一、查看字符集
1.查看MYSQL数据库服务器和数据库字符集
方法一:show variables like '%character%';
方法二:show variables like 'collation%';
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/local/mysql5535/share/charsets/ |
+--------------------------+--------------------------------------+
8 rows in set (0.00 sec)
方法一:
mysql> show variables like 'collation%';
+----------------------+-----------------+
| Variable_name | Value |
+----------------------+-----------------+
| collation_connection | utf8_general_ci |
| collation_database | utf8_general_ci |
| collation_server | utf8_general_ci |
+----------------------+-----------------+
3 rows in set (0.00 sec)
方法二:
2.查看MYSQL所支持的字符集
show charset;
mysql> show charset;
+----------+-----------------------------+---------------------+--------+
| Charset | Description | Default collation | Maxlen |
+----------+-----------------------------+---------------------+--------+
| big5 | Big5 Traditional Chinese | big5_chinese_ci | 2 |
| dec8 | DEC West European | dec8_swedish_ci | 1 |
| cp850 | DOS West European | cp850_general_ci | 1 |
| hp8 | HP West European | hp8_english_ci | 1 |
| koi8r | KOI8-R Relcom Russian | koi8r_general_ci | 1 |
| latin1 | cp1252 West European | latin1_swedish_ci | 1 |
| latin2 | ISO 8859-2 Central European | latin2_general_ci | 1 |
| swe7 | 7bit Swedish | swe7_swedish_ci | 1 |
| ascii | US ASCII | ascii_general_ci | 1 |
| ujis | EUC-JP Japanese | ujis_japanese_ci | 3 |
| sjis | Shift-JIS Japanese | sjis_japanese_ci | 2 |
| hebrew | ISO 8859-8 Hebrew | hebrew_general_ci | 1 |
| tis620 | TIS620 Thai | tis620_thai_ci | 1 |
| euckr | EUC-KR Korean | euckr_korean_ci | 2 |
| koi8u | KOI8-U Ukrainian | koi8u_general_ci | 1 |
| gb2312 | GB2312 Simplified Chinese | gb2312_chinese_ci | 2 |
| greek | ISO 8859-7 Greek | greek_general_ci | 1 |
| cp1250 | Windows Central European | cp1250_general_ci | 1 |
| gbk | GBK Simplified Chinese | gbk_chinese_ci | 2 |
| latin5 | ISO 8859-9 Turkish | latin5_turkish_ci | 1 |
| armscii8 | ARMSCII-8 Armenian | armscii8_general_ci | 1 |
| utf8 | UTF-8 Unicode | utf8_general_ci | 3 |
| ucs2 | UCS-2 Unicode | ucs2_general_ci | 2 |
| cp866 | DOS Russian | cp866_general_ci | 1 |
| keybcs2 | DOS Kamenicky Czech-Slovak | keybcs2_general_ci | 1 |
| macce | Mac Central European | macce_general_ci | 1 |
| macroman | Mac West European | macroman_general_ci | 1 |
| cp852 | DOS Central European | cp852_general_ci | 1 |
| latin7 | ISO 8859-13 Baltic | latin7_general_ci | 1 |
| utf8mb4 | UTF-8 Unicode | utf8mb4_general_ci | 4 |
| cp1251 | Windows Cyrillic | cp1251_general_ci | 1 |
| utf16 | UTF-16 Unicode | utf16_general_ci | 4 |
| cp1256 | Windows Arabic | cp1256_general_ci | 1 |
| cp1257 | Windows Baltic | cp1257_general_ci | 1 |
| utf32 | UTF-32 Unicode | utf32_general_ci | 4 |
| binary | Binary pseudo charset | binary | 1 |
| geostd8 | GEOSTD8 Georgian | geostd8_general_ci | 1 |
| cp932 | SJIS for Windows Japanese | cp932_japanese_ci | 2 |
| eucjpms | UJIS for Windows Japanese | eucjpms_japanese_ci | 3 |
+----------+-----------------------------+---------------------+--------+
39 rows in set (0.00 sec)
查看MYSQL所支持的字符集
3.查看库的字符集
语法:show database status from 库名 like 表名;
mysql> show create database shiyan\G
*************************** 1. row ***************************
Database: shiyan
Create Database: CREATE DATABASE `shiyan` /*!40100 DEFAULT CHARACTER SET gbk */
1 row in set (0.00 sec)
4.查看表的字符集
语法:show table status from 库名 like 表名;
mysql> show table status from class_7 like 'test_info';
mysql> show table status from class_7 like 'test_info';
+-----------+--------+---------+------------+------+----------------+-------------------------+-------------+------------+-----------------+----------+-
| Name | Engine | Version | Row_format | Rows | Avg_row_length | Data_leate_time | Update_time | Check_time | Collation | Checksum |
+-----------+--------+---------+------------+------+----------------+-------------------------+-------------+------------+-----------------+----------+-
| test_info | InnoDB | 10 | Compact | 10 | 1638 | 17-12-05 19:01:55 | NULL | NULL | utf8_general_ci | NULL |
+-----------+--------+---------+------------+------+----------------+-------------------------+-------------+------------+-----------------+----------+-
1 row in set (0.00 sec)
查看表的字符集
5.查看表中所有列的字符集
语法:show full columns from 表名;
mysql> show full columns from test_info;
mysql> show full columns from test_info;
+-------+----------+-----------------+------+-----+---------+-------+---------------------------------+---------+
| Field | Type | Collation | Null | Key | Default | Extra | Privileges | Comment |
