摘要:
1.Nginx配置负载均衡 upstream cluster1{ //1.配置机器集群,并配置权重 server 192.168.3.3:8090 weight=8; server 192.168.3.4:8099 weight=3; server 192.168.3.5:8099 weight=2 阅读全文
摘要:
1,基础查询 //1.group by+ 聚合函数+ HAVING条件过滤 SELECT SEX, AVG(AGE) FROM `user` GROUP BY SEX HAVING SEX='女' 2,DCL语句 1,创建用户,当前主机访问 CREATE user 'serlyf'@'localho 阅读全文