How to debug MySQL/Doctrine2 Queries?

Question

I am using MySQL with Zend Framework & Doctrine 2. I think even if you don't use Doctrine 2, you will be familiar with errors like

SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'ASC' at line 1

The problem is that I don't see the full query. Without an ORM framework, I could probably echo the sql easily, but with a framework, how can I find out what SQL its trying to execute? I narrowed the error down to

$progress = $task->getProgress();

$progress is declared

// Application\Models\Task
/**
 * @OneToMany(targetEntity="TaskProgress", mappedBy="task")
 * @OrderBy({"seq" = "ASC"})
 */
protected $progress;

In MySQL, the task class looks like

CREATE TABLE `tasks` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `owner_id` int(11) DEFAULT NULL,
  `assigned_id` int(11) DEFAULT NULL,
  `list_id` int(11) DEFAULT NULL,
  `name` varchar(60) NOT NULL,
  `seq` int(11) DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `tasks_owner_id_idx` (`owner_id`),
  KEY `tasks_assigned_id_idx` (`assigned_id`),
  KEY `tasks_list_id_idx` (`list_id`),
  CONSTRAINT `tasks_ibfk_1` FOREIGN KEY (`owner_id`) REFERENCES `users` (`id`),
  CONSTRAINT `tasks_ibfk_2` FOREIGN KEY (`assigned_id`) REFERENCES `users` (`id`),
  CONSTRAINT `tasks_ibfk_3` FOREIGN KEY (`list_id`) REFERENCES `lists` (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=latin1$$

Answer 1

If your developing in ZF2 you can either use the solution above posted by beberlei, though this does echo it out to your display which is not exactly best practice but useful.

$em->getConnection()
  ->getConfiguration()
  ->setSQLLogger(new \Doctrine\DBAL\Logging\EchoSQLLogger())
;

or you could use ZendDeveloperTools which displays the execute query on the toolbar.

Answer 2

Maybe you should use a Zend_Db_Profile in your [development] environment.

This will log your queries with runtime and other informations.

If you have an error log that logs your exceptions, then everything can be found in your log files.

See this link: Zend Enable SQL Query logging

Also see this Zend Framework Helper: https://github.com/jokkedk/ZFDebug