MySQL使用LEFT JOIN查詢所有記錄不只是一個

Question

我正在使用MySQL和LEFT JOIN與子選擇。在任何情況下，我現在都已經設置好了，我不得不在我正在查詢的值「ELO-250030」中進行硬編碼。我希望能夠運行此腳本，而不必在我的值中硬編碼或將其傳遞到查詢中，我只是希望sql查詢循環遍歷數據庫表中的所有記錄，並匹配我目前所在的位置「ELO-250030 」。例如，如果我有ELO-250030，ELO-250031，ELO-250032的SKU。它需要查詢每個這些值。如何設置我的查詢下面，這樣我可以刪除：

AND fbas.sku = 'ELO-250030' 

和

AND fbai.sku = 'ELO-250030' 

但MySQL將仍然匹配這些列和查詢......

這裏是我的全部sql查詢。

SELECT fbai.id, 
    fbai.sku, 
    sumQS, 
    SUM(fbai.qtyFulfillable) AS sumQF 
FROM FBAInventory fbai 
LEFT JOIN 
    (
     SELECT fbas.sku, SUM(fbas.quantityShipped) as sumQS 
     FROM FBAShipment fbas 
     WHERE fbas.shipmentDate BETWEEN '2014-08-15 22:19:50' AND '2014-09-15 01:10:57' 
     AND fbas.sku = 'ELO-250030' 
    ) fbas ON fbai.sku = fbas.sku 
WHERE fbai.fbaInventoryReport_id = 62010 
AND  fbai.sku = 'ELO-250030' 
GROUP BY fbai.id 
ORDER BY sumQF DESC; 

我已經試過這樣做，但我只是得到錯誤：

SELECT fbai.id, 
    fbai.sku, 
    sumQS, 
    SUM(fbai.qtyFulfillable) AS sumQF 
FROM FBAInventory fbai 
LEFT JOIN 
    (
     SELECT fbas.sku, SUM(fbas.quantityShipped) as sumQS 
     FROM FBAShipment fbas 
     WHERE fbas.shipmentDate BETWEEN '2014-08-15 22:19:50' AND '2014-09-15 01:10:57' 
     AND fbas.sku = fbai.sku 
    ) fbas ON fbai.sku = fbas.sku 
WHERE fbai.fbaInventoryReport_id = 62010 
GROUP BY fbai.sku 
ORDER BY sumQF DESC; 

Answer 1

我覺得左連接和子查詢在SELECT子句是罰款解決方案。

例如

SELECT 
    fbai.id, 
    fbai.sku, 
    (
     SELECT SUM(fbas.quantityShipped) as sumQS 
     FROM FBAShipment fbas 
     WHERE fbas.sku = fbai.sku 
      AND fbas.shipmentDate BETWEEN '2014-08-15 22:19:50' AND '2014-09-15 01:10:57' 
    ) sumQS, 
    SUM(fbai.qtyFulfillable) AS sumQF 
FROM FBAInventory fbai 
WHERE fbai.fbaInventoryReport_id = 62010 
GROUP BY fbai.id, fbai.sku 
ORDER BY 4; 

Answer 2

你GROUP BY是亂七八糟......任何其他的SQL引擎會報錯了您的查詢（因爲它應該），但MySQL的熱愛忽略它，做錯誤的事情，而不是.. 。最好的解決方案是卸載MySQL並使用更好的數據庫。

做不到這一點，cmorrissey的評論實際上是正確的答案有你組由是正確的：

通過改變你的組： fbai.id， fbai.sku， sumQS

刪除SKU參考。

Answer 3

除非您特別過濾出不同/特定的SKU編號，否則您可以在表格之間進行連接以匹配SKU。像下面的東西。

SELECT fbai.id, 
     fbai.sku, 
     fbas.sumQS, 
     fbai.sumQF 
FROM 
(
    SELECT id, 
     sku, 
     SUM(qtyFulfillable) as sumQF 
    FROM FBAInventory 
    WHERE fbaInventoryReport_id = 62010 
    GROUP BY id, sku 
) fbai 
LEFT JOIN 
    (
     SELECT sku, SUM(quantityShipped) as sumQS 
     FROM FBAShipment 
     WHERE fbas.shipmentDate 
     BETWEEN '2014-08-15 22:19:50' AND '2014-09-15 01:10:57' 
     GROUP BY sku  
    ) fbas 
ON fbai.sku = fbas.sku 
ORDER BY fbai.sumQF DESC;