mysql查询时中文变成乱码

-- 检查数据库字符集
SHOW CREATE DATABASE your_database_name;

-- 修改数据库字符集
ALTER DATABASE your_database_name CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- 检查表字符集
SHOW CREATE TABLE your_table_name;

-- 修改表字符集
ALTER TABLE your_table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

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

SET NAMES 'utf8mb4';

import pymysql

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

mysql -u your_user -p your_database --default-character-set=utf8mb4 < your_data.sql

mysqldump -u your_user -p your_database --default-character-set=utf8mb4 > your_data.sql