Mysql 链接到另一列中某个值的数据列表

CREATE TABLE operations (
    id int auto_increment primary key,
    orderID VARCHAR(255),
    itemID VARCHAR(255),
    event_date DATE,
    order_volume INT,
    shipped_volume INT
);

INSERT INTO operations
(itemID, orderID, event_date, order_volume, shipped_volume
)
VALUES 
("Item_01", "Order_01", "2020-01-01", "200", "0"),
("Item_01", "Order_01", "2020-01-18", "0", "50"),
("Item_01", "Order_02", "2020-02-15", "400", "0"),
("Item_01", "Order_02", "2020-02-23", "0", "120"),
("Item_01", "Order_03", "2020-02-21", "300", "0"),
("Item_01", "Order_03", "2020-02-21", "0", "180"),

("Item_02", "Order_01", "2020-02-02", "500", "0"),
("Item_02", "Order_01", "2020-02-10", "0", "175"),
("Item_02", "Order_02", "2020-02-03", "900", "0"),
("Item_02", "Order_02", "2020-03-18", "0", "620"),

("Item_03", "Order_01", "2020-08-12", "700", "0"),
("Item_03", "Order_01", "2020-08-25", "0", "280");

预期结果：

itemID       orderID       order_volume     shipped_volume          position
Item_03     Order_01           700             280                     1
Item_02     Order_02           900             620                     1
Item_02     Order_01           500             175                     2
Item_01     Order_03           300             180                     1
Item_01     Order_02           400             120                     2
Item_01     Order_01           200              50                     3 

---

在上表中，我有不同的

项目

，它们对应的

订单

和

事件日期

，订购了

订单卷

，装运了

发货卷

现在，我想得到一个所有订单的降序列表链接到一个特定项目

例如，

Item\u 01

链接到

Order\u 01

，

Order\u 02

，

Order\u 03

因此，带有

Item_01

的

orderIDs

应该从

Order_01

到

Order_03

列出
此外，特定

项目

中每个

订单ID

的位置应在

位置

列中显示为数字

---

到目前为止，我试图执行以下查询，但它没有给出预期结果：

SELECT
itemID,
orderID,
sum(order_volume),
sum(shipped_volume),
ROW_NUMBER() OVER (PARTITION BY orderID ORDER BY event_date DESC) as position
FROM operations
GROUP BY 1,2;

要获得上面显示的结果，我需要做哪些更改？

试试这个

SELECT
itemID,
orderID,
sum(order_volume),
sum(shipped_volume),
ROW_NUMBER() OVER (PARTITION BY orderID ORDER BY itemID DESC) as position
FROM operations
GROUP BY 1,2
order by itemID desc, orderID desc;

试试这个

SELECT
itemID,
orderID,
sum(order_volume),
sum(shipped_volume),
ROW_NUMBER() OVER (PARTITION BY orderID ORDER BY itemID DESC) as position
FROM operations
GROUP BY 1,2
order by itemID desc, orderID desc;

---

您也可以尝试以下方法：

SELECT
itemID,
orderID,
sum(order_volume),
sum(shipped_volume) as ShippedVolume,
ROW_NUMBER() OVER (PARTITION BY orderID ORDER BY ShippedVolume DESC) as position
FROM operations
GROUP BY 1,2
ORDER BY itemID Desc, ShippedVolume Desc;

---

您也可以尝试以下方法：

SELECT
itemID,
orderID,
sum(order_volume),
sum(shipped_volume) as ShippedVolume,
ROW_NUMBER() OVER (PARTITION BY orderID ORDER BY ShippedVolume DESC) as position
FROM operations
GROUP BY 1,2
ORDER BY itemID Desc, ShippedVolume Desc;