 推荐(0)

导航