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摘要： from sqlalchemy.orm import sessionmaker from sqlalchemy_M2M import engine, Girls, Boys Session = sessionmaker(engine) db_session = Session() # 1.通过Boy添加Girl relationship 反向 boy = Boys(name='XJ') bo... 阅读全文

摘要： from sqlalchemy.ext.declarative import declarative_base from sqlalchemy import Column, Integer, String, ForeignKey from sqlalchemy.orm import relationship Base = declarative_base() class Girls(Base... 阅读全文

摘要： # 查询更多操作 from create_table import User, engine from sqlalchemy.orm import sessionmaker Session = sessionmaker(engine) db_session = Session() # 表达式!!! # res = db_session.query(User).filter(User.id=... 阅读全文

摘要： # 添加数据 from sqlalchemy.orm import sessionmaker from create_table_ForeignKey import engine, Student, School Session = sessionmaker(engine) db_session = 阅读全文

摘要： # 一对多建表操作 from sqlalchemy.ext.declarative import declarative_base Base = declarative_base() from sqlalchemy.orm import relationship from sqlalchemy import Column, Integer, String, ForeignKey class ... 阅读全文

摘要： #通过SQLAlchemy对数据库进行增删改查 # 想要操作数据库 先要打开数据库连接 from create_table import engine # 创建会话 - 打开数据库连接 from sqlalchemy.orm import sessionmaker # 创建会话窗口 Session 阅读全文

摘要： # 1. 导入SQLAlchemy from sqlalchemy.ext.declarative import declarative_base from sqlalchemy import Column, Integer, String # 2.ORM 模型基类 Base = declarative_base() # 相当于Django model # 3. 创建ORM对象 class... 阅读全文