Hi, I'm using the following table (shortened, removed unnecessary columns) to store a menu tree.
class MenuNode(Base): __tablename__ = 'menu' id = Column(Integer, primary_key=True, nullable=False, unique=True) parent_id = Column(Integer, ForeignKey('menu.id', onupdate='CASCADE', ondelete='CASCADE'), nullable=True, index=True) name = Column(String(64), nullable=False) parent = relationship('MenuNode', remote_side='MenuNode.id', cascade='all, delete', passive_deletes=True, backref=backref('children', order_by=position)) Top-level menu nodes have parent_id=NULL. When deleting a node via session.delete(node) sqlalchemy issues UPDATE statements to set all children's parent_id fields to NULL instead of deleting the children. How can i tell SA that I want to delete any children? -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalch...@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.