Add primary key for count / groupby query

with table

Maintenance:
columns:
id:

Unknown macro: { type}

record_id:

Unknown macro: { type}

,
referenced_relation:

Unknown macro: { type}

people_ref:

Unknown macro: { type}

,
category:

Unknown macro: { type}

i'm trying to count number of maintenances by record_id

and doctrine construct my dql correctly :

SELECT COUNT(m.id) AS cnt, m.record_id FROM Maintenance m WHERE m.record_id IN GROUP BY m.record_id

But after this, it translate to a wrong sql query :

SELECT c.id AS c_id, c.record_id AS crecord_id, COUNT(c.id) AS c_0 FROM collection_maintenance c WHERE (c.record_id IN ) GROUP BY c.record_id

And postgresql says that c.id must be in the group by... but i don't want it!

Please help me