linux下安装mysql-5.7.25

1、下载对应安装包 https://dev.mysql.com/downloads/mysql/

2、卸载旧版本mysql

列出旧版本MySql的组件列表  rpm -qa | grep mysql

移除相关组件 rpm -e --nodeps {-file-name}

3、解压tar -zxvf mysql-5.7.25-1.el7.x86_64.rpm-bundle.tar 报错

gzip: stdin: not in gzip format
3 tar: Child returned status 1
4 tar: Error is not recoverable: exiting now

压缩包没有用gzip格式压缩，所以不用加z参数 命令改为 tar -xvf mysql-5.7.25-1.el7.x86_64.rpm-bundle.tar

 4、按照依赖关系依次安装rpm包 依赖关系依次为common→libs→client→server

# rpm -ivh mysql-community-common-5.7.25-1.el7.x86_64.rpm

# rpm -ivh mysql-community-libs-5.7.25-1.el7.x86_64.rpm

# rpm -ivh mysql-community-client-5.7.25-1.el7.x86_64.rpm

# rpm -ivh mysql-community-server-5.7.25-1.el7.x86_64.rpm

*在安装 mysql-community-libs-5.7.25-1.el7.x86_64.rpm 时有可能会报错：mysql依赖错误

warning: mysql-community-libs-5.7.25-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
error: Failed dependencies:
        mysql-community-common(x86-64) >= 5.7.9 is needed by mysql-community-libs-5.7.25-1.el7.x86_64
        mariadb-libs is obsoleted by mysql-community-libs-5.7.25-1.el7.x86_64

解决：清除yum里所有mysql依赖包

# rpm -qa|grep mysql

# yum remove mysql-libs

5、启动mysql

# systemctl start mysqld

6、登录mysql

获得安装时默认密码

# cat /var/log/mysqld.log | grep "temporary password"

# mysql -uroot -p

**登录成功操作会报错需要修改密码

mysql > set password for root@localhost=password('你的密码);

授权远程访问

mysql >  GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'youpassword' WITH GRANT OPTION;

执行某段sql脚本报错

[Err] 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated c

解决

my.cnf 里面设置
sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'
在sql_mode 中去掉only_full_group_by