Doctrine-如何使用子查询列（在SELECT子句中并具有条件）

Question

您好，我正在尝试将ZF查询生成器重写为准则ORM。>>

这里是我的旧Zend框架查询。

$dependent = new Zend_Db_Expr('if(br.billing_rate = \'dependent\',(SELECT COUNT(*) FROM childcare_billing_rule_price AS p WHERE p.id < brp.id AND p.childcare_billing_rule_id = brp.childcare_billing_rule_id),0)');

        $select = $this
            ->select()->setIntegrityCheck(false)
            ->from(array('brg' => 'childcare_billing_rule_group'), array())
            ->joinInner(array('br' => 'childcare_billing_rule'), 'br.id = brg.billing_rule_id', array('*', 'dependent' => $dependent))
            ->join(array('brp' => 'childcare_billing_rule_price'), 'br.id = brp.childcare_billing_rule_id', array('age_from', 'age_to', 'default_rate' => 'rate'))
            ->where('is_default != 1')
            ->where('br.billing_type in (\'' . implode('\',\'', array(self::BILLING_TYPE_PER_DAY, self::BILLING_TYPE_PER_HOUR, self::BILLING_TYPE_PER_UNLIMITED, self::BILLING_TYPE_PER_RESERVATION)) . '\')')
            ->where('brg.group_id IN (?)', $groupId)
            ->group('brp.id')
            ->having('dependent <= ?', $dependentLevel)
            ->order('dependent desc')
            ->order('brp.rate');
这里是SQL行值

SELECT `br`.*, 
 if (br.billing_rate = 'dependent', 
    (SELECT COUNT(*) FROM childcare_billing_rule_price AS p WHERE p.id < brp.id AND p.childcare_billing_rule_id = brp.childcare_billing_rule_id),
 0) AS `dependent`, 
 `brp`.`age_from`, 
 `brp`.`age_to`, 
 `brp`.`rate` AS `default_rate` 

 FROM `childcare_billing_rule_group` AS `brg`

 INNER JOIN `childcare_billing_rule` AS `br` ON br.id = brg.billing_rule_id

 INNER JOIN `childcare_billing_rule_price` AS `brp` ON br.id = brp.childcare_billing_rule_id 
 WHERE (is_default != 1) 
 AND (br.billing_type in ('Per Day','Per Hour','Unlimited','Per Reservation')) 
 AND (brg.group_id IN (103)) 
 AND ((brp.age_from = 0 AND brp.age_to = 0) || 3.1666666666667 
 BETWEEN brp.age_from AND brp.age_to) 
 GROUP BY `brp`.`id` HAVING (dependent <= '0') 
 ORDER BY `dependentw` desc, 
 `brp`.`rate` ASC
我不确定如何实现此子查询

 new Zend_Db_Expr('if(br.billing_rate = \'dependent\',(SELECT COUNT(*) FROM childcare_billing_rule_price AS p WHERE p.id < brp.id AND p.childcare_billing_rule_id = brp.childcare_billing_rule_id),0)');
到目前为止，我的代码

$subQuery = $subQueryBuilder
            ->select('if (br.billing_rate = 'dependent', 
        (SELECT COUNT(*) FROM childcare_billing_rule_price AS p WHERE p.id < brp.id AND p.childcare_billing_rule_id = brp.childcare_billing_rule_id)')
            ->getSQL();

 $queryBuilder->select($alias)
            ->addSelect($subQuery)
            ->innerJoin(ChildcareBillingRule::class, 'br', Join::WITH, 'br.id = childcare_billing_rule_group.childcareBillingRule')
            ->innerJoin(ChildcareBillingRulePrice::class, 'brp', Join::WITH, 'br.id = brp.childcareBillingRule')
            ->where("br.billingType in (:billingTypes)")
            ->andWhere(  'br.isDefault != :isDefault')
            ->andWhere(  'childcare_billing_rule_group.groupId in (:groupId)')
            ->setParameter('groupId', [103])
            ->setParameter('isDefault', 1)
            ->setParameter('billingTypes', ['Per Hour', 'Per Reservation', 'Per Day', 'Unlimited'])
            ->having('dependent <= ?', $dependentLevel')
            ->groupBy('brp.id')
            ->orderBy('brp.rate') ;
            ->getQuery()->getSingleResult();
所以我试图用addSelect添加子查询，但不确定这是正确的方法吗？任何帮助或想法表示赞赏吗？ Tnx

您好，我正在尝试将ZF查询生成器重写为准则ORM。这是我的旧Zend框架查询。 $ dependent = new Zend_Db_Expr（'if（br.billing_rate = \'dependent \'，（SELECT COUNT（*）FROM ...

Answer 1

简而言之，而不是-> getSQL（），您应该使用-> getDQL（）。