MYSQL 字符集

更改MYSQL字段的编码为UTF8MB4

ALTER TABLE share_zodiacshare MODIFY COLUMN zodiac_chinese VARCHAR(6) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

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查看三种MySQL字符集的方法

1. 查看MySQL数据库服务器和数据库MySQL字符集。

mysql> show variables like '%char%';  
+--------------------------+-------------------------------------+------  
| Variable_name            | Value                               |......  
+--------------------------+-------------------------------------+------  
| character_set_client     | utf8                                |......   -- 客户端字符集  
| character_set_connection | utf8                                |......  
| character_set_database   | utf8                                |......   -- 数据库字符集  
| character_set_filesystem | binary                              |......  
| character_set_results    | utf8                                |......  
| character_set_server     | utf8                                |......   -- 服务器字符集  
| character_set_system     | utf8                                |......  
| character_sets_dir       | D:\MySQL Server 5.0\share\charsets\ |......  
+--------------------------+-------------------------------------+------ 

2. 查看MySQL数据表（table）的MySQL字符集。

mysql> show table status from sqlstudy_db like '%countries%';  
+-----------+--------+---------+------------+------+-----------------+------  
| Name      | Engine | Version | Row_format | Rows | Collation       |......  
+-----------+--------+---------+------------+------+-----------------+------  
| countries | InnoDB |      10 | Compact    |   11 | utf8_general_ci |......  
+-----------+--------+---------+------------+------+-----------------+------ 

3. 查看MySQL数据列（column）的MySQL字符集。

mysql> show full columns from countries;  
+----------------------+-------------+-----------------+--------  
| Field                | Type        | Collation       | .......  
+----------------------+-------------+-----------------+--------  
| countries_id         | int(11)     | NULL            | .......  
| countries_name       | varchar(64) | utf8_general_ci | .......  
| countries_iso_code_2 | char(2)     | utf8_general_ci | .......  
| countries_iso_code_3 | char(3)     | utf8_general_ci | .......  
| address_format_id    | int(11)     | NULL            | .......  
+----------------------+-------------+-----------------+--------  

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参考：

查看三种MySQL字符集的方法
mysql修改表、字段、库的字符集