создана часть бекенда

db/schemas/stock.py

@@ -1,5 +1,5 @@
 from datetime import datetime
-from sqlalchemy import Column, DateTime, Float, ForeignKey, Integer
+from sqlalchemy import Column, DateTime, Float, ForeignKey, Integer, String
 from sqlalchemy.orm import relationship
 
 from db import Base
@@ -24,6 +24,7 @@ class Stock(Base):
     )
     quantity = Column(Integer, nullable=False)
     price = Column(Float, nullable=False)
+    placement = Column(String, nullable=True)
     created_at = Column(DateTime, default=datetime.now)
     updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)