启动或停止
启动Mysql服务端
sudo /usr/local/mysql/support-files/mysql.server start
启动Mysql客户端
sudo /usr/local/mysql/support-files/mysql.server stop
mac偏好设置启动or关闭
配置文件设置
复制cnf文件
cp /usr/local/mysql/support-files/my-default.cnf /etc/my.cnf //复制默认mysql配置 文件到/etc目录
配置文件路径 /etc/my.cnf
[mysqld]
character-set-server=utf8
collation-server=utf8_general_ci
[client] # 服务端设置，终端输入mysql 无需输入密码 编码设置
default-character-set=utf8
user='root'
password='456'
[mysql]
default-character-set=utf8
配置完成后，需要重启服务端才能生效
环境变量配置
在您相应的配置文件里添加，.profile or .zshrc
PATH=$PATH:/usr/local/mysql/bin
修改密码
update mysql.user set authentication_string=password('123') where user='root' and host='localhost’;
flush privileges; # 写入设置
创建用户及授权
授权�解释
授权表
user #该表放行的权限，针对：所有数据，所有库下所有表，以及表下的所有字段
db #该表放行的权限，针对：某一数据库，该数据库下的所有表，以及表下的所有字段
tables_priv #该表放行的权限。针对：某一张表，以及该表下的所有字段
columns_priv #该表放行的权限，针对：某一个字段
按图解释：
user：放行db1，db2及其包含的所有
db：放行db1，及其db1包含的所有
tables_priv:放行db1.table1，及其该表包含的所有
columns_prive:放行db1.table1.column1，只放行该字段
创建用户
create user 'buyi'@'1.1.1.1' identified by '123';
create user 'buyi'@'192.168.1.%' identified by '123';
create user 'buyi'@'%' identified by '123';
授权
授权：对文件夹，对文件，对文件某一字段的权限
查看帮助：help grant
常用权限有：select,update,alter,delete
all可以代表除了grant之外的所有权限
针对所有库的授权:*.*
grant select on *.* to 'buyi1'@'localhost' identified by '123'; #只在user表中可以查到buyi1用户的select权限被设置为Y
针对某一数据库：db1.*
grant select on db1.* to 'buyi2'@'%' identified by '123'; #只在db表中可以查到buyi2用户的select权限被设置为Y
针对某一个表：db1.t1
grant select on db1.t1 to 'buyi3'@'%' identified by '123'; #只在tables_priv表中可以查到buyi3用户的select权限
针对某一个字段：
mysql> select * from t3;
+------+-------+------+
| id | name | age |
+------+-------+------+
| 1 | buyi1 | 18 |
| 2 | buyi2 | 19 |
| 3 | buyi3 | 29 |
+------+-------+------+
grant select (id,name),update (age) on db1.t3 to 'buyi4'@'localhost' identified by '123';
可以在tables_priv和columns_priv中看到相应的权限
mysql> select * from tables_priv where user='buyi4'\G
mysql> select * from columns_priv where user='buyi4'\G
删除权限
revoke select,update on db1.student from 'lili'@localhost;
mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> select host,user from user;
+-----------+-----------+
| host | user |
+-----------+-----------+
| % | buyi |
| localhost | jack |
| localhost | lili |
| localhost | mysql.sys |
| localhost | root |
| localhost | tom |
+-----------+-----------+
6 rows in set (0.00 sec)
mysql> select * from tables_priv;
+-----------+-----+-----------+------------+----------------+---------------------+---------------+---------------+
| Host | Db | User | Table_name | Grantor | Timestamp | Table_priv | Column_priv |
+-----------+-----+-----------+------------+----------------+---------------------+---------------+---------------+
| localhost | sys | mysql.sys | sys_config | root@localhost | 2017-09-04 11:37:51 | Select | |
| localhost | db1 | lili | student | root@localhost | 0000-00-00 00:00:00 | Select,Update | |
| localhost | db1 | jack | teacher | root@localhost | 0000-00-00 00:00:00 | Select | |
| localhost | db1 | tom | course | root@localhost | 0000-00-00 00:00:00 | | Select,Update |
+-----------+-----+-----------+------------+----------------+---------------------+---------------+---------------+
4 rows in set (0.00 sec)
mysql> select * from columns_priv;
+-----------+-----+------+------------+-------------+---------------------+---------------+
| Host | Db | User | Table_name | Column_name | Timestamp | Column_priv |
+-----------+-----+------+------------+-------------+---------------------+---------------+
| localhost | db1 | tom | course | name | 0000-00-00 00:00:00 | Select,Update |
| localhost | db1 | tom | course | 周期 | 0000-00-00 00:00:00 | Select,Update |
+-----------+-----+------+------------+-------------+---------------------+---------------+
2 rows in set (0.00 sec)
mysql> revoke select,update on db1.student from 'lili'@localhost;
Query OK, 0 rows affected (0.00 sec)
mysql> select * from tables_priv;
+-----------+-----+-----------+------------+----------------+---------------------+------------+---------------+
| Host | Db | User | Table_name | Grantor | Timestamp | Table_priv | Column_priv |
+-----------+-----+-----------+------------+----------------+---------------------+------------+---------------+
| localhost | sys | mysql.sys | sys_config | root@localhost | 2017-09-04 11:37:51 | Select | |
| localhost | db1 | jack | teacher | root@localhost | 0000-00-00 00:00:00 | Select | |
| localhost | db1 | tom | course | root@localhost | 0000-00-00 00:00:00 | | Select,Update |
+-----------+-----+-----------+------------+----------------+---------------------+------------+---------------+
3 rows in set (0.00 sec)
mysql> revoke select on db1.teacher from 'jack'@localhost;
Query OK, 0 rows affected (0.00 sec)
mysql> revoke select(name,周期),update(name,周期) on db1.course from 'tom'@localhost;
Query OK, 0 rows affected (0.00 sec)
查看账户信息
select * from user\G
删除用户
mysql> drop user jack@localhost;
Query OK, 0 rows affected (0.00 sec)
mysql> drop user lili@localhost;
Query OK, 0 rows affected (0.00 sec)
