我尝试启动这个 HQL 查询:
select elt.id from Delivery as dly
inner join dly.programs as pgm
inner join pgm.elements as elt
where dly=:deliveryid
我发现了这个异常:ORA-01427: sous-interrogation ramenant un enregistrement de plus d'une ligne
我的查询有什么问题?谢谢