无效的路径表达.必须是StateFieldPath Expression

Question

我得到了一个错误，即 [Semantical Error] line 0, col 57 near 'room FROM AppBundle:bookings': Error: Invalid PathExpression. Must be a StateFieldPathExpression.我在AppBundle中有两个实体，它们是房间和预订。执行查询后，我以前会提到错误。在这里我的查询：

$query = $em->createQuery(
                            'SELECT r ' .
                            'FROM AppBundle:Room r ' .
                            'WHERE r NOT IN ( ' .
                            'SELECT b.room ' .
                            'FROM AppBundle:Bookings b ' .
                            'WHERE NOT ( ' .
                            'b.check_out < :check_in ' .
                            'OR ' .
                            'b.check_in > :check_out ' .
                            ')' .
                            ') ' .
                            'ORDER BY r.id'
                    )
                    ->setParameter('check_in', $request->query->get('check-in'))
                    ->setParameter('check_out', $request->query->get('check-out'));

Answer 1

我认为问题是关于WHERE NOT的。尝试此查询：

$query = $em->createQuery(
                            'SELECT r ' .
                            'FROM AppBundle:Room r ' .
                            'WHERE r NOT IN ( ' .
                            'SELECT b.room ' .
                            'FROM AppBundle:Bookings b ' .
                            'WHERE  ' .
                            'b.check_out < :check_in ' .
                            'OR ' .
                            'b.check_in > :check_out ' .
                            ') ' .
                            'ORDER BY r.id'
                    )
                    ->setParameter('check_in', $request->query->get('check-in'))
                    ->setParameter('check_out', $request->query->get('check-out'));