primary_key=True)nickname=db.Column(db.Unicode(),default='noname')asyncdefmain():# 请根据实际情况,添加用户名和密码# 示例:postgresql://zillionare:123456@localhost/gino# 并在本地postgres数据库中,创建gino数据库。
await conn.run_sync(Base.metadata.create_all) await insert_objects(async_session) await select_and_update_objects(async_session) # for AsyncEngine created in function scope, close and # clean-up pooled connections await engine.dispose() asyncio.run(async_main()) 3.代码分析 主要看这行代码,cr...
engine = create_async_engine(DATABASE_URL, echo=True) AsyncSessionLocal = sessionmaker(bind=engine, class_=AsyncSession, expire_on_commit=False) async def init_db(): async with engine.begin() as conn: await conn.run_sync(Base.metadata.create_all) # 示例:如何插入数据并进行查询 async def ...
self.metadata.create_all(self.engine) def message_cls(self): """ 初始化类tyt_verify_log表的抽象信息 :return: """ return Table( "tyt_verify_log", self.metadata, autoload=True, aotoload_with=self.engine ) message_cls = MessageManage().message_cls() async def get_message_by_id(id: s...
在异步环境中,批量插入对象通常需要使用异步方法来执行数据库操作。由于bulk_insert_mappings在 SQLAlchemy 的异步版本中可能不直接支持,你可以使用add_all方法来批量添加对象。 asyncdefsave_import(self, data: List[DtoType], db: AsyncSession) ->bool:"""批量导入对象"""try:#将 DTO 转换为模型实例db_objs...
对于异步操作,SQLAlchemy 使用AsyncSession来管理异步事务。 首先,定义一个异步的Session和Engine对象: fromsqlalchemyimportcreate_engine, URLfromsqlalchemy.ext.asyncioimportAsyncSession, async_sessionmaker, create_async_enginefromtypingimportAsyncGeneratordefcreate_engine_and_session(url: str |URL):try:#数据库...
app.get('/products', async (req, res) => { const products = await Product.findAll(); res.json(products); }); // 启动服务器 app.listen(3000, () => console.log('Server is running on port 3000')); 3. Java (Spring Boot + JPA 后端示例) ...
engine = create_async_engine( URL.create("mysql+asyncmy", username="root", password="123456", host="82.157.146.194", port=3306, database="mysql") ) 以上我们就创建了一个异步引擎,创建方式和同步引擎没什么区别,它们的参数也都是一样的。
(cls,query,*arg,**kw):raiseNotImplementedError()@classmethoddefas_unique(cls,session,*arg,**kw):return_unique(session,cls,cls.unique_hash,cls.unique_filter,cls,arg,kw)# optional asyncio version as well@classmethodasyncdefasync_as_unique(cls,async_session,*arg,**kw):returnawaitasync_session....
fetchall() if result: return {"users": result} else: return {"error": "User not found"} @app.get("/users/{user_id}") async def get_user(user_id: int, db: cursor.MySQLCursor = Depends(get_db)): query = "SELECT * FROM users WHERE id = %s" db.execute(query, (user_id,))...