使用 Doctrine PHP 生成 SQL 命令时出现 SQL 错误

Question

我在 PHP Web 应用程序上使用 Doctrine 和 MySQL 数据库。我的请求有一个小问题：

$q = Doctrine_Query::create()
     ->select('event.EventDate, event.EventId, player.PlayerId, player.FirstName, 
             player.LastName, player.Login, player.Email, 
             event_period.EventPeriodId, event.Type, event.Description, 
             period.StartHour, period.EndHour, player_event_period.Participate, 
             event_period.CourtNumber')
     ->from('Event event, Player player, Period period')
     ->leftJoin('player.PlayerEventPeriod player_event_period')
     ->leftJoin('player_event_period.EventPeriod event_period')
     ->where('period.PeriodId = event_period.PeriodId')
     ->andWhere('event.EventId = event_period.EventId');

如果我显示生成的 MySQL 命令是什么，我可以看到

SELECT e.eventid AS e__eventid, e.eventdate AS e__eventdate, e.type AS e__type, e.description AS e__description, p.playerid AS p__playerid, p.firstname AS p__firstname, p.lastname AS p__lastname, p.login AS p__login, p.email AS p__email, p2.periodid AS p2__periodid, p2.starthour AS p2__starthour, p2.endhour AS p2__endhour, p3.playereventperiodid AS p3__playereventperiodid, p3.participate AS p3__participate, e2.eventperiodid AS e2__eventperiodid, e2.courtnumber AS e2__courtnumber
FROM event e, player p, period p2
LEFT JOIN player_event_period p3 ON p.playerid = p3.playerid
LEFT JOIN event_period e2 ON p3.eventperiodid = e2.eventperiodid
WHERE (
p2.periodid = e2.periodid
AND e.eventid = e2.eventid
);

错误：

#1054 - Unknown column 'p.playerid' in 'on clause'

我的请求出了什么问题？

预先感谢您

编辑：

如果这可以帮助您。我已经添加了创建数据库表的脚本。

CREATE TABLE `event` (
  `EventId` int(11) NOT NULL AUTO_INCREMENT,
  `Type` varchar(100) NOT NULL,
  `Description` text,
  `EventDate` datetime NOT NULL,
  `CreationDate` datetime NOT NULL,
  `UpdateDate` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`EventId`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8;

CREATE TABLE `event_period` (
  `EventPeriodId` int(11) NOT NULL AUTO_INCREMENT,
  `PeriodId` int(11) NOT NULL,
  `EventId` int(11) NOT NULL,
  `CourtNumber` int(11) NOT NULL,
  `CreationDate` datetime NOT NULL,
  `UpdateDate` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`EventPeriodId`),
  KEY `fk_event_period_to_period` (`PeriodId`),
  KEY `fk_event_period_to_event` (`EventId`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8;

CREATE TABLE `period` (
  `PeriodId` int(11) NOT NULL AUTO_INCREMENT,
  `StartHour` time NOT NULL,
  `EndHour` time NOT NULL,
  `CreationDate` datetime NOT NULL,
  `UpdateDate` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`PeriodId`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8;

CREATE TABLE `player` (
  `PlayerId` int(11) NOT NULL AUTO_INCREMENT,
  `Login` varchar(100) NOT NULL,
  `Password` varchar(100) NOT NULL,
  `RankId` int(11) NOT NULL DEFAULT '1',
  `FirstName` varchar(100) NOT NULL,
  `LastName` varchar(100) NOT NULL,
  `Email` varchar(100) NOT NULL,
  `ValidateId` varchar(100) NOT NULL,
  `InscriptionDate` datetime NOT NULL,
  `Enable` tinyint(1) NOT NULL,
  `CreationDate` datetime NOT NULL,
  `UpdateDate` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`PlayerId`),
  KEY `fk_player_to_rank` (`RankId`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8;

CREATE TABLE `player_event_period` (
  `PlayerEventPeriodId` int(11) NOT NULL AUTO_INCREMENT,
  `PlayerId` int(11) NOT NULL,
  `EventPeriodId` int(11) NOT NULL,
  `Participate` tinyint(1) NOT NULL,
  `CreationDate` datetime NOT NULL,
  `UpdateDate` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`PlayerEventPeriodId`),
  KEY `fk_player_event_period_to_player` (`PlayerId`),
  KEY `fk_player_event_period_to_event_period` (`EventPeriodId`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8;


ALTER TABLE `event_period`
  ADD CONSTRAINT `fk_event_period_to_period` FOREIGN KEY (`PeriodId`) REFERENCES `period` (`PeriodId`) ON DELETE CASCADE ON UPDATE CASCADE,
  ADD CONSTRAINT `fk_event_period_to_event` FOREIGN KEY (`EventId`) REFERENCES `event` (`EventId`) ON DELETE CASCADE ON UPDATE CASCADE;

ALTER TABLE `player`
  ADD CONSTRAINT `fk_player_to_rank` FOREIGN KEY (`RankId`) REFERENCES `rank` (`RankId`);

ALTER TABLE `player_event_period`
  ADD CONSTRAINT `fk_player_event_period_to_player` FOREIGN KEY (`PlayerId`) REFERENCES `player` (`PlayerId`) ON DELETE CASCADE ON UPDATE CASCADE,
  ADD CONSTRAINT `fk_player_event_period_to_event_period` FOREIGN KEY (`EventPeriodId`) REFERENCES `event_period` (`EventPeriodId`) ON DELETE CASCADE ON UPDATE CASCADE;

Answer 1

不确定你的模型看起来如何，但你的名为“player”的表中有一个名为“playerid”的列吗？

这就是mysql所抱怨的。

[编辑]
我认为 Doctrine 更喜欢小写的列名。
（不记得 MySQL 是否区分列名的大小写......）

Answer 2

MySQL 列名的大小写敏感度取决于数据库/架构/表的配置方式，但看起来您的列名是区分大小写的。

您尚未提供实体定义，因此我猜测问题所在，但请尝试设置列的名称。

例如，对于玩家 id，注释将是：

/**
 * @Column(name="PlayerId", type="integer", length=11, nullable=false)
 * @Id
 * GeneratedValue(strategy="AUTO")
 */
protected $PlayerId;