+-------+----------+-----------------+------+-----+---------+-------+---------------------------------+---------+
| id | int(3) | NULL | NO | PRI | NULL | | select,insert,update,references | |
| name | char(12) | utf8_general_ci | YES | | NULL | | select,insert,update,references | |
| dorm | char(10) | utf8_general_ci | YES | | NULL | | select,insert,update,references | |
| addr | char(12) | utf8_general_ci | YES | | 未知 | | select,insert,update,references | |
| score | int(3) | NULL | YES | | NULL | | select,insert,update,references | |
+-------+----------+-----------------+------+-----+---------+-------+---------------------------------+---------+
5 rows in set (0.00 sec)
所有列的字符集
二、设置字符集
设置字符集一般有两种方法,一种是在创建表的时候设置字符集,另一种是表建成之后修改字符集。
1.创建时指定字符集
创建库的时候指定字符集:
语法:create database 库名 default character set=字符集;
create database db2 default character set=utf8
创建表的时候指定字符集:
语法:create table 表名(属性)default character set = 字符集;
mysql> create table test1(id int(6),name char(10)) default character set = 'gbk';
Query OK, 0 rows affected (0.39 sec)
2.修改字符集
修改全局字符集
/*建立连接使用的编码*/
set character_set_connection=utf8;
/*数据库的编码*/
set character_set_database=utf8;
/*结果集的编码*/
set character_set_results=utf8;
/*数据库服务器的编码*/
set character_set_server=utf8;
set character_set_system=utf8;
set collation_connection=utf8;
set collation_database=utf8;
set collation_server=utf8;
修改全局字符集
修改库的字符集
语法:alter database 库名 default character set 字符集;
alter database shiyan default character set gbk;
mysql> show create database shiyan\G
*************************** 1. row ***************************
Database: shiyan
Create Database: CREATE DATABASE `shiyan` /*!40100 DEFAULT CHARACTER SET utf8 */
1 row in set (0.00 sec)
mysql> alter database shiyan default character set gbk;
Query OK, 1 row affected (0.00 sec)
mysql> show create database shiyan\G
*************************** 1. row ***************************
Database: shiyan
Create Database: CREATE DATABASE `shiyan` /*!40100 DEFAULT CHARACTER SET gbk */
1 row in set (0.00 sec)
修改表的字符集
语法:alter table 表名 convert to character set 字符集;
alter table test1 convert to character set utf8;
mysql> show create table test1\G
*************************** 1. row ***************************
Table: test1
Create Table: CREATE TABLE `test1` (
`id` int(6) DEFAULT NULL,
`name` char(10) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=gbk #原字符集
1 row in set (0.00 sec)
mysql> alter table test1 convert to character set utf8;
Query OK, 0 rows affected (0.58 sec)
Records: 0 Duplicates: 0 Warnings: 0
mysql> show create table test1\G
*************************** 1. row ***************************
Table: test1
Create Table: CREATE TABLE `test1` (
`id` int(6) DEFAULT NULL,
`name` char(10) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 #修改后的字符集
1 row in set (0.00 sec)
修改列表的字符集
修改字段的字符集
语法:alter table 表名 modify 字段名 字段属性 character set gbk;
alter table test1 modify name char(10) character set gbk;
mysql> show full columns from test1;
+-------+----------+-----------------+------+-----+---------+-------+---------------------------------+---------+
| Field | Type | Collation | Null | Key | Default | Extra | Privileges | Comment |
+-------+----------+-----------------+------+-----+---------+-------+---------------------------------+---------+
| id | int(6) | NULL | YES | | NULL | | select,insert,update,references | |
| name | char(10) | utf8_general_ci | YES | | NULL | | select,insert,update,references | |
+-------+----------+-----------------+------+-----+---------+-------+---------------------------------+---------+
2 rows in set (0.01 sec)
mysql> alter table test1 modify name char(10) character set gbk;
Query OK, 0 rows affected (0.58 sec)
Records: 0 Duplicates: 0 Warnings: 0
mysql> show full columns from test1;
+-------+----------+----------------+------+-----+---------+-------+---------------------------------+---------+
| Field | Type | Collation | Null | Key | Default | Extra | Privileges | Comment |
+-------+----------+----------------+------+-----+---------+-------+---------------------------------+---------+
| id | int(6) | NULL | YES | | NULL | | select,insert,update,references | |
| name | char(10) | gbk_chinese_ci | YES | | NULL | | select,insert,update,references | |
+-------+----------+----------------+------+-----+---------+-------+---------------------------------+---------+
2 rows in set (0.01 sec)
修改字段的字符集
总结
到此这篇关于MySQL查看与修改字符集的文章就介绍到这了,更多相关MySQL查看与修改字符集内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!
您可能感兴趣的文章:- mysql字符集和数据库引擎修改方法分享
- MySQL修改字符集的实战教程
- mysql 启动1067错误及修改字符集重启之后复原无效问题
- Linux下MySQL 5.5/5.6的修改字符集编码为UTF8的方法
- Mysql数据库支持的存储引擎对比
- 基于 Mysql 实现一个简易版搜索引擎
- Mysql中存储引擎的区别及比较
- MySQL 学习总结 之 初步了解 InnoDB 存储引擎的架构设计
- MySQL修改默认引擎和字符集详情