我先说下场景，昨天因为我们使用了Java工作流框架flowable，它自动生成了许多工作流相关的表，但是这些表都有外键关联，如果单纯的使用sql语句去一个一个的删除外键，那会非常麻烦，所以我写了一个Python脚本来进行批量删除。

前提是你要有个Python环境...

因为代码非常简单，所以直接把代码粘出来，改下你mysql的连接信息，直接右键运行即可。

import mysql.connectordef delete_foreign_keys(host, port, user, password, database):try:# 连接到数据库conn = mysql.connector.connect(host=host,port=port,user=user,password=password,database=database)cursor = conn.cursor()# 查询外键约束cursor.execute("""SELECT CONSTRAINT_NAME,TABLE_NAMEFROMINFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTSWHEREUNIQUE_CONSTRAINT_SCHEMA = %s;""", (database,))foreign_keys = cursor.fetchall()# 生成删除外键约束的 SQL 语句并执行for fk in foreign_keys:constraint_name, table_name = fkcursor.execute(f"ALTER TABLE {table_name} DROP FOREIGN KEY {constraint_name};")print(f"Deleted foreign key constraint {constraint_name} from table {table_name}")conn.commit()print("All foreign key constraints deleted successfully!")except mysql.connector.Error as error:print("Error while connecting to MySQL", error)finally:if conn.is_connected():cursor.close()conn.close()print("MySQL connection is closed")# 设置数据库连接参数
host = '127.0.0.1'
port = 3306  # MySQL 默认端口号
user = 'root'
password = 'root'
database = 'mydatabase'# 调用函数删除外键约束
delete_foreign_keys(host, port, user, password, database)