Mapper Mapper[Staff(staff)] could not assemble any primary key columns for mapped table 'staff' File "D:\360MoveData\Users\15312\Desktop\SQL\t.py", line 16, in <module> class Staff(Base): sqlalchemy.exc.ArgumentError: Mapper Mapper[Staff(staff)] could not assemble any primary key columns for mapped table 'staff'
时间: 2024-02-26 15:58:47 浏览: 255
这是一个SQLAlchemy的错误信息,意思是无法为映射表“staff”组装任何主键列。这通常是因为映射类的定义中没有指定主键列,或者指定的主键列无法被正确识别。你需要检查映射类的定义,确保指定了正确的主键列。可以在映射类的定义中使用primary_key=True参数指定主键列,例如:
```
class Staff(Base):
__tablename__ = 'staff'
id = Column(Integer, primary_key=True)
name = Column(String(50))
age = Column(Integer)
# 其他列的定义...
```
如果你已经指定了主键列,还是遇到了这个错误,那么可能是因为你的数据表中没有设置主键列,你需要在数据库中为该表设置主键列。
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