Question

我正在尝试按照处于ManyToMany关系中的Jobs对服务进行排序。

public Page<com.bitweb.syda.data.entity.service.Service> getServicesList(ServiceListRequest request, Pageable pageable, String sort) {
        Specification<com.bitweb.syda.data.entity.service.Service> spec = (root, cq, cb) -> {
            if(!Long.class.isAssignableFrom(cq.getResultType())) {

                if(sort.contains("jobs")) {
                    Join<com.bitweb.syda.data.entity.service.Service, Job> jobs = root.join("jobs");
                    //check for asc or desc
                    cq.groupBy(root.get("id"), jobs.get("id"));
                    cq.orderBy(cb.asc(jobs.get("name")));
                }
            }
            return null;
        };
        if (request.getSearch() != null) spec = spec.and(search(request.getSearch()));
        if (request.getName() != null) spec = spec.and(name(request.getName()));
        if (request.getJobs() != null) spec = spec.and(hasJobs(request.getJobs()));
        if (request.getNeedsPatrol() != null) spec = spec.and(needsPatrol(request.getNeedsPatrol()));

        return serviceRepository.findAll(spec, pageable);
    }

我得到的错误是

ERROR: column "job4_.id" must appear in the GROUP BY clause or be used in an aggregate function

从postgre日志中，我可以看到查询结束，如下所示：

group by service0_.id , job2_.id order by job4_.id asc

我怎样才能使它正常工作？

规范group by子句，列必须出现在子句中

0 个答案: