Question

所以我在这里有这个基本查询，我希望第二列的结果与外部/相关查询相关联：

    SELECT 
        r1.OrderNo,
        COUNT(r1.PartNo) AS [Pcs Complete]
    FROM OrderRouting r1
    WHERE r1.Status = 'Current'
        AND r1.WorkCntr = 'Shipping'
    GROUP BY r1.OrderNo

输出：

所以我正在尝试将第二列放在我的外部查询的选择列表中，所以它看起来像这样：

SELECT 
    CAST(r.OrderNo AS INT) AS OrderNo,
        (
        SELECT 
            r1.OrderNo,
            COUNT(r1.PartNo)
        FROM OrderRouting r1
        WHERE r1.Status = 'Current'
            AND r1.WorkCntr = 'Shipping'
        GROUP BY r1.OrderNo
        ) AS [Pcs Complete]
FROM OrderRouting r 
    JOIN OrderDet od ON r.JobNo = od.JobNo
    JOIN Orders o ON od.OrderNo = o.Orderno
WHERE r.Status = 'Current'
        AND r.WorkCntr IN ('Cutting', 'Framing', 'Assembly', 'Shipping')
GROUP BY CAST(r.OrderNo AS INT)

现在显然这不起作用，因为内部选择只允许1列，但是如果我删除了r1.OrderNo列，我得到1个聚合应用于我的外部查询中的每个值，这不是我想要的。我如何关联它们？我试过这个：

SELECT 
    CAST(r.OrderNo AS INT) AS OrderNo,
        (
        SELECT 
            COUNT(r1.PartNo)
        FROM OrderRouting r1
        WHERE r1.Status = 'Current'
            AND r1.WorkCntr = 'Shipping'
        ) AS [Pcs Complete]
FROM OrderRouting r 
    JOIN OrderDet od ON r.JobNo = od.JobNo
    JOIN Orders o ON od.OrderNo = o.Orderno
WHERE r.Status = 'Current'
        AND r.WorkCntr IN ('Cutting', 'Framing', 'Assembly', 'Shipping')
GROUP BY CAST(r.OrderNo AS INT)

输出（错误！）：

而且：

SELECT 
    CAST(r.OrderNo AS INT) AS OrderNo,
        (
        SELECT 
            COUNT(r1.PartNo)
        FROM OrderRouting r1 JOIN OrderRouting r ON r1.OrderNo = r.OrderNo
        WHERE r1.Status = 'Current'
            AND r1.WorkCntr = 'Shipping'
        ) AS [Pcs Complete]
FROM OrderRouting r 
    JOIN OrderDet od ON r.JobNo = od.JobNo
    JOIN Orders o ON od.OrderNo = o.Orderno
WHERE r.Status = 'Current'
        AND r.WorkCntr IN ('Cutting', 'Framing', 'Assembly', 'Shipping')
GROUP BY CAST(r.OrderNo AS INT)

两者都没有奏效，他们都返回了1个全局应用的聚合，与外部查询中的OrderNo列无关。也许我需要尝试其他的东西，我只需要一些指导，了解什么是实现我需要的最佳方式。 Thx提前

Answer 1

我认为您可以使用左连接来显示所有现有订单号。

SELECT CAST(r.OrderNo AS INT) AS OrderNo,
    r2.[Pcs Complete]
FROM OrderRouting r 
JOIN OrderDet od ON r.JobNo = od.JobNo
JOIN Orders o ON od.OrderNo = o.Orderno
LEFT JOIN
    (
        SELECT CAST(r1.OrderNo AS INT) OrderNo,
            COUNT(r1.PartNo) AS [Pcs Complete]
        FROM OrderRouting r1
        WHERE r1.Status = 'Current'
            AND r1.WorkCntr = 'Shipping'
        GROUP BY r1.OrderNo
    ) AS [r2] ON r2.OrderNo = r.OrderNo
WHERE r.Status = 'Current'
AND r.WorkCntr IN ('Cutting', 'Framing', 'Assembly', 'Shipping')
GROUP BY CAST(r.OrderNo AS INT)

Answer 2

我并不完全清楚你要做什么，但我认为下面的代码会让你走上正确的道路：

SELECT 
    CAST(r.OrderNo AS INT) AS OrderNo
FROM OrderRouting r 
    JOIN OrderDet od ON r.JobNo = od.JobNo
    JOIN Orders o ON od.OrderNo = o.Orderno
    JOIN
    (
            SELECT r1.OrderNo,
            COUNT(r1.PartNo)
        FROM OrderRouting r1 JOIN OrderRouting r ON r1.OrderNo = r.OrderNo
        WHERE r1.Status = 'Current'
            AND r1.WorkCntr = 'Shipping'
    ) AS [PCsComplete] ON PcsComplete.OrderNo = r.OrderNo
WHERE r.Status = 'Current'
        AND r.WorkCntr IN ('Cutting', 'Framing', 'Assembly', 'Shipping')
GROUP BY CAST(r.OrderNo AS INT)

如何关联我的2个查询？

2 个答案: