php Symfony2 和 Doctrine：创建自定义 SQL 查询
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Symfony2 & Doctrine: Create custom SQL-Query
提问by a1337q
How can I create a custom SQL query in Symfony2 using Doctrine? Or without Doctrine, I don't care.
如何使用 Doctrine 在 Symfony2 中创建自定义 SQL 查询？或者没有教义，我不在乎。
Doesn't work like this:
不是这样工作的：
$em = $this->getDoctrine()->getEntityManager();
$em->createQuery($sql);
$em->execute();
Thanks.
谢谢。
回答by Thomas Kelley
You can get the Connection object directly from the Entity Manager, and run SQL queries directly through that:
您可以直接从实体管理器获取 Connection 对象，并通过它直接运行 SQL 查询：
$em = $this->getDoctrine()->getManager(); // ...or getEntityManager() prior to Symfony 2.1
$connection = $em->getConnection();
$statement = $connection->prepare("SELECT something FROM somethingelse WHERE id = :id");
$statement->bindValue('id', 123);
$statement->execute();
$results = $statement->fetchAll();
However, I'd advise against this unless it's really necessary... Doctrine's DQL can handle almost any query you might need.
但是，除非确实有必要，否则我建议不要这样做……Doctrine 的 DQL 几乎可以处理您可能需要的任何查询。
Official documentation: https://www.doctrine-project.org/projects/doctrine-dbal/en/2.9/reference/data-retrieval-and-manipulation.html
官方文档：https: //www.doctrine-project.org/projects/doctrine-dbal/en/2.9/reference/data-retrieval-and-manipulation.html
回答by Yassine EL MALKI
You can execute this code it works :
您可以执行此代码，它可以工作：
$em = $this->getDoctrine()->getEntityManager();
$result= $em->createQuery($sql)->getResult();
