Question

我已经找到了一些答案，但这里没有任何帮助。我需要一个查询，在一个月内找到每个销售渠道（共5个）的前10个产品。我已经尝试过一个怪异的联盟所有查询，但我没有得到我需要的结果。（我认为我写的查询并不是最好的，无论如何......）

SELECT a.SKU, a.ProductName, b.SalesChannel, sum(a.PurchasedQuantity) as pq
FROM all_all_orders_items a
INNER JOIN all_all_orders b ON b.AmazonOrderID = a.AmazonOrderID
WHERE b.SalesChannel = 1 AND b.PurchaseDate  BETWEEN NOW() - INTERVAL 30 DAY AND NOW()
GROUP BY a.SKU, b.SalesChannel
UNION ALL
SELECT a.SKU, a.ProductName, b.SalesChannel, sum(a.PurchasedQuantity) as pq
FROM all_all_orders_items a
INNER JOIN all_all_orders b ON b.AmazonOrderID = a.AmazonOrderID
WHERE b.SalesChannel = 2 AND b.PurchaseDate  BETWEEN NOW() - INTERVAL 30 DAY AND NOW()
GROUP BY a.SKU, b.SalesChannel
UNION ALL
SELECT a.SKU, a.ProductName, b.SalesChannel, sum(a.PurchasedQuantity) as pq
FROM all_all_orders_items a
INNER JOIN all_all_orders b ON b.AmazonOrderID = a.AmazonOrderID
WHERE b.SalesChannel = 3 AND b.PurchaseDate  BETWEEN NOW() - INTERVAL 30 DAY AND NOW()
GROUP BY a.SKU, b.SalesChannel
UNION ALL
SELECT a.SKU, a.ProductName, b.SalesChannel, sum(a.PurchasedQuantity) as pq
FROM all_all_orders_items a
INNER JOIN all_all_orders b ON b.AmazonOrderID = a.AmazonOrderID
WHERE b.SalesChannel = 4 AND b.PurchaseDate  BETWEEN NOW() - INTERVAL 30 DAY AND NOW()
GROUP BY a.SKU, b.SalesChannel
UNION ALL
SELECT a.SKU, a.ProductName, b.SalesChannel, sum(a.PurchasedQuantity) as pq
FROM all_all_orders_items a
INNER JOIN all_all_orders b ON b.AmazonOrderID = a.AmazonOrderID
WHERE b.SalesChannel = 5 AND b.PurchaseDate  BETWEEN NOW() - INTERVAL 30 DAY AND NOW()
GROUP BY a.SKU  , b.SalesChannel
ORDER BY pq DESC LIMIT 10

在不查询db 5次的情况下获得结果的最佳方法是什么？

现在我只获得整体最佳产品 - 但不是销售渠道特定的......

Answer 1

试试这个：

SELECT A.SKU, A.ProductName, A.SalesChannel, A.pq
FROM (SELECT A.SKU, A.ProductName, A.SalesChannel, A.pq, 
             IF(@SalesChannel = @SalesChannel:=A.SalesChannel, @RowId:=@RowId + 1, @RowId:=1) AS RowNum
      FROM (SELECT a.SKU, a.ProductName, b.SalesChannel, SUM(a.PurchasedQuantity) as pq
            FROM all_all_orders_items a
            INNER JOIN all_all_orders b ON b.AmazonOrderID = a.AmazonOrderID
            WHERE b.SalesChannel IN (1, 2, 3, 4, 5) AND b.PurchaseDate  BETWEEN NOW() - INTERVAL 30 DAY AND NOW()
            GROUP BY a.SKU, b.SalesChannel
            ORDER BY b.SalesChannel, pq DESC
          ) AS A, (SELECT @SalesChannel:=0, @RowId:=1) AS B
      ORDER BY A.SalesChannel, A.pq DESC
     ) AS A 
WHERE A.RowNum <= 10
ORDER BY A.SalesChannel, A.RowNum;

Answer 2

也许这种查询可能有用：

SELECT 
   b.SalesChannel, a.SKU, a.ProductName, b.SalesChannel, sum(a.PurchasedQuantity) as pq
FROM 
   all_all_orders_items a
   INNER JOIN all_all_orders b ON b.AmazonOrderID = a.AmazonOrderID
WHERE 
   b.SalesChannel IN (1, 2, 3, 4, 5) AND b.PurchaseDate  BETWEEN NOW() - INTERVAL 30 DAY AND NOW()
GROUP BY 
   b.SalesChannel, a.SKU, b.SalesChannel
ORDER BY
   b.SalesChannel ASC, pq DESC LIMIT 50

我希望它可以以任何方式提供帮助

试图在每个销售渠道获得TOP 10产品

2 个答案: