switch op.Type {
	case clause.OpCreate:
		return s.handleAssociationCreate(ctx, base, op)
	case clause.OpUnlink, clause.OpDelete, clause.OpUpdate:
		return s.handleAssociation(ctx, base, op)
	default:
		return fmt.Errorf("unknown association operation type: %v", op.Type)
	}
}

func (s setCreateOrUpdateG[T]) handleAssociationCreate(ctx context.Context, base *DB, op clause.Association) error {
	if len(op.Set) > 0 {