mysql - Symfony3 QueryBuilder使用子查询更新

我尝试了以下内容：

 $subQuery = $this->createQueryBuilder('teachingEvent')->select('teachingEvent.id')
        ->leftJoin('teachingEvent.timeTableEntry', 'timeTableEntry')
        ->leftJoin('timeTableEntry.course', 'course')
        ->where('course.school = :school' )
        ->andWhere('teachingEvent.date >= :fromDate')
        ->andWhere('teachingEvent.date <= :toDate')
        ->setParameters(array(':fromDate' => $from, ':toDate' => $to, ':school' => $school))
        ->getDQL();


    $query = $this->createQueryBuilder('teachingEvent')
        ->update()
        ->set('teachingEvent.schoolFreeDate', ':schoolFreeDate')
        ->where('teachingEvent.id IN ' . $subQuery)
        ->getQuery();

    return $query->getResult();

当我转出子查询时，我得到了：


  “从AppBundle \ Entity \ TeachingEvent进行选择SELECT TeachingEvent.id \ Entity \ TeachingEvent TeachingEvent左联接教导事件.timeTableEntry timeTableEntry左联接timeTableEntry.course课程WHERE course.school =：


对我来说，现在应该可以工作了-但我收到以下错误消息


  [语法错误]行0，列136：错误：预期文字，获取了'teachingEvent'


如果有人可以找到该错误，那就更好了。

感谢你！

新年快乐 ;）！

最佳答案

您还可以通过先从第一个查询构建器获取对象，然后进行所需的更新来执行相同操作

$teachingEvents =  $this->createQueryBuilder('teachingEvent')
                        ->select('teachingEvent')
                        ->leftJoin('teachingEvent.timeTableEntry', 'timeTableEntry')
                        ->leftJoin('timeTableEntry.course', 'course')
                        ->where('course.school = :school' )
                        ->andWhere('teachingEvent.date >= :fromDate')
                        ->andWhere('teachingEvent.date <= :toDate')
                        ->setParameters(array(':fromDate' => $from, ':toDate' => $to, ':school' => $school))
                        ->getQuery()
                        ->getResult();

foreach($teachingEvents as $teachingEvent){
    $teachingEvents->setSchoolFreeDate($someDate);
    $em->persist($teachingEvents);
    /* $em->flush(); flush here or after loop */
}

$em->flush();