RHCE7.0答案之Mariadb
Mariadb配置：[*]yum groupinstall mariadb mariadb-client
yum grouplist |grep maria
[*]systemctl enable mariadb.service
systemctl restart mariadb.service
[*]firewall-cmd --permanent --add-service=mysql
firewall-cmd --reload
firewall-cmd --permanent --list-all
[*]mysql_secure_installation, 输入root密码，初始为空。
set root password->Remove anon user?yes->Disallow root login?yes->Remove test database?yes->Reload?yes
[*]mysql -uroot -ptianyun; 创建数据库
[*]show databases;
create database concats; show databases;
[*]导入数据库：
mysql -uroot -ptianyun concats < /home/student/mariadb.dump
或者：
use concats; select database();
source /home/student/mariadb.dump;
show tables; 可以看到一张相应的表
[*]授权用户访问， 可能要指定网段
help grant; 查看授权命令
grant select (limitation list) on concats.* to 'luigi@'%
[*]flush privileges 刷新权限列表（系统关键字不分大小写，表名和库名分大小写）
[*]mysql -uluigi -h 172.25.0.11 -ptianyun
use concats; select * from product;
[*]单表查询：
[*]desc product \G 或 desc product;查看表结构
[*]select * from product where id_category='2'
[*]select count(*) from product where id...
[*]select * from product where ... and ... 下划线_表示匹配一个字符，%表示多个
[*]select * from product where name regexp '^T'; 正则表达式
多谢楼主分享
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