SELECT user, sum(first) as sum_first , sum(last) as sum_last from zabbix.wpsuser_data group by user;SELECT user, count(user) as count_user from zabbix.wpsuser_data group by user;【阅读全文】
10分钟学会理解和解决MySQL乱码问题http://cenalulu.github.io/mysql/mysql-mojibake/十分钟搞清字符集和字符编码http://cenalulu.github.io/linux/character-encoding/原博主是Facebook mysql dba,写的都很好:http://cenalulu.github.io/【阅读全文】