修改数据库的编码格式：
ALTER DATABASE testGoldAccount_db CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci;
批量修改表编码格式：
SELECT
CONCAT("ALTER TABLE `", TABLE_NAME,"` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;")
AS target_tables
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA="databasesName"
AND TABLE_TYPE="BASE TABLE"
这里会得出所有表的语句，然后复制查询出来的进行执行就好了
image.png
