doctrine/dbal — pull request #322 by Ocramius (2013-05-20 16:13:57+00:00)
Title: DBAL-522

Hotfix for [DBAL-522](http://www.doctrine-project.org/jira/browse/DBAL-522)

Demonstrates that NULL parameters are handled incorrectly by `Doctrine\DBAL\SqlParserUtils` as of 2.3.4.

Basically, following usage always throws an exception:

```php
$conn->executeQuery(
'INSERT INTO FOO (foo, bar) values (:foo, :bar)',
array('foo' => 1, 'bar' => null)
);
```