Symfony /主义错误：“未定义类'FROM'。” 在getResult（）上

Question

我正在开发我的第一个symfony应用程序，同时尝试使用queryBuilder时，我已经为这个问题苦苦挣扎了几个小时。

我正在尝试执行SQL查询，但出现以下错误：

request.CRITICAL：未捕获的PHP异常Doctrine \ ORM \ Query \ QueryException：“ [语义错误]第0行，'FROM StatsBundle \ Entity \ PlayerRealMatch'附近的第288行：错误：未定义类'FROM'。”

基本上，我存储的是足球运动员的评分和目标，现在我想检索这些值的总和和平均值。

我在服务中，并且在PlayerRealMatchRepository中调用一个方法，该方法的核心代码如下：

        $qb = $this->createQueryBuilder('prm');
        $qb->select(
            "SUM(prm.has_started) as tit,
            SUM(prm.has_entered) as rempl,
            SUM(prm.yellow_cards) as yc,
            SUM(prm.red_card) as rc,
            SUM(prm.goals) AS gf,
            SUM(prm.own_goals) as ga,
            AVG(prm.rating) as avg"
        )
            ->innerJoin('prm.realMatch', 'rm')
            ->where('prm.playerId = :idPlayer')
            ->groupBy('rm.season')
            ->setParameter('idPlayer', $player->getId())
            ->getQuery();
        $query =$qb->getQuery();
        $seasonData = $query->getResult();

如果我使用调试器查看$ query对象的_dql属性，则将具有以下内容：

SELECT SUM(prm.has_started) as tit,
                SUM(prm.has_entered) as rempl,
                SUM(prm.yellow_cards) as yc,
                SUM(prm.red_card) as rc,
                SUM(prm.goals) AS gf,
                SUM(prm.own_goals) as ga,
                AVG(prm.rating) as avg 
FROM StatsBundle\Entity\PlayerRealMatch prm 
INNER JOIN prm.realMatch rm 
WHERE prm.playerId = :idPlayer 
GROUP BY rm.season

对我来说看起来并不那么糟糕，你们对这里的问题有任何线索吗？

注意：这是我尝试实现的查询示例，该查询可在我的数据库上直接正常运行：

SELECT SUM(prm.has_started) as tit,
                SUM(prm.has_entered) as rempl,
                SUM(prm.yellow_cards) as yc,
                SUM(prm.red_card) as rc,
                SUM(prm.goals) AS gf,
                SUM(prm.own_goals) as ga,
                AVG(prm.rating) as avg 
FROM player_real_match prm 
INNER JOIN real_match rm ON prm.real_match_id = rm.id 
WHERE prm.player_id = 327 
GROUP BY rm.season;

详情如下

3个实体：

• 播放器
• RealMatch：有关比赛的常规数据
• PlayerRealMatch：比赛中一名球员的表现

以下是它们各自配置的摘录，以显示它们如何链接。

StatsBundle\Entity\Player: 
...
    manyToOne:
        real_team:
            targetEntity: RealTeam
            inversedBy: players
            joinColumn:
                onDelete: CASCADE
                name: real_team_id
                referencedColumnName: id
    oneToMany:
        player_real_matches:
            targetEntity: PlayerRealMatch
            mappedBy: player 
...

---

StatsBundle\Entity\RealMatch:
...
    home_team:
        targetEntity: RealTeam
        inversedBy: home_matches
        joinColumn:
            onDelete: CASCADE
            name: home_team_id
            referencedColumnName: id
    away_team:
        targetEntity: RealTeam
        inversedBy: away_matches
        joinColumn:
            onDelete: CASCADE
            name: away_team_id
            referencedColumnName: id
oneToMany:
    player_real_matches:
        targetEntity: PlayerRealMatch
        mappedBy: real_match
...

---

StatsBundle\Entity\PlayerRealMatch:
...
manyToOne:
    real_match:
        targetEntity: RealMatch
        inversedBy: player_real_matches
        joinColumn:
            onDelete: CASCADE
            name: real_match_id
            referencedColumnName: id
    player:
        targetEntity: Player
        inversedBy: player_real_matches
        joinColumn:
            onDelete: CASCADE
            name: player_id
            referencedColumnName: id
...

---

从服务调用存储库方法

    foreach ($players as $player) {
        $this->aggregatePlayerData($player, $match);
    }

    private function aggregatePlayerData(Player $player, RealMatch $match)
    {
        $playerStats = $this->_em
            ->getRepository('StatsBundle:PlayerRealMatch')
            ->getAggregatedStats($player, $match);
    }

public function __construct(EntityManager $entityManager)
{
    $this->_em = $entityManager;
}

这是关于我的服务的services.yml

stats.aggregator:
    class: StatsBundle\Service\Aggregator
    arguments: [ "@doctrine.orm.entity_manager"]

储存库方法

 /**
 * getAggregatedStats
 *
 * @param $player the player entity
 * @param RealMatch $match  the real match entity
 *
 * @return array
 */
public function getAggregatedStats($player, RealMatch $match)
{

    $qb = $this->createQueryBuilder('prm');
    $qb->select(
        "SUM(prm.has_started) as tit,
        SUM(prm.has_entered) as rempl,
        SUM(prm.yellow_cards) as yc,
        SUM(prm.red_card) as rc,
        SUM(prm.goals) AS gf,
        SUM(prm.own_goals) as ga,
        AVG(prm.rating) as avg"
    )
    ->from('StatsBundle:PlayerRealMatch', 'prm')
    ->innerJoin('prm.realMatch', 'rm')
    ->where('prm.playerId = :idPlayer')
    ->groupBy('rm.season')
    ->setParameter('idPlayer', $player->getId())
    ->getQuery();
    $query = $qb->getQuery();
    $seasonData = $query->getResult();

    return $seasonData;
}

抱歉，我的帖子很长，我试图尽可能清楚地记录下来。非常感谢您的帮助 ！

Answer 1

您正在尝试将保留的sql字用作列名，请尝试更改

"AVG(prm.rating) as avg" -> "AVG(prm.rating) as avgRating"