我将 Doctrine 2 与 PDO_MYSQL 一起使用,我想查询该查询:
SELECT DISTINCT DATE_FORMAT(FROM_UNIXTIME(time), '%M %Y')
FROM Project\Posts
GROUP BY time
所以我尝试了:
$q = $em->createQuery("SELECT DISTINCT DATE_FORMAT(FROM_UNIXTIME(time), '%M %Y') FROM Project\Posts GROUP BY time");
$r = $q->getResult();
print_r($r);
但我得到这个错误:
Fatal error: Uncaught exception 'Doctrine\ORM\Query\QueryException' with message '[Syntax Error] line 0, col 16: Error: Expected known function, got 'DATE_FORMAT''
那么我该如何查询该查询呢?