from sqlalchemy import Column, Integer, String, Date, Float, Numeric, ForeignKey
from sqlalchemy import create_engine
from sqlalchemy.orm import relationship
SQ_URL = "mysql+pymysql://root:123456@localhost:3306/student_system"
engine = create_engine(SQ_URL,pool_size=5,echo=True)
from database import Base
class Work(Base):
    __tablename__ = 'student_work'
    # 包含字段：学生编号ID、学生姓名、学生班级、就业开放时间、offer下发时间、就业公司名称、就业薪资
    employment_id = Column(Integer, autoincrement=True,primary_key=True)
    sid = Column(Integer,ForeignKey("student.sid"), unique=True)
    open_time = Column(Date, default="1970-01-01")
    offer_time = Column(Date, default="1970-01-01")
    company_name = Column(String(50))
    salary = Column(Numeric(10,2))
    flag = Column(Integer, default=1)
    student = relationship("Student", back_populates="work")