fkNil          = map[string]any{}
		setMap         = make(map[string]any, len(op.Set))
		ownerPKNames   []string
		ownerFKNames   []string
		primaryColumns []any
		foreignColumns []any
	)

	for _, a := range op.Set {
		setMap[a.Column.Name] = a.Value
	}

	for _, ref := range rel.References {
		fkNil[ref.ForeignKey.DBName] = nil