顯示關於特定日期的數據？

我想製作一個報告系統，我需要爲每個日期顯示報告。顯示關於特定日期的數據？

這些是selected_items 我的表架構這是stock_list

我在前端，後端和java使用PHP來顯示數據。我嘗試了幾個查詢來獲得所需的輸出，但是我遠遠得不到它。這些是我使用的一些查詢。

SELECT 
    COALESCE(stock_list.date, selected_items.date) AS date, 
    SUM(stock_list.qty) AS StockSum, 
    SUM(stock_list.weight) AS Stockweight, 
    COUNT(selected_items.barcode) AS BilledItems, 
    SUM(selected_items.weight) AS Billedweight 
FROM stock_list join selected_items 
ON stock_list.date = selected_items.date 
GROUP BY COALESCE(stock_list.date, selected_items.date) 
ORDER BY COALESCE(stock_list.date, selected_items.date);

這給了我第一個五列，但輸出給了我錯誤的價值觀。然後我也試過聯盟。

SELECT SUM(qty) AS StockSum, SUM(weight) AS Stockweight 
FROM `stock_list` 
WHERE DATE LIKE '08-Jan-2016' 
UNION SELECT COUNT(barcode) AS BilledItems, SUM(weight) AS Billedweight 
FROM `selected_items` 
WHERE DATE LIKE '08-Jan-2016' 
UNION SELECT SUM(qty) AS TotalStock, SUM(weight) AS TotalWeight 
FROM `stock_list`;

在這裏我得到了正確的值四列，但問題是>結果顯示在兩列的時候，我想它是在4列。任何人都可以引導我，我已經認爲它的Java部分，但我不擅長PHP和MySQL。謝謝

來源

2016-01-20 AndroidNewBee

謝謝@LordAnomander你能幫助解決方案嗎 – AndroidNewBee

你會共享表格模式嗎？ – AnkiiG

是啊@AnkiiG請檢查更新的問題。謝謝 – AndroidNewBee

不幸的是，SQL小提琴應聲而我試圖執行這個查詢

SELECT sl.date AS date, B.qtySum AS StockSum, B.weightSum AS Stockweight, 
C.barcodeCount AS BilledItems, C.weightSum AS Billedweight 
FROM stock_list sl 
JOIN (SELECT SUM(qty) as qtySum, SUM(weight) as weightSum 
     FROM STOCK_LIST GROUP BY date) AS B 
ON B.date = sl.date 
JOIN (SELECT SUM (weight) AS weightSum, COUNT(barcode) AS barcodeCount 
     FROM SELECTED_ITEMS GROUP BY date) AS C 
ON C.date = sl.date;

As it was tried here。聯接的問題是行將被多次連接，因此總和會出錯。例如，您有四行從第二個表中連接起來，因此總和應該高四倍。通過子查詢，您可以避免這個問題，因爲您在加入變量之前對變量進行計數和加總，因此數字應該適合。唉，我無法運行查詢，所以我不能100％確定它的工作原理，但它應該是正確的方法。

來源

2016-01-20 09:03:25 LordAnomander

顯示關於特定日期的數據？

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