linux mysql数据库乱码

-- 查看数据库字符集和校对规则
SHOW CREATE DATABASE your_database_name;

-- 修改数据库字符集和校对规则
ALTER DATABASE your_database_name CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- 查看表字符集和校对规则
SHOW CREATE TABLE your_table_name;

-- 修改表字符集和校对规则
ALTER TABLE your_table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- 修改列字符集和校对规则
ALTER TABLE your_table_name MODIFY your_column_name VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

mysql -u your_username -p --default-character-set=utf8mb4

import pymysql

connection = pymysql.connect(
    host='your_host',
    user='your_username',
    password='your_password',
    db='your_database',
    charset='utf8mb4'
)