MySQL 支持 emoji 图标存储

Error: ER_TRUNCATED_WRONG_VALUE_FOR_FIELD: 
Incorrect string value: '\xF0\x9F\x91\xBD\xF0\x9F...' for column 'name' at row

# 对每一个数据库:
ALTER DATABASE 这里数据库名字 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci;
# 对每一个表:
ALTER TABLE 这里是表名字 CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
# 对每一个字段:
ALTER TABLE 这里是表名字 CHANGE 字段名字 重复字段名字 VARCHAR(191) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
# 上面一句或者使用modify来更改
ALTER TABLE 这里是表名字 modify 字段名字 VARCHAR(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci DEFAULT '';

# 进入这个目录，
# 在这个目录下面有个后缀为`.cnf`的文件
cd /usr/local/mysql/support-files/
# 将这个文件复制到`etc`目录中并将名字命名为`my.cnf`
sudo cp my-default.cnf /etc/my.cnf
# 然后编辑`my.cnf`文件，将下面内容复制到里面。
sudo vim /etc/my.cnf

[client]
default-character-set = utf8mb4
[mysql]
default-character-set = utf8mb4
[mysqld]
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci

service mysqld stop
service mysqld start
service mysqld restart

# 登陆MySQL进行查询
mysql> SHOW VARIABLES WHERE Variable_name LIKE 'character\_set\_%' OR Variable_name LIKE 'collation%';
# 运行上面代码显示下面结果
# +--------------------------+--------------------+
# | Variable_name            | Value              |
# +--------------------------+--------------------+
# | character_set_client     | utf8mb4            |
# | character_set_connection | utf8mb4            |
# | character_set_database   | utf8mb4            |
# | character_set_filesystem | binary             |
# | character_set_results    | utf8mb4            |
# | character_set_server     | utf8mb4            |
# | character_set_system     | utf8               |
# | collation_connection     | utf8mb4_unicode_ci |
# | collation_database       | utf8mb4_unicode_ci |
# | collation_server         | utf8mb4_unicode_ci |
# +--------------------------+--------------------+
# 查看表的情况
mysql>  SHOW FULL COLUMNS  FROM  users_profile;

REPAIR TABLE 表名字;
OPTIMIZE TABLE 表名字;