When using YAML configuration to define 1:M, M:1 relationships, the joinColumn.name entry is ignored and Doctrine tries to use the default *_id convention.

Using the Doctrine2 tutorial example, I created YAML mapping for the Bug entity:

1. config/yaml/Bug.dcm.yml
   Bug:
   type: entity
   table: bugs
   id:
   id:
   type: integer
   generator:
   strategy: AUTO
   fields:
   description:
   type: text
   created:
   type: datetime
   status:
   type: string
   manyToOne:
   reporter:
   targetEntity: User
   inversedBy: reportedBugs
   joinColumm:
   name: reporterId
   referencedColumnName: id
   engineer:
   targetEntity: User
   inversedBy: assignedBugs
   joinColumm:
   name: engineerId
   referencedColumnName: id
   manyToMany:
   products:
   targetEntity: Product

I then tried to run list_bugs:

<?php
// list_bugs.php
require_once "bootstrap.php";

$dql = "SELECT b, e, r FROM Bug b JOIN b.engineer e JOIN b.reporter r ORDER BY b.created DESC";

$query = $em->createQuery($dql);
$query->setMaxResults(30);
$bugs = $query->getResult();

foreach($bugs AS $bug) {
echo $bug->getDescription()." - ".$bug->getCreated()->format('d.m.Y')."\n";
echo " Reported by: ".$bug->getReporter()->name."\n";
echo " Assigned to: ".$bug->getEngineer()->name."\n";
foreach($bug->getProducts() AS $product)

echo "\n";

However, I get this error message:

PHP Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[42S22]: Column not found: 1054 Unknown column 'b0_.reporter_id' in 'field list'' in /Library/WebServer/Documents/DoctrineTutorial/Doctrine/DBAL/Connection.php:646
Stack trace:
#0 /Library/WebServer/Documents/DoctrineTutorial/Doctrine/DBAL/Connection.php(646): PDO->query('SELECT b0_.id A...')
#1 /Library/WebServer/Documents/DoctrineTutorial/Doctrine/ORM/Query/Exec/SingleSelectExecutor.php(46): Doctrine\DBAL\Connection->executeQuery('SELECT b0_.id A...', Array, Array, NULL)
#2 /Library/WebServer/Documents/DoctrineTutorial/Doctrine/ORM/Query.php(264): Doctrine\ORM\Query\Exec\SingleSelectExecutor->execute(Object(Doctrine\DBAL\Connection), Array, Array)
#3 /Library/WebServer/Documents/DoctrineTutorial/Doctrine/ORM/AbstractQuery.php(737): Doctrine\ORM\Query->_doExecute()