Doctrine_RawSql 查询中的聚合值

Aggregate values in Doctrine_RawSql queries(Doctrine_RawSql 查询中的聚合值)

问题描述

是否可以在 Doctrine_RawSql 查询中使用聚合值?这是我正在尝试做的事情:

Is it possible to use aggregate values in Doctrine_RawSql query? Here's what I'm trying to do:

$q = new Doctrine_RawSql();
$q->select('{q.*}, AVG(a.value) AS avg');
$q->from('-- complex from clause');
$q->addComponent('q', 'Question');

但是，Doctrine 创建的 SQL 只保留表 question 中的列，并省略聚合值 avg.

However, SQL created by Doctrine leaves only columns from table question and omits aggregate value avg.

推荐答案

我之前从未使用过Doctrine_RawSql，但是我使用这两种方法之一通过Doctrine 完成了原始SQL 查询:

I've never used Doctrine_RawSql before, but I have done raw SQL queries through Doctrine using either of these two methods:

Doctrine_Manager::getInstance()->getCurrentConnection()->fetchAssoc("YOUR SQL QUERY HERE");

和

$doctrine = Doctrine_Manager::getInstance()->getCurrentConnection()->getDbh();
$result = $doctrine->query('YOUR SQL QUERY HERE');

这两种方法似乎会使您的原始 SQL 保持不变.

It seems like these two methods would leave your original SQL intact.

我应该注意，我在 Symfony 1.4 应用程序的上下文中使用 Doctrine 1.2，但是 AFAIK，无论您使用什么其他框架，这都对您有用.

I should note that I'm using Doctrine 1.2 within the context of Symfony 1.4 applications, but AFAIK, this would work for you regardless of what other frameworks you may be using.

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