subquery in join with doctrine dql
- by Martijn de Munnik
I want to use DQL to create a query which looks like this in SQL:
select
e.*
from
e
inner join (
select
uuid, max(locale) as locale
from
e
where
locale = 'nl_NL' or
locale = 'nl'
group by
uuid
) as e_ on e.uuid = e_.uuid and e.locale = e_.locale
I tried to use QueryBuilder to generate the query and subquery. I think they do the right thing by them selves but I can't combine them in the join statement. Does anybody now if this is possible with DQL? I can't use native SQL because I want to return real objects and I don't know for which object this query is run (I only know the base class which have the uuid and locale property).
$subQueryBuilder = $this->_em->createQueryBuilder();
$subQueryBuilder
->addSelect('e.uuid, max(e.locale) as locale')
->from($this->_entityName, 'e')
->where($subQueryBuilder->expr()->in('e.locale', $localeCriteria))
->groupBy('e.uuid');
$queryBuilder = $this->_em->createQueryBuilder();
$queryBuilder
->addSelect('e')
->from($this->_entityName, 'e')
->join('('.$subQueryBuilder.') as', 'e_')->join
->where('e.uuid = e_.uuid')
->andWhere('e.locale = e_.locale');
