按具有多个层次级别的值对行进行排序

Question

我有一个分层产品价格列表，其价格已经汇总。层级为 cluster、store 和 shelf.

我想对这些产品价格进行分层排序。每个级别都需要排序。这是预期结果的示例：

现在，我可以在货架级别对价格进行排序，但还不能在商店或集群级别排序：

SELECT cluster_id, store_id, shelf_id, price FROM (
    SELECT * FROM (
        SELECT p.*,
            ROW_NUMBER () OVER (
                ORDER BY
                cluster_id ASC NULLS FIRST,
                store_id ASC NULLS FIRST,
                price DESC
            ) AS rn
        FROM (SELECT * FROM products) p
    )
)
ORDER BY rn;

我的实际结果是：

我正在使用 Oracle Database 12c。

示例数据

CREATE TABLE products (
    cluster_id     VARCHAR2(30),
    store_id       VARCHAR2(30),
    shelf_id       VARCHAR2(40),
    price          NUMBER(*,2)
);

INSERT INTO products VALUES ('10','230',NULL,120);
INSERT INTO products VALUES (NULL,NULL,NULL,500);
INSERT INTO products VALUES ('10','230','967',40);
INSERT INTO products VALUES ('10',NULL,NULL,300);
INSERT INTO products VALUES ('50','430','863',50);
INSERT INTO products VALUES ('50','170',NULL,70);
INSERT INTO products VALUES ('10','500','783',100);
INSERT INTO products VALUES ('50','170','798',20);
INSERT INTO products VALUES ('50','480',NULL,80);
INSERT INTO products VALUES ('50','430',NULL,50);
INSERT INTO products VALUES ('10','500',NULL,180);
INSERT INTO products VALUES ('50','480','486',60);
INSERT INTO products VALUES ('10','230','296',80);
INSERT INTO products VALUES ('50',NULL,NULL,200);
INSERT INTO products VALUES ('10','500','344',80);
INSERT INTO products VALUES ('50','480','234',20);
INSERT INTO products VALUES ('50','170','368',50);

Answer 1

我认为这会奏效。

with t as (
  select cluster_id
  , store_id
  , shelf_id
  , price
  , row_number() over (partition by cluster_id order by price desc) cluster_sort
  , row_number() over (partition by cluster_id, store_id order by price desc) store_sort
  , row_number() over (partition by cluster_id, store_id, shelf_id order by price desc) shelf_sort
)
select cluster_id
, store_id
, shelf_id
, price
from t
order by cluster_sort
, store_sort
, shelf_sort
;

Answer 2

这种排序方法给出了所需的输出：

select p.*
  from products p
  order by 
       sum(case when store_id is not null and shelf_id is not null then price end) 
           over (partition by cluster_id) desc,
       sum(case when store_id is not null and shelf_id is not null then price end) 
           over (partition by cluster_id, store_id) desc,
       case when shelf_id is null then 1 end, price desc

按具有多个层次级别的值对行进行排序

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