fromsqlalchemyimportcreate_engine, ForeignKeyfromsqlalchemy.ext.declarativeimportdeclarative_basefromsqlalchemyimportColumn, String, Integer, Tablefromsqlalchemy.ormimportrelationship, sessionmaker 一、表结构设计 engine = create_engine("mysql+pymysql://root:root@localhost/study?charset=utf8", echo=True)#...
ext.declarative import declarative_base from sqlalchemy import Column, Integer, String, DateTime, Boolean engine = create_engine('mysql+pymysql://username:passwd@localhost:port/db?charset=utf8', max_overflow=5) # max_overflow 最多多几个连接 Base = declarative_base() Session = sessionmaker(bind...
from sqlalchemy import Table, MetaData, Columnfrom sqlalchemy.dialects.mysql import INTEGER, VARCHARengine = create_async_engine( "mysql+asyncmy://root:123456@82.157.146.194/mysql")async def get_data(): # 构建数据库表 table = Table( "girl", # 表名 MetaData(), # MetaData() 实例 # 表...
#引入需要的模块fromsqlalchemyimportColumn, String, Integer, ForeignKey#创建模型类classUser(BaseModel):#定义表名__tabelname__="tbl_user"#创建字段类型id = Column(Integer, primary_key=True) name= Column(String(50)) age=Column(Integer)classAuthor(BaseModel):__tablename__="tbl_author"id= Column...
(Base): ''' # 定义诊疗项目明细对象: ''' __tablename__ = 'details_of_drugs_items' # 表的结构: id = Column(String(64), primary_key=True) 结算编号 = Column(String(64), index=True) 单价= Column(Float) 数量= Column(Float) 总金额 = Column(Float) 结算日期 = Column(DateTime) def ...
conn = mysql_engine.connection() #得到连接对象rsscategory = Table('rss_category',mysql_engine,Column('id',Integer,primary_key = True),Column('name',String,nullable = True),Column('tbuseraccountsinfolisttemptest',String,nullable=True),Column('sum',Number,nullable=True)) ...
String对应namefromsqlalchemyimportColumn, Integer, String#声名BaseBase = declarative_base()#User类就是对应于 __tablename__ 指向的表,也就是数据表students的映射classUser(Base):#students表是我本地数据库testdab中已存在的__tablename__ ='students'id = Column(Integer, primary_key=True, auto...
示例 ```typescript // 定义实体 @Entity() export class User { @PrimaryGeneratedColumn() id: number; @Column() username: string; @Column() email: string; } // 查询用户 const userRepository = getRepository(User); userRepository.findOne({ email: 'example@example.com' }).then(user => {...
from sqlalchemy import Table, Column, Integer, String from sqlalchemy.orm import mapper from yourapplication.database import metadata, db_session class User(object): query = db_session.query_property() def __init__(self, name=None, email=None): self.name = name self.email = email def _...
name = db.Column(db.String(50)) def __init__(self, name): self.name = name def __repr__(self): return '<Category %r>' % self.name 首先让我们创建一些对象: >>> py = Category('Python') >>> p = Post('Hello Python!', 'Python is pretty cool', py) ...