0
我是查詢DSL的新手。現在我需要在查詢DSL來寫這個簡單的查詢:查詢DSL左連接查詢
select * from parent_msq pm left join child_msg cm on (cm.id = pm.id)
我試着這樣做:
QParentMsg qParentMsg = QParentMsg.parentMsg;
QChildMsg qChildMsg = QChildMsg.childMsg;
JPAQuery q = new JPAQuery(em);
q.from(qParentMsg).leftJoin(qParentMsg.id, qChildMsg).on(qParentMsg.id.eq(qChildMsg.id));
我在做什麼錯?
您收到了哪些錯誤信息? – toonice