Java 错误表上的Spring数据排序

我有一个运行Spring Data+Hibernate的应用程序和以下查询：

@Query(value = "SELECT NEW com.foo.dto.OfertaBancoDto(y,(SELECT CASE a.id WHEN NULL THEN 0 ELSE 1 END FROM Banco b LEFT JOIN b.blackList a)) FROM Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1)",
        countQuery = "SELECT COUNT(y) FROM Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1)")
Page<OfertaBancoDto> randomSearch(Set<StatusOferta> filtroStatus, Pageable pageable);

结果查询是（问题是b.titulo，因为b代表错误的表）：

正确的查询应该是：

SELECT NEW com.foo.dto.OfertaBancoDto(y,(SELECT CASE a.id WHEN NULL THEN 0 ELSE 1 END FROM com.foo.entity.Banco b LEFT JOIN b.blackList a)) FROM com.foo.entity.Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM com.foo.entity.Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1) order by y.titulo asc

---

如何指定orderby应筛选的表？

存储库的签名是什么？它应该是这样的：

public interface FooRepo extends JpaRepository<T, ID> {
....
}

公共接口FooRepo扩展了JpaRepository{
....
}

我怀疑您使用了Banco for T。因此，要解决此问题，您可以尝试两个选项：

1） 将该方法移到Oferta的存储库中

---

2） 将此方法移动到自定义存储库中（我认为这样更好）

我猜您的可分页性如下：

Sort sort = new Sort(Sort.Direction.DESC, "id");
Pageable pageable = new PageRequest(offset, limit,sort)

不要使用“排序”按钮更改可分页内容，如：

// Sort sort = new Sort(Sort.Direction.DESC, "id");
Pageable pageable = new PageRequest(offset, limit)

使用sql实现order by函数：

@Query(value = "SELECT NEW com.foo.dto.OfertaBancoDto(y,(SELECT CASE a.id WHEN NULL THEN 0 ELSE 1 END FROM Banco b LEFT JOIN b.blackList a)) FROM Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1) order by y.titulo asc ",
    countQuery = "SELECT COUNT(y) FROM Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1)")

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页面随机搜索（设置filtroStatus，可分页）

我的签名如下：

存储库的公共接口扩展了EntityRepository

和

公共接口EntityRepository扩展了JpaRepository、JpaSpecificationExecutor、QueryDSL谓词执行器{}

。另外，所讨论的方法是withint of erta Repository。我无法理解您将该方法移动到自定义存储库的意思。我以为我已经在使用自定义repo（of ertarepository）。哦，对于像您的案例这样的自定义对象的查询，最好使用自定义存储库。请参阅本手册第1.3节。您是否尝试过使用

新排序（Direction.ASC，“y.titulo”）

？

// Sort sort = new Sort(Sort.Direction.DESC, "id");
Pageable pageable = new PageRequest(offset, limit)

@Query(value = "SELECT NEW com.foo.dto.OfertaBancoDto(y,(SELECT CASE a.id WHEN NULL THEN 0 ELSE 1 END FROM Banco b LEFT JOIN b.blackList a)) FROM Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1) order by y.titulo asc ",
    countQuery = "SELECT COUNT(y) FROM Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1)")