JPA子查询

CriteriaBuilder cb = entityManager.getCriteriaBuilder();

CriteriaQuery<MemberAccountItem> cq = cb.createQuery(MemberAccountItem.class);

Root<MemberAccountItem> root = cq.from(MemberAccountItem.class);

cq.select(root);

// 子查询

Subquery<Long> sq = cq.subquery(Long.class);

Root<MemberAccountItem> root2 = sq.from(MemberAccountItem.class);

sq.select(cb.max(root2.get(MemberAccountItem_.numberProcessed)));

sq.where(cb.equal(root2.get(MemberAccountItem_.company), company));

cq.where(cb.and(cb.equal(root.get(MemberAccountItem_.company), company),

cb.equal(root.get(MemberAccountItem_.numberProcessed), sq)));