72 lines
1.8 KiB
Python
72 lines
1.8 KiB
Python
from sqlalchemy import *
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from sqlalchemy.orm import declarative_base,sessionmaker
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from datetime import datetime
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db_url='mysql+pymysql://root:123456@127.0.0.1:3306/ai0824?charset=utf8mb4'
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engine=create_engine(db_url,pool_size=50,echo=True)
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Base=declarative_base()
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class Order(Base):
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__tablename__ = 'order_info_detail'
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id=Column(Integer,
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primary_key=True,
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autoincrement=True,
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comment='订单编号，自增主键'
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)
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title=Column(String(50),
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nullable=False)
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acc=Column(Integer)
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userid=Column(Integer,ForeignKey('user_info_detail.id'),nullable=False)
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create_date=Column(DATETIME,default=datetime.now)
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update_date=Column(DATETIME,
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default=datetime.now,
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onupdate=datetime.now)
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class User(Base):
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__tablename__ = 'user_info_detail'
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id=Column(Integer,
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primary_key=True,
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autoincrement=True,
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comment='用户编号,自增主键')
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username=Column(String(50),
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nullable=False,
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comment='用户名'
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)
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create_date=Column(DATETIME,
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default=datetime.now)
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update_date=Column(DATETIME,
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default=datetime.now,
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onupdate=datetime.now)
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Base.metadata.create_all(engine)
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u1=User(username="ggbone")
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print(u1.username)
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u2=User(username='fbone')
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print(u2.username)
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Session=sessionmaker(bind=engine,
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autoflush=False,
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autocommit=False
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)
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db=Session()
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db.add(u1)
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db.add(u2)
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db.commit()
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db.close()
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db=Session()
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db.query(User)\
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.filter(User.username=='ggbone')\
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.update({'username':'超人强','create_date':'2000-1-1'})
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db.commit()
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