When using the cache layer not all fetch modes are supported. See the code of the
When using the cache layer not all fetch modes are supported. See the code of the `ResultCacheStatement <https://github.com/doctrine/dbal/blob/master/lib/Doctrine/DBAL/Cache/ResultCacheStatement.php#L156>`_ for details.
`ResultCacheStatement
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<https://github.com/doctrine/dbal/blob/master/lib/Doctrine/DBAL/Cache/ResultCacheStatement.php#L156>`_ for details.