MySQL修改默认引擎和字符集详情
作者:markLogZhu 时间:2024-01-14 21:37:27
目录
一、数据库引擎
1.1 查看数据库引擎
1.2 修改默认数据库引擎
二、数据库字符集
2.1 查看字符集
2.2 修改字符集
一、数据库引擎
1.1 查看数据库引擎
mysql> show engines;
+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
| Engine | Support | Comment | Transactions | XA | Savepoints |
+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
| InnoDB | DEFAULT | Supports transactions, row-level locking, and foreign keys | YES | YES | YES |
| MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO | NO |
| MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO |
| BLACKHOLE | YES | /dev/null storage engine (anything you write to it disappears) | NO | NO | NO |
| MyISAM | YES | MyISAM storage engine | NO | NO | NO |
| CSV | YES | CSV storage engine | NO | NO | NO |
| ARCHIVE | YES | Archive storage engine | NO | NO | NO |
| PERFORMANCE_SCHEMA | YES | Performance Schema | NO | NO | NO |
| FEDERATED | NO | Federated MySQL storage engine | NULL | NULL | NULL |
+--------------------+---------+----------------------------------------------------------------+--------------+------+------------+
9 rows in set (0.00 sec)
可以看到默认引擎是 InnoDB
。
1.2 修改默认数据库引擎
1.打开配置文件
[root@VM_0_15_centos ~]# vim /etc/my.cnf
2.在最下面编辑如下内容:
default-storage-engine=InnoDB
3.重启服务
[root@VM_0_15_centos ~]# systemctl restart mysqld
二、数据库字符集
2.1 查看字符集
查看MYSQL数据库服务器和数据库字符集
mysql> show variables like '%character%';
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | latin1 |
| character_set_filesystem | binary |
| character_set_results | utf8 |
| character_set_server | latin1 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.01 sec)
字符集 | 作用 |
---|---|
character_set_client | 用来设置客户端使用的字符集。 |
character_set_connection | 用来设置连接数据库时的字符集 |
character_set_database | 用来设置默认创建数据库的编码格式 |
character_set_filesystem | 文件系统的编码格式,把操作系统上的文件名转化成此字符集,默认binary是不做任何转换的 |
character_set_results | 查询结果字符集 |
character_set_server | 服务器安装时指定的默认编码格式 |
character_set_system | 系统元数据(字段名等)字符集 |
character_sets_dir | 字符集安装的目录 |
查看 MYSQL 所支持的字符集
show charset;
查看库的字符集
show database status from 库名 like 表名;
查看表的字符集
show table status from 库名 like 表名;
查看表中所有列的字符集
show full columns from 表名;
2.2 修改字符集
1.打开配置文件
[root@VM_0_15_centos ~]# vim /etc/my.cnf
2.在最下面编辑如下内容:
character-set-server=utf8
[client]
default-character-set=utf8
3.重启服务并验证
[root@VM_0_15_centos ~]# systemctl restart mysqld
[root@VM_0_15_centos ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.27 MySQL Community Server (GPL)
Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show variables like '%character%';
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | utf8 |
| character_set_filesystem | binary |
| character_set_results | utf8 |
| character_set_server | utf8 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)
来源:https://www.cnblogs.com/markLogZhu/p/11397931.html
标签:MySQL,修改默认引擎,修改字符集
![](/images/zang.png)
![](/images/jiucuo.png)
猜你喜欢
vue+elementui+vuex+sessionStorage实现历史标签菜单的示例代码
2024-04-30 10:26:30
![](https://img.aspxhome.com/file/2023/8/130208_0s.png)
numpy的文件存储.npy .npz 文件详解
2023-02-08 17:16:35
python多线程分块读取文件
2023-10-29 18:48:51
将mysql转换到oracle必须了解的50件事
2010-07-05 12:15:00
PyTorch 随机数生成占用 CPU 过高的解决方法
2021-09-23 09:12:31
js实现简易垂直滚动条
2024-05-22 10:34:53
![](https://img.aspxhome.com/file/2023/4/123444_0s.png)
Python基于checksum计算文件是否相同的方法
2022-11-08 20:30:48
asp javascript值的互相传递方法
2011-03-30 10:37:00
python执行get提交的方法
2022-08-09 01:53:12
js删除数组中指定元素的几种方式
2024-04-10 10:50:48
Python‘==‘ 及 ‘is‘相关原理解析
2021-10-11 15:16:59
PHP实现的AES加密、解密封装类与用法示例
2023-07-23 12:56:45
python moviepy 的用法入门篇
2022-09-03 11:41:16
![](https://img.aspxhome.com/file/2023/5/131325_0s.png)
代码详解Python的函数基础(1)
2023-08-16 17:47:22
HTML5 第二份草案发布
2008-06-17 17:42:00
通过5个例子让你学会Pandas中的字符串过滤
2022-10-09 03:44:36
![](https://img.aspxhome.com/file/2023/0/120340_0s.jpg)
详解centos7+django+python3+mysql+阿里云部署项目全流程
2024-01-24 15:10:54
![](https://img.aspxhome.com/file/2023/0/117320_0s.jpg)
python多进程执行方法apply_async使用说明
2023-01-31 11:56:10
讲解数据库加密技术的功能特性与实现方法
2008-12-18 14:24:00
mysql-connector-java与mysql版本的对应关系说明
2024-01-19 07:35:36
![](https://img.aspxhome.com/file/2023/2/66142_0s.png